ZHENGJIN CAO M.D.
NPI 1861616039
Internal Medicine in Dubuque, IA

Q: What is Zhengjin Cao's NPI number?

The NPI number for Zhengjin Cao is 1861616039. It was assigned to this individual provider in the NPPES registry on April 12, 2007.

Q: What is Zhengjin Cao's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Zhengjin Cao was last updated on April 6, 2021. 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 April 12, 2007PECOS EnrolledAccepts Medicare Assignment

1515 DELHI ST, STE 100, DUBUQUE, IA 52001(563) 557-9111(563) 589-4046 Get Directions Write a Review

NPPES record last updated: April 6, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Zhengjin Cao M.d. NPPES

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

ZHENGJIN CAO M.D. (NPI 1861616039) is an individual internal medicine provider in Dubuque, Iowa, licensed in Iowa (37147) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS, is affiliated with Midwest Medical Center, and is a graduate of Other (1988).

NPPES Registry Identity

NPI1861616039

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameZHENGJIN CAOCredential: M.D.

Location Address1515 DELHI ST, STE 100Dubuque, IA 52001-6320

Mailing Address1515 Delhi St, Ste 100Dubuque, IA 52001-6320 · (563) 557-9111 · Fax (563) 589-4046

Phone(563) 557-9111

Fax(563) 589-4046

Sole ProprietorNo

Medical School CMSOtherGraduated 1988

Enumeration DateApril 12, 2007

Last NPPES UpdateApril 6, 2021

NPPES CertifiedApril 6, 2021

✔ NPI 1861616039 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in IA · 37147

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1515 DELHI ST, Dubuque, IA 52001

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Other Identifiers 1

Medicaid34793200WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Anthem Blue Cross and Blue Shield 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

Zhengjin Cao 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 ID9537269154

PECOS Enrollment IDI20070713000276

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 Reassignment

Medicare enrollment records show Zhengjin Cao reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Iowa Physicians Clinic Medical Foundation

76 mi

General Practice

1518 MULBERRY AVENUE
Muscatine, IA 52761

Reassigned Medicare billing, Iowa enrollment
1,506 clinicians in this Medicare group

NPI 1982831426 (515) 471-9300

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 44

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.

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.

559 services289 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.

541 services284 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.

435 services278 patients

Liver enzyme (sgpt), level 84460

A liver enzyme (SGPT) level test is a blood test that checks the health of your liver. SGPT is an enzyme found in your liver cells. If your liver is damaged or inflamed, SGPT can leak into your bloodstream, raising the enzyme level. This test helps identify liver diseases early.

346 services248 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

280 services198 patients

Blood test, lipids (cholesterol and triglycerides) 80061

A lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.

238 services232 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

230 services230 patients

Annual depression screening, 5 to 15 minutes G0444

An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.

211 services211 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.

191 services147 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.

190 services151 patients

Natriuretic peptide (heart and blood vessel protein) level 83880

A natriuretic peptide level test is a blood test that helps doctors check for heart failure. It measures the amount of certain proteins that your heart and blood vessels produce when they are under stress. High levels may indicate heart disease.

152 services105 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.

140 services112 patients

Ldl cholesterol level 83721

The LDL cholesterol level is a test that measures the amount of low-density lipoprotein (LDL) in your blood. LDL is often referred to as 'bad cholesterol' because high levels can lead to heart disease. Regular testing helps monitor and manage your heart health.

127 services117 patients

Anticoagulant management of patient taking warfarin 93793

Anticoagulant management with warfarin involves monitoring and adjusting your medication to prevent blood clots while minimizing the risk of bleeding. Regular blood tests measure your response to warfarin, helping adjust your dose if necessary. It's crucial to maintain a consistent diet and promptly report any changes in your health.

119 services29 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.

100 services20 patients

Prostate cancer screening; prostate specific antigen test (psa) G0103

Prostate cancer screening involves a simple blood test known as the Prostate Specific Antigen (PSA) test. This test measures the level of PSA in your blood. Higher than normal levels can be an early indication of prostate issues, including cancer. It's a key tool in early detection.

82 services82 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.

76 services76 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.

71 services57 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.

69 services69 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.

60 services57 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.

55 services49 patients

Screening 3d breast mammography 77063

Screening 3D breast mammography is a procedure that uses low-dose X-rays to create detailed images of the breast. This allows for early detection of any unusual changes or growths. It's a non-invasive, outpatient procedure that typically takes about 30 minutes.

53 services53 patients

Screening mammography 77067

Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.

53 services53 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.

48 services40 patients

Vitamin d-3 level 82306

A Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.

45 services45 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.

43 services42 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.

38 services28 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.

37 services34 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.

35 services33 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.

28 services22 patients

Urine microalbumin (protein) level 82043

The urine microalbumin level test measures the amount of a protein called albumin in your urine. This test helps to detect early signs of kidney damage. High levels of albumin may suggest your kidneys aren't functioning properly. It's a simple, non-invasive test that involves providing a urine sample.

25 services25 patients

Removal of impacted ear wax by washing 69209

Impacted ear wax removal by washing, also known as ear irrigation, involves using a pressurized flow of water to break up and dislodge the ear wax. This safe procedure helps restore normal hearing and relieve discomfort caused by the blockage.

22 services21 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.

22 services20 patients

Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment G0402

An Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.

22 services22 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.

21 services15 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677

The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.

20 services20 patients

Administration of pneumococcal vaccine G0009

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

20 services20 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.

18 services18 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

18 services18 patients

Low dose ct scan of chest for lung cancer screening 71271

A low-dose CT scan of the chest is a quick, painless procedure that uses a small amount of radiation to create detailed images of your lungs. It's a key tool for early detection of lung cancer, especially for those at high risk.

17 services17 patients

Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211

This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.

