DR. JOSEPH JAMES MERCHANT M.D.
NPI 1699765826
Internal Medicine - Hematology & Oncology in Ames, IA

Q: What is Joseph Merchant's NPI number?

The NPI number for Joseph Merchant is 1699765826. It was assigned to this individual provider in the NPPES registry on October 27, 2005.

Q: What is Joseph Merchant's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Joseph Merchant was last updated on November 16, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since October 27, 2005PECOS EnrolledAccepts Medicare Assignment

1111 DUFF AVE, AMES, IA 50010(515) 239-4401(515) 239-4791 Get Directions Write a Review

NPPES record last updated: November 16, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Joseph James Merchant M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOSEPH JAMES MERCHANT M.D. (NPI 1699765826) is an individual hematology & oncology provider in Ames, Iowa, licensed in Iowa (31094) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Unitypoint Health - Marshalltown, and is a graduate of University Of Iowa, Rj & L Carver College Of Medicine (1993).

NPPES Registry Identity

NPI1699765826

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameDR. JOSEPH JAMES MERCHANTCredential: M.D.

Location Address1111 DUFF AVEAmes, IA 50010-5793

Mailing Address1111 Duff AveAmes, IA 50010-5793 · (515) 239-4401 · Fax (515) 239-4791

Phone(515) 239-4401

Fax(515) 239-4791

Sole ProprietorNo

Medical School CMSUniversity Of Iowa, Rj & L Carver College Of MedicineGraduated 1993

Enumeration DateOctober 27, 2005

Last NPPES UpdateNovember 16, 2020

NPPES CertifiedNovember 16, 2020

✔ NPI 1699765826 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in IA · 31094

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

1111 DUFF AVE, Ames, IA 50010

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Other Identifiers 1

Medicaid1137380IA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Joseph James Merchant M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3173576238

PECOS Enrollment IDI20100215000127

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Joseph Merchant reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mcfarland Clinic PC

0.1 mi

Multi-Specialty

1215 DUFF AVENUE
Ames, IA 50010

Reassigned Medicare billing, Iowa enrollment
331 clinicians in this Medicare group

NPI 1639135643 (515) 239-4400

Dallas County Hospital

28 mi

Emergency Medicine

610 10TH ST
Perry, IA 50220

Reassigned Medicare billing, Iowa enrollment
Also billed through NPI 1669477089 (Iowa)
57 clinicians in this Medicare group

NPI 1861416307 (515) 465-3547

Greene County Medical Center

39 mi

Critical Access

1000 W LINCOLN WAY
Jefferson, IA 50129

Reassigned Medicare billing, Iowa enrollment
28 clinicians in this Medicare group

NPI 1083654883 (515) 386-2114

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 89

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, ferric carboxymaltose, 1 mg J1439

Ferric carboxymaltose is an iron supplement injection. It's given when your body needs more iron than you can consume through diet, like in anemia. The injection is administered by a healthcare professional into a vein.

30,750 services31 patients

Injection, darbepoetin alfa, 1 microgram (non-esrd use) J0881

Darbepoetin alfa injection is a medication used to treat anemia (low red blood cell count) often caused by chronic kidney disease or chemotherapy. It works by stimulating your body to produce more red blood cells, helping to increase your energy and well-being.

17,380 services16 patients

Injection, pembrolizumab, 1 mg J9271

Pembrolizumab is a medication given via injection to help your body's immune system fight certain types of cancer. It's typically administered in a hospital or clinic by a healthcare professional.

16,800 services24 patients

Injection, daratumumab, 10 mg and hyaluronidase-fihj J9144

Daratumumab and hyaluronidase-fihj is an injection administered to treat certain types of blood cancer. The medication works by targeting and killing specific cancer cells. It's often given under the skin to reduce side effects and improve patient comfort.

14,940 services13 patients

Injection, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

10,560 services37 patients

Injection, fosaprepitant, 1 mg J1453

Fosaprepitant is an anti-nausea medication given via injection. It's often used to prevent nausea and vomiting caused by chemotherapy. This injection blocks signals to the brain that trigger these symptoms, helping you feel better.

9,900 services23 patients

Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg J1561

This is an injection of immune globulin, specifically Gamunex-C or Gammaked. It's a liquid form, not freeze-dried. Immune globulin is a blood product that helps your immune system to fight infections. It's given in a dose of 500 mg.

