Matthew Herbert Ornstein, M.D.
Rheumatology Physician · Carmel, NY
Matthew Herbert Ornstein, M.D. is a rheumatology physician with a practice address in Carmel, New York, and NPI 1598737066, issued on Feb 7, 2006. Check the license (New York 179957-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Matthew Herbert Ornstein
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 179957-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 672 Stoneleigh Ave, Carmel, NY 10512
- Phone
- (845) 231-5600
- Enumerated
- Feb 7, 2006
- Record last updated
- Nov 18, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (845) 231-5489
- Medicaid ID
- 01415127 NY
- Medicare enrollment
- Enrolled (PECOS I20041028000645); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 599 in New York → Look up another NPI →
Also registered at 672 Stoneleigh Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Matthew Herbert Ornstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 179957-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,791 Medicare Part D claims for 347 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Hydroxychloroquine Sulfate298 claims
- Prednisone288 claims
- Methylprednisolone129 claims
- Allopurinol122 claims
- Enbrel Sureclick118 claims
- Methotrexate115 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Optum Medical Care PCMount Kisco, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Herbert Ornstein among 599 rheumatology physician records in New York
Matthew Herbert Ornstein, M.D. is one of 599 rheumatology physician records with a practice address in New York. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1988 · median 2003 among the 425 with a school on file
- Record last updated2016 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in New York
There are 599 rheumatology physician records in New York.
All 599 in New York → Every provider in Carmel → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Jean Park, M.D.Carmel, NY 105121306048087
- Bernard Joffe, M.D.Chappaqua, NY 105141851846240
- Ronen Marmur, MDBrewster, NY 105091609821818
- Marcie Wolinsky-Friedland, M.D.Brewster, NY 105091023138518
- Stephanie Dondero, D.O.Armonk, NY 105041578978656
- Ivan Ramirez De Oleo, MDCroton On Hudson, NY 105201013463397
- Matthew Snyder, DOHarrison, NY 105281629572938
- Farrah Gutwein, D.O.Hawthorne, NY 105321841593985
Common questions
What is Matthew Herbert Ornstein, M.D.'s NPI number?
Matthew Herbert Ornstein, M.D.'s National Provider Identifier (NPI) is 1598737066, issued on Feb 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Herbert Ornstein, M.D. located?
The NPPES record lists a practice address at 672 Stoneleigh Ave, Carmel, NY, 10512. Phone: (845) 231-5600. Providers update this record themselves, so call before visiting.
How can I verify Matthew Herbert Ornstein, M.D.'s license?
NPPES lists New York license number 179957-1, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Matthew Herbert Ornstein, M.D. prescribe under Medicare Part D?
In 2024, Matthew Herbert Ornstein, M.D. had 1,791 Medicare Part D claims for 347 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.