Matthew Ornstein, M.D.
NPI 1598737066 · Rheumatology Physician · Carmel, NY
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Ornstein, M.D. is a Rheumatology Physician provider in Carmel, NY (NPI 1598737066).
Provider details
- NPI number
- 1598737066
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 179957-1 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,959 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 717 | $143 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 567 | $9 |
| Red Blood Cell Sedimentation Rate, to Detect Inflammation, Automated85652 | 424 | $3 |
| Measurement C-Reactive Protein for Detection of Infection Or Inflammation86140 | 363 | $5 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 352 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 351 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 298 | 91 |
| Prednisone | 288 | 116 |
| Methylprednisolone | 129 | 45 |
| Allopurinol | 122 | 34 |
| Etanerceptbrand: Enbrel Sureclick | 118 | 13 |
| Methotrexate Sodiumbrand: Methotrexate | 115 | 35 |
| Gabapentin | 94 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-07
- Last updated
- 2016-11-18
Frequently asked questions
- What is Matthew Ornstein's NPI number?
- Matthew Ornstein's National Provider Identifier (NPI) is 1598737066, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Ornstein's specialty?
- Matthew Ornstein is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Ornstein located?
- Matthew Ornstein's practice location on file with NPPES is 672 Stoneleigh Ave, Carmel, NY 10512-4634.
- What is Matthew Ornstein's phone number?
- The practice phone number listed in the NPPES registry for Matthew Ornstein is (845) 231-5600.
- Does Matthew Ornstein accept Medicare?
- Matthew Ornstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Ornstein's NPI active?
- Yes — Matthew Ornstein's NPI (1598737066) is active in the NPPES registry as of the last update on 2016-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.