5,380 services27 patients

Injection, paclitaxel, 1 mg J9267

Paclitaxel is a medication administered via injection to treat various types of cancer. It works by inhibiting cell division, thus preventing cancer cells from growing and multiplying. Each dose is tailored to the patient's body size.

4,764 services11 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

3,708 services76 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

2,054 services582 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

1,766 services577 patients

Injection, palonosetron hcl, 25 mcg J2469

Palonosetron HCL is an injection used to prevent nausea and vomiting caused by chemotherapy. It works by blocking a natural substance (serotonin) in the body that can cause vomiting. This helps improve your comfort during cancer treatment.

1,560 services46 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

1,345 services452 patients

Blood test, comprehensive group of blood chemicals 80053

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

1,319 services424 patients

Injection, gemcitabine hydrochloride, not otherwise specified, 200 mg J9201

Gemcitabine hydrochloride is a medication given via injection to treat certain types of cancer. The 200 mg dose is administered by a healthcare professional. The drug works by slowing or stopping the growth of cancer cells in the body. It's important to follow your doctor's instructions while receiving this treatment.

990 services16 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

673 services443 patients

Administration of chemotherapy into vein, 1 hour or less 96413

Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.

647 services123 patients

Injection, carboplatin, 50 mg J9045

Carboplatin is a chemotherapy drug used to treat various types of cancer by slowing or stopping the growth of cancer cells. The 50 mg injection is administered into a vein by a healthcare professional. Side effects may occur.

602 services20 patients

Magnesium level 83735

A magnesium level test is a simple blood test that measures the amount of magnesium in your body. Magnesium is a crucial mineral that helps your nerves, muscles, and heart function properly. The test can help detect health conditions like kidney disease or malnutrition.

591 services119 patients

Blood test, basic group of blood chemicals (calcium, total) 80048

A basic group blood test measures the levels of certain chemicals in your blood, including calcium. This helps assess your overall health and detect potential problems. The procedure involves drawing a small amount of blood from your arm, which is then analyzed in a lab.

570 services239 patients

Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less 96367

This procedure involves injecting fluids or medication directly into your vein. It's used for treatment, prevention, or diagnosis. An additional sequential infusion may be given within an hour if needed. This helps to ensure the medicine is distributed effectively in your body.

513 services95 patients

Injection, ondansetron hydrochloride, per 1 mg J2405

Ondansetron hydrochloride is a medication given via injection to help prevent nausea and vomiting, often due to chemotherapy or surgery. It works by blocking certain chemicals in the body that trigger these symptoms.

498 services22 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

465 services109 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

308 services131 patients

Ferritin (blood protein) level 82728

A Ferritin level test measures the amount of ferritin, a protein that stores iron, in your blood. It helps determine how much iron your body is storing. If levels are low, it may indicate iron deficiency, while high levels could signify conditions like iron overload.

293 services192 patients

Lactate dehydrogenase (enzyme) level 83615

A Lactate Dehydrogenase level test measures the amount of this enzyme in your body. It's often done when tissue damage is suspected, as high levels can indicate issues like heart disease, lung disease, liver disease, or blood disorders. This test helps in diagnosing and monitoring these conditions.

264 services147 patients

Iron level 83540

An iron level test measures the amount of iron in your blood. Iron is crucial for producing hemoglobin, a protein in red blood cells that carries oxygen throughout your body. This test helps identify iron deficiencies or excesses, which can lead to conditions like anemia or hemochromatosis.

259 services180 patients

Iron binding capacity 83550

Iron binding capacity is a blood test that measures how well your body can bind and transport iron. This helps your healthcare provider assess if your body has too little or too much iron, which can indicate certain health conditions.

259 services180 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

255 services82 patients

Injection, zoledronic acid, 1 mg J3489

Zoledronic acid is a medication given via injection to strengthen bones. It's often used in patients with osteoporosis or certain types of cancer. The injection helps reduce the risk of fractures and other bone complications.

243 services32 patients

Injection, magnesium sulfate, per 500 mg J3475

Magnesium sulfate injection, per 500 mg, is a medication administered to manage certain health conditions. It aids in controlling seizures in conditions like eclampsia and in managing severe asthma attacks. It's also used to prevent premature labor in pregnant women.

238 services25 patients

Blood test, thyroid stimulating hormone (tsh) 84443

A TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.