17 services12 patients

Measurement c-reactive protein for detection of infection or inflammation 86140

C-reactive protein (CRP) test is a blood test that checks for signs of inflammation or infection in the body. High levels of CRP often suggest that there's inflammation or a bacterial infection. This test helps in monitoring and managing conditions like arthritis and heart disease.

15 services12 patients

Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit G0438

An annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.

13 services13 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

12 services12 patients

Hospital Affiliations CMS Care Compare 3

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

Midwest Medical Center

Critical Access Hospitals · Galena, IL

OwnershipVoluntary non-profit - Private

CMS Certification Number141302

Location1 Medical Center DriveGalena, IL 61036 · Jo Daviess County

Emergency services

Mercyone Dubuque Medical Center

Acute Care Hospitals · Dubuque, IA

5/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number160069

Location250 Mercy DriveDubuque, IA 52001 · Dubuque County

Emergency services Birthing friendly

Finley Hospital

Acute Care Hospitals · Dubuque, IA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number160117

Location350 North Grandview AvenueDubuque, IA 52001 · Dubuque County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 52001 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

$122.23 typical visit price

range $52.96 – $161.40

Typical copayment $30.55 (range $13.24 – $40.35)

Most-billed visit code 99204

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 22

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

14 suppliers70 claims174 services$5.25 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

9 suppliers32 claims40 services$0.99 avg. paid by Medicare

Tubing with integrated heating element for use with positive airway pressure device A4604

DME-Other DME · category DE001N

3 suppliers16 claims16 services$37.32 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

4 suppliers14 claims14 services$98.43 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

3 suppliers12 claims23 services$38.37 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

8 suppliers19 claims19 services$54.50 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

8 suppliers28 claims28 services$19.17 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

6 suppliers12 claims12 services$15.75 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

8 suppliers34 claims129 services$2.26 avg. paid by Medicare

Enteral feeding supply kit; pump fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4035

Other-Enteral and Parenteral · category OB006N

1 supplier11 claims314 services$6.01 avg. paid by Medicare

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

DME-Oxygen and Supplies · category DC000N

3 suppliers21 claims25 services$17.18 avg. paid by Medicare

Respiratory assist device, bi-level pressure capability, without backup rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device) E0470

DME-Other DME · category DE001N

1 supplier11 claims11 services$119.85 avg. paid by Medicare

Humidifier, heated, used with positive airway pressure device E0562

DME-Other DME · category DE001N

2 suppliers23 claims23 services$16.23 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

2 suppliers15 claims19 services$5.38 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

4 suppliers35 claims35 services$35.30 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

3 suppliers72 claims78 services$87.10 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

1 supplier40 claims40 services$32.31 avg. paid by Medicare

Levalbuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 0.5 mg J7614

DME-Drugs Administered Through DME · category DG006N

1 supplier19 claims2,366 services$0.03 avg. paid by Medicare

Standard wheelchair K0001

DME-Wheelchairs · category DD000N

3 suppliers15 claims16 services$23.81 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

4 suppliers17 claims17 services$182.91 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 suppliers19 claims19 services$34.77 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

8 suppliers18 claims18 services$17.32 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.

CYNTHIA J. KONZ M.D.

Internal Medicine

1515 DELHI ST, STE 100
DUBUQUE, IA 52001

Dubuque County (563) 557-9111

DR. ALEXANDER P JOHNSON M.D.

Hospitalist

1515 DELHI ST, SUITE 100
DUBUQUE, IA 52001

Dubuque County (563) 557-9111

KRISTIN ELIZABETH NELSON M.D.

Internal Medicine

1515 DELHI ST, STE 100
DUBUQUE, IA 52001

Dubuque County (563) 557-9111

BENJAMIN KUMOR M.D.

Family Medicine (Adult Medicine)

1515 DELHI ST, SUITE 100
DUBUQUE, IA 52001

Dubuque County (563) 557-9111

ALLEN GERARD MEURER M.D.

Internal Medicine

1515 DELHI ST, STE 100
DUBUQUE, IA 52001

Dubuque County (563) 557-9111

BRETT MAAG

Nurse Anesthetist, Certified Registered

1515 DELHI ST, SUITE 300
DUBUQUE, IA 52001

Dubuque County (563) 557-5991

MARK O LIABOE M.D.

Internal Medicine

1515 DELHI ST, STE 100
DUBUQUE, IA 52001

Dubuque County (563) 557-9111

BRIAN DOUGLAS MORAN M.D.

Internal Medicine

1515 DELHI ST, STE 100
DUBUQUE, IA 52001

Dubuque County (563) 557-9111

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 Zhengjin Cao's NPI number?

The NPI number for Zhengjin Cao is 1861616039. It was assigned to this individual provider in the NPPES registry on April 12, 2007.

Where is Zhengjin Cao located?

Zhengjin Cao practices at 1515 Delhi St Ste 100, Dubuque, IA 52001. The listed phone number is (563) 557-9111.

What is Zhengjin Cao's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Zhengjin Cao enrolled in Medicare?

Yes. Zhengjin Cao 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 organization bills Medicare for Zhengjin Cao's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Zhengjin Cao reassigns Medicare benefits to Iowa Physicians Clinic Medical Foundation (Muscatine, IA). The 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 Zhengjin Cao's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Zhengjin Cao accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Anthem Blue Cross and Blue Shield, Dean Health Plan and Oscar Insurance Company and 2 other insurers list Zhengjin Cao 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 Zhengjin Cao affiliated with any hospitals?

According to CMS data, Zhengjin Cao is affiliated with Midwest Medical Center, Mercyone Dubuque Medical Center and Finley Hospital.

When was this NPI record last updated?

The NPPES record for Zhengjin Cao was last updated on April 6, 2021. 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.