DR. MATTHEW HERBERT ORNSTEIN M.D.
NPI 1598737066
Internal Medicine - Rheumatology in Carmel, NY

Q: What is Matthew Ornstein's NPI number?

The NPI number for Matthew Ornstein is 1598737066. It was assigned to this individual provider in the NPPES registry on February 7, 2006.

Q: What is Matthew Ornstein's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Q: When was this NPI record last updated?

The NPPES record for Matthew Ornstein was last updated on November 18, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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 February 07, 2006PECOS EnrolledAccepts Medicare Assignment

672 STONELEIGH AVE, CAREMOUNT MEDICAL PC, CARMEL, NY 10512(845) 231-5600(845) 231-5489 Get Directions Write a Review

NPPES record last updated: November 18, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 18, 2016, Aug 11, 2016, Feb 9, 2016 (3 updates tracked since 2016).

On this page

About Dr. Matthew Herbert Ornstein M.d. NPPES

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

DR. MATTHEW HERBERT ORNSTEIN M.D. (NPI 1598737066) is an individual rheumatology provider in Carmel, New York, licensed in New York (179957-1) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and is a graduate of State University Of New York At Stony Brook, School Of Medicine (1988).

NPPES Registry Identity

NPI1598737066

Entity TypeIndividualMale

Primary Taxonomy207RR0500X

Provider Legal NameDR. MATTHEW HERBERT ORNSTEINCredential: M.D.

Location Address672 STONELEIGH AVE, CAREMOUNT MEDICAL PCCarmel, NY 10512-4634

Mailing Address110 S Bedford Rd, Caremount Medical PcMount Kisco, NY 10549-3446 · (914) 241-1050 · Fax (914) 242-1516

Phone(845) 231-5600

Fax(845) 231-5489

Sole ProprietorNo

Medical School CMSState University Of New York At Stony Brook, School Of MedicineGraduated 1988

Enumeration DateFebruary 7, 2006

Last NPPES UpdateNovember 18, 20163 updates tracked since enumeration

✔ NPI 1598737066 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RR0500X

License✔ Licensed in NY · 179957-1

Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

672 STONELEIGH AVE, Carmel, NY 10512

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Other Identifiers 2

Medicare PINA400106931NY

Medicaid01415127NY

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. Matthew Herbert Ornstein 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 ID2264494681

PECOS Enrollment IDI20041028000645

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 Matthew Ornstein reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Optum Medical Care, P.C.

13 mi

Cardiovascular Disease

90 SOUTH BEDFORD RD, MT KISCO MEDICAL GROUP PC
Mount Kisco, NY 10549

Reassigned Medicare billing, New York enrollment
Medicare enrollment name: Optum Medical Care PC
1,601 clinicians in this Medicare group

NPI 1982643003 (914) 241-1050

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 33

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, 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.

1,320 services12 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.

717 services319 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.

567 services266 patients

Red blood cell sedimentation rate, to detect inflammation, automated 85652

The Red Blood Cell Sedimentation Rate is a test that helps detect inflammation in the body. It's automated, meaning a machine does the work. This test measures how fast red blood cells settle at the bottom of a tube in an hour. A faster rate may indicate inflammation.

424 services241 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.

363 services219 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.

352 services203 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.

351 services205 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.

131 services95 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.

113 services90 patients

Rheumatoid factor level 86431

The Rheumatoid Factor Level test is a blood test that helps detect the presence of Rheumatoid Factor (RF), a protein produced by your immune system. High RF levels often indicate autoimmune diseases like rheumatoid arthritis. The test involves a simple blood draw and lab analysis.

108 services99 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

101 services43 patients

Analysis for antibody borrelia burgdorferi (lyme disease bacteria) 86618

This test checks for antibodies in your blood that your body may produce in response to Borrelia burgdorferi, the bacteria causing Lyme disease. It helps confirm if you've been infected by a tick carrying this bacteria.

98 services92 patients

Injection of trigger points, 1-2 muscles 20552

Trigger point injection is a procedure used to treat painful areas of muscle that contain trigger points, or knots of muscle that form when muscles do not relax. 1-2 muscles are typically treated in one session. The procedure involves injecting medications into these points to alleviate pain.

91 services68 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.

87 services30 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.

41 services28 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.

39 services33 patients

Hepatitis b core antibody measurement 86704

Hepatitis B core antibody measurement is a test conducted to determine if you have been infected with the Hepatitis B virus in the past. It involves taking a blood sample and analyzing it in a lab. This test aids in diagnosing and managing Hepatitis B infections.