226 services81 patients

Protein measurement, serum 84165

A serum protein measurement is a blood test that determines the levels of proteins in your blood. It is used to evaluate your overall health, and diagnose nutritional problems, kidney disease, liver disease, or immune disorders.

183 services78 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

181 services123 patients

Injection of additional new drug or substance into vein 96375

This procedure involves introducing a new medication or substance into your bloodstream via a vein. It's typically done using a small needle. The substance can help treat various conditions or assist in diagnostic procedures. It's generally safe and monitored by professionals.

173 services51 patients

Administration of additional new drug or substance into vein, 1 hour or less 96417

This procedure involves introducing a new drug or substance into your vein, typically via an IV drip. It lasts for an hour or less. This method allows the substance to quickly reach your bloodstream, ensuring rapid and effective treatment.

172 services43 patients

Thyroxine (thyroid chemical), free 84439

The Thyroxine (thyroid chemical), free test is a blood test that measures the level of free T4 in your body. T4 is a hormone produced by your thyroid gland and is essential for growth and metabolism. If your T4 levels are too high or too low, it could indicate a thyroid disorder.

162 services51 patients

Administration of chemotherapy into vein, each additional hour 96415

Chemotherapy is a treatment method that uses drugs to destroy cancer cells. The drugs are administered into a vein, usually in the arm. Each additional hour of chemotherapy allows for more of the medication to enter your bloodstream to fight against the cancer cells.

155 services34 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

152 services73 patients

Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg J3420

This is a procedure where a small dose of Vitamin B-12, also known as Cyanocobalamin, is injected into your body. This vitamin is essential for nerve function and the production of red blood cells. It's often used to treat vitamin B-12 deficiency.

145 services27 patients

Leuprolide acetate (for depot suspension), 7.5 mg J9217

Leuprolide acetate is a medication that helps regulate certain hormone levels in your body. It's injected into your muscle once a month. This treatment can help manage various health conditions related to hormone imbalance. Always follow your doctor's instructions.

133 services15 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test 85027

A complete blood cell count (CBC) is an automated test that measures different components of the blood, including red cells, white cells, and platelets. It helps assess overall health, detect disorders like anemia or infection, and monitor medical treatments.

131 services39 patients

Cyanocobalamin (vitamin b-12) level 82607

A Cyanocobalamin (Vitamin B-12) level test is a blood test that checks the amount of Vitamin B-12 in your body. This vitamin is vital for nerve function and the creation of red blood cells. Low or high levels could indicate a potential health issue.

120 services110 patients

Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle 96401

This procedure involves giving anti-cancer drugs, which don't contain hormones, into the muscle or under the skin. These drugs help to stop the growth of cancer cells. The process is usually quick and done by a healthcare professional.

113 services17 patients

Carcinoembryonic antigen (cea) protein level 82378

Carcinoembryonic Antigen (CEA) protein level is a blood test often used in cancer care. It measures the amount of CEA protein in your blood, which can increase in cases of certain types of cancer. It's used to monitor treatment progress and check for cancer recurrence.

111 services36 patients

Total protein level, blood 84155

A total protein level blood test measures the amount of proteins in your blood. Proteins are essential for body functions, including immune response, tissue repair, and nutrient transportation. Abnormal levels may indicate certain diseases or conditions. It's a simple test involving a blood draw.

111 services59 patients

Infusion into a vein for therapy, prevention, or diagnosis, each additional hour 96366

This procedure involves delivering medication, fluids, or nutrients directly into your vein. This is done to treat, prevent, or diagnose various conditions. Each additional hour refers to the extended time you may need to receive these substances for optimal results.

110 services34 patients

Folic acid level, serum 82746

A Folic Acid Level, Serum test measures the amount of folic acid, a type of B vitamin, in your blood. This vitamin is important for cell growth and development. It's crucial for your body to function well. If your levels are low, it may indicate a deficiency, which can lead to health issues.

102 services99 patients

Psa (prostate specific antigen) measurement, total 84153

PSA measurement is a simple blood test that checks for a specific protein produced by your body. High levels could indicate a health issue that needs further investigation. It's often used to monitor general wellness and is part of routine health screening.

97 services39 patients

Microscopic examination for white blood cells with manual cell count 85007

This is a lab test where a small sample of your blood is studied under a microscope. The goal is to count the number of white blood cells, which are crucial for your body's immune response. The count can help identify potential health issues.

88 services38 patients

Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle 96402

This procedure involves the injection of hormone-based anti-cancer drugs under the skin or into a muscle. These medications help to slow down or stop the growth of certain types of cancer cells. The process is usually quick and can be performed in a clinic or hospital.

87 services23 patients

Hospital discharge day management, 30 minutes or less 99238

Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.

82 services66 patients

Injection, diphenhydramine hcl, up to 50 mg J1200

Diphenhydramine HCL injection is a medicine given to alleviate symptoms of allergies, colds, or hay fever. It can also help with motion sickness and certain symptoms of Parkinson's disease. Up to 50 mg may be administered depending on your condition.

82 services36 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

72 services72 patients

Red blood cell concentration measurement 85014

Red blood cell concentration measurement is a routine blood test that assesses the number of red blood cells in your blood. These cells carry oxygen throughout your body. The test can help identify conditions like anemia or dehydration. It's a simple, quick, and relatively painless procedure.

71 services15 patients

Blood count, hemoglobin 85018

A blood count, specifically hemoglobin, is a standard test that measures the amount of hemoglobin in your blood. Hemoglobin is a protein in red blood cells that carries oxygen throughout your body. This test helps assess your overall health and detect a variety of disorders such as anemia or polycythemia.

71 services15 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

65 services65 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

55 services55 patients

Blood test, clotting time 85610

A clotting time blood test helps determine how quickly your blood forms clots, a process crucial to stop bleeding. During the test, a small blood sample is taken from your arm. The sample is then analyzed in a lab to see how long it takes for a clot to form.

50 services28 patients

Administration of additional new drug or substance into vein using push technique 96411

This procedure involves injecting a new medication or substance directly into your vein using a method called the 'push' technique. It's a quick way to deliver medication into your bloodstream for fast-acting relief or treatment.

48 services12 patients

Infusion into a vein for hydration, 31-60 minutes 96360

This is a procedure where a sterile solution is administered into your vein to help restore body fluid balance. It typically lasts between 31-60 minutes. It's a safe, common treatment for dehydration or to deliver medication.

45 services25 patients

Infusion, normal saline solution , 1000 cc J7030

An infusion of normal saline solution, 1000 cc, is a common medical procedure. It involves introducing a saltwater solution into your bloodstream via an intravenous (IV) line. This helps to hydrate your body, correct electrolyte imbalances, and deliver medications if needed.

45 services25 patients

Unclassified drugs J3490

Unclassified drugs are medications that don't fit into an existing category or class due to their unique properties or uses. They may be used for various conditions and their effects may differ widely. Always ask your healthcare provider for more information about these drugs.

42 services19 patients

Irrigation of implanted venous access drug delivery device 96523

Irrigation of an implanted venous access drug delivery device is a procedure to clean or unblock the device. This device is implanted under your skin to allow easy, frequent, and long-term access to your veins for medication delivery. The process involves flushing the device with a sterile solution to ensure it works properly.

41 services22 patients

Blood test, basic group of blood chemicals (calcium, ionized) 80047

A basic group of blood chemicals test, including calcium and ionized, is a simple procedure where a small amount of blood is drawn from your arm. This test helps assess your body's overall health and detect potential disorders like kidney disease or bone disease.

39 services24 patients

Red blood count, automated test 85045

An automated red blood count test is a routine lab procedure to measure the number of red blood cells in your blood. These cells carry oxygen throughout the body. The test helps assess overall health and detect conditions like anemia or polycythemia.

37 services29 patients

Injection, alteplase recombinant, 1 mg J2997

Alteplase recombinant is a medication given by injection. It's a clot-busting drug used to treat conditions like strokes or heart attacks by dissolving blood clots that block blood flow. The dose is typically 1 mg. It's crucial to administer it quickly after symptoms appear.

36 services13 patients

Total protein level, urine 84156

The Total Protein Level in urine test measures the amount of protein present in your urine. This helps to check kidney health as high levels may indicate a problem. It's a simple, non-invasive procedure involving a urine sample.

33 services21 patients

Uric acid level, blood 84550

A blood uric acid level test measures the amount of uric acid in your blood. Uric acid is a waste product that your body produces when it breaks down purines, substances found in your body and in certain foods. High levels may lead to gout or kidney stones.