37 services32 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.

37 services32 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.

37 services32 patients

Measurement of hepatitis a antibody 86708

The measurement of Hepatitis A antibody is a simple blood test. It helps determine if you have had a past infection or vaccination against Hepatitis A, a viral liver disease. The test can provide valuable information for your healthcare management.

36 services32 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.

36 services32 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.

36 services36 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.

33 services29 patients

Creatine kinase (cardiac enzyme) level, total 82550

The total Creatine Kinase (CK) level test is a blood test that helps assess the health of your heart. It measures an enzyme called CK that's released into the bloodstream when heart or other muscle tissue is damaged. High levels may indicate a heart attack or muscle disorder.

30 services28 patients

Injection, methylprednisolone acetate, 80 mg J1040

Methylprednisolone acetate is a strong anti-inflammatory medication. It is often given as an 80 mg injection to reduce inflammation and pain. It's commonly used for conditions like arthritis, allergic disorders, or other inflammatory diseases.

29 services29 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.

22 services22 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

21 services21 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.

18 services16 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.

14 services14 patients

Measurement of hepatitis a antibody (igm) 86709

The measurement of hepatitis A antibody (IgM) is a blood test performed to detect a recent or ongoing Hepatitis A infection. It works by identifying the presence of specific antibodies, which are proteins produced by the body to fight off the virus.

14 services11 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).

13 services12 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.

13 services13 patients

Injection, methylprednisolone acetate, 40 mg J1030

Methylprednisolone acetate is a medication given through an injection. It's a type of corticosteroid, which reduces inflammation and immune responses. It can be used to treat various conditions like arthritis, allergies, and skin diseases. This dose is 40 mg.

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10512 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

$141.77 typical visit price

range $61.88 – $187.05

Typical copayment $35.44 (range $15.47 – $46.76)

Most-billed visit code 99204

Established Patient

$108.56 typical visit price

range $19.92 – $151.94

Typical copayment $27.14 (range $4.98 – $37.98)

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.

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. IRA ALAN SCHWARTZ M.D.

Internal Medicine (Cardiovascular Disease)

672 STONELEIGH AVE, SUITE C112
CARMEL, NY 10512

Putnam County (845) 279-2900

ANDREW S GUTTERMAN M.D.

Dermatology

672 STONELEIGH AVE
CARMEL, NY 10512

Putnam County (845) 279-2000

GEORGIA MOLLY CLOSE M.D.

Internal Medicine (Gastroenterology)

672 STONELEIGH AVE
CARMEL, NY 10512

Putnam County (845) 279-2000

STONELEIGH MEDI-SPA, INC.

Clinic/Center (Radiology, Mobile)

672 STONELEIGH AVE, STE C-126
CARMEL, NY 10512

Putnam County (845) 225-5300

DR. KISHORE N RANADE MD

Psychiatry & Neurology (Neurology)

672 STONELEIGH AVE
CARMEL, NY 10512

Putnam County (845) 279-9000

GLENN HOWARD BOYAR M.D.

Internal Medicine (Cardiovascular Disease)

672 STONELEIGH AVE
CARMEL, NY 10512

Putnam County (845) 279-2000

IRA A. SCHWARTZ, M.D., P.C.

Internal Medicine (Cardiovascular Disease)

672 STONELEIGH AVE, SUITE C112
CARMEL, NY 10512

Putnam County (845) 279-2900

LOUIS AURISICCHIO M.D.

Internal Medicine (Gastroenterology)

672 STONELEIGH AVE
CARMEL, NY 10512

Putnam County (845) 279-2000

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 Matthew Ornstein's NPI number?

The NPI number for Matthew Ornstein is 1598737066. It was assigned to this individual provider in the NPPES registry on February 7, 2006.

Where is Matthew Ornstein located?

Matthew Ornstein practices at 672 Stoneleigh Ave Caremount Medical PC, Carmel, NY 10512. The listed phone number is (845) 231-5600.

What is Matthew Ornstein's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Matthew Ornstein enrolled in Medicare?

Yes. Matthew Ornstein 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 Matthew Ornstein's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Ornstein reassigns Medicare benefits to Optum Medical Care, P.C. (Mount Kisco, NY). 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 Matthew Ornstein's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Matthew Ornstein was last updated on November 18, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.