33 services22 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

33 services20 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

31 services31 patients

Liver function blood test panel 80076

A liver function blood test panel helps check the health of your liver. It measures various proteins, liver enzymes, and bilirubin in your blood. If these levels are too high or too low, it could signal a liver problem. It's a simple, non-invasive test that involves drawing blood.

29 services18 patients

Creatinine level to test for kidney function or muscle injury 82570

A creatinine level test measures the amount of creatinine in your blood. This substance is a waste product from normal muscle use. Higher levels can indicate possible kidney dysfunction or muscle injury. This test helps monitor kidney health.

27 services13 patients

Hepatitis b surface antibody measurement 86706

Hepatitis B surface antibody measurement is a blood test done to check if your body has developed immunity against the Hepatitis B virus. It's typically done after vaccination or to confirm recovery from a past infection. It's a simple, safe procedure.

27 services26 patients

Detection test by immunoassay technique for hepatitis b surface antigen 87340

This test helps identify the presence of hepatitis B in your body. It uses an immunoassay technique, which is a highly sensitive method that detects the hepatitis B surface antigen, a protein on the virus. This test can help diagnose an active infection or determine if you're a carrier.

27 services26 patients

Manual urinalysis test with examination using microscope, automated 81001

A manual urinalysis test with automated microscopic examination is a lab process that checks your urine for health indicators. It involves a machine scanning your sample to identify any abnormal elements, which can assist in diagnosing various conditions.

25 services16 patients

Stool analysis for blood, by fecal hemoglobin determination by immunoassay 82274

A stool analysis for blood, or fecal hemoglobin determination by immunoassay, is a test that checks for hidden blood in your stool. This test helps identify potential issues in your digestive system. It involves collecting a small stool sample which is then analyzed in a lab for the presence of blood.

25 services23 patients

Phosphate level 84100

A phosphate level test measures the amount of phosphate in your blood. Phosphate is a chemical that contains the mineral phosphorus, crucial for energy production, muscle and nerve function, and bone growth. Imbalances may indicate kidney disease or other health issues.

25 services11 patients

Biopsy and aspiration of bone marrow sample for diagnosis 38222

A bone marrow biopsy and aspiration is a procedure where a small amount of bone marrow is removed for testing. It involves inserting a needle into a bone, typically the hip, to collect a sample. It can help diagnose various diseases and monitor treatment effectiveness.

20 services16 patients

Red blood cell antibody detection test, direct 86880

A direct red blood cell antibody detection test is a lab procedure that checks your blood for antibodies that may harm red blood cells. It's crucial in identifying conditions that can cause anemia or complications in blood transfusions.

20 services18 patients

Bacterial colony count, urine 87086

A bacterial colony count, urine, is a laboratory test that checks a urine sample for bacteria. It helps to identify if an infection is present in the urinary system. High numbers of bacteria in the urine can indicate a urinary tract infection (UTI).

19 services14 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

19 services18 patients

Declotting of central venous tube 36593

Declotting of a central venous tube is a procedure to remove blockages caused by blood clots in your central venous tube. This tube is used to deliver medications or nutrients directly into your bloodstream. The process ensures the smooth functioning of your tube.

18 services13 patients

Immunologic analysis technique on serum (immunofixation) 86334

Immunofixation is a lab test that helps identify proteins called immunoglobulins in your blood serum. These proteins are part of your immune system. Changes in their levels can indicate certain diseases. The test is simple and only requires a blood sample.

17 services13 patients

Testosterone (hormone) level, total 84403

A total testosterone level test measures the amount of a key hormone in your body. This hormone influences various body functions such as muscle mass, energy levels, and mood. The test involves a simple blood draw, and results help monitor health conditions.

14 services12 patients

Immunologic analysis technique on body fluid, other fluids with concentration 86335

Immunologic analysis is a diagnostic method that assesses your body fluids to detect health issues. It involves concentrating these fluids to enhance detection of specific proteins or cells. It helps identify immune system responses, aiding in accurate diagnosis and treatment.

13 services12 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

12 services11 patients

Hepatitis c antibody measurement 86803

Hepatitis C antibody measurement is a blood test to check if you have been exposed to the Hepatitis C virus. This virus affects your liver. If the test is positive, it means you have had the virus at some point. Additional tests are needed to determine if the virus is currently active.

12 services11 patients

Transitional care management services for problem of at least moderate complexity 99495

Transitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Unitypoint Health - Marshalltown

Acute Care Hospitals · Marshalltown, IA

OwnershipVoluntary non-profit - Private

CMS Certification Number160001

Location55 Unitypoint WayMarshalltown, IA 50158 · Marshall County

Emergency services

Mary Greeley Medical Center

Acute Care Hospitals · Ames, IA

4/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number160030

Location1111 Duff AvenueAmes, IA 50010 · Story County

Emergency services Birthing friendly

Dallas County Hospital

Critical Access Hospitals · Perry, IA

OwnershipGovernment - Local

CMS Certification Number161322

Location610 Tenth StreetPerry, IA 50220 · Dallas County

Emergency services

Greene County Medical Center

Critical Access Hospitals · Jefferson, IA

OwnershipGovernment - Local

CMS Certification Number161325

Location1000 West Lincoln WayJefferson, IA 50129 · Greene County

Emergency services

Boone County Hospital

Critical Access Hospitals · Boone, IA

OwnershipGovernment - Local

CMS Certification Number161372

Location1015 Union StreetBoone, IA 50036 · Boone County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50010 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$161.40 typical visit price

range $52.96 – $161.40

Typical copayment $40.35 (range $13.24 – $40.35)

Most-billed visit code 99205

Established Patient

$94.05 typical visit price

range $16.91 – $131.98

Typical copayment $23.51 (range $4.22 – $32.99)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 8

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier11 claims11 services$19.60 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

6 suppliers65 claims65 services$105.79 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

3 suppliers26 claims26 services$33.69 avg. paid by Medicare

Capecitabine, oral, 500 mg J8521

Treatment-Treatment - Miscellaneous · category RX029N

2 suppliers38 claims2,806 services$0.67 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

2 suppliers28 claims28 services$196.84 avg. paid by Medicare

Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738

DME-Oxygen and Supplies · category DC000N

2 suppliers13 claims13 services$35.29 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. THOMAS M WERNIMONT MD

Emergency Medicine

1111 DUFF AVE
AMES, IA 50010

Story County (515) 239-2155

RYAN ELSEY DO

Hospitalist

1111 DUFF AVE
AMES, IA 50010

Story County (515) 239-6992

JEFFREY A. DRAWBOND MD

Anesthesiology

1111 DUFF AVE
AMES, IA 50010

Story County (515) 239-2182

DR. AUSTIN GRECO M.D.

Internal Medicine (Hematology & Oncology)

1111 DUFF AVE
AMES, IA 50010

Story County (515) 239-4401

MS. CHERI LYNN THIELEKE PA-C

Physician Assistant

1111 DUFF AVE
AMES, IA 50010

Story County (515) 239-2155

MS. SARAH LINNEA HAVEMAN RD, CDE

Dietitian, Registered

1111 DUFF AVE
AMES, IA 50010

Story County (515) 956-2882

TRAVIS L. MATTSON MD

Emergency Medicine

1111 DUFF AVE, MCFARLAND CLINIC PC
AMES, IA 50010

Story County (515) 239-2155

DR. LYMAN SHANE HOPKINS MD

Radiology (Radiation Oncology)

1111 DUFF AVE
AMES, IA 50010

Story County (515) 239-2411

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Joseph Merchant's NPI number?

The NPI number for Joseph Merchant is 1699765826. It was assigned to this individual provider in the NPPES registry on October 27, 2005.

Where is Joseph Merchant located?

Joseph Merchant practices at 1111 Duff Ave, Ames, IA 50010. The listed phone number is (515) 239-4401.

What is Joseph Merchant's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Joseph Merchant enrolled in Medicare?

Yes. Joseph Merchant is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Joseph Merchant's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Merchant reassigns Medicare benefits to 3 organizations: Mcfarland Clinic PC (Ames, IA), Dallas County Hospital (Perry, IA) and Greene County Medical Center (Jefferson, IA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joseph Merchant's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Joseph Merchant accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Wellmark Health Plan of Iowa, Inc. list Joseph Merchant as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Joseph Merchant affiliated with any hospitals?

According to CMS data, Joseph Merchant is affiliated with Unitypoint Health - Marshalltown, Mary Greeley Medical Center, Dallas County Hospital, Greene County Medical Center and Boone County Hospital.

When was this NPI record last updated?

The NPPES record for Joseph Merchant was last updated on November 16, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.