Matthew Greenblatt, M.D., PH.D.
NPI 1043653405 · Clinical Pathology/Laboratory Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Greenblatt, M.D., PH.D. is a Clinical Pathology/Laboratory Medicine Physician provider in New York, NY (NPI 1043653405).
Provider details
- NPI number
- 1043653405
- Entity type
- Individual
- Primary specialty
- Clinical Pathology/Laboratory Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 277626 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,656 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Protein Measurement, Serum84165 | 1,179 | $20 |
| Immunologic Analysis Technique on Serum (immunofixation)86334 | 1,148 | $20 |
| Protein Measurement, Body Fluid84166 | 157 | $20 |
| Immunologic Analysis Technique on Body Fluid, Other Fluids With Concentration86335 | 140 | $20 |
| Coagulation Function Screening Test With Interpretation and Report85390 | 32 | $41 |
Typical Medicare-allowed amounts for these services range $20–$41 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,087 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-04-16
- Last updated
- 2023-10-02
- Certified
- 2023-10-02
Frequently asked questions
- What is Matthew Greenblatt's NPI number?
- Matthew Greenblatt's National Provider Identifier (NPI) is 1043653405, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Greenblatt's specialty?
- Matthew Greenblatt is listed in the NPPES registry with a primary specialty of Clinical Pathology/Laboratory Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Greenblatt located?
- Matthew Greenblatt's practice location on file with NPPES is 1300 York Ave # Lc929a, New York, NY 10065-4805.
- What is Matthew Greenblatt's phone number?
- The practice phone number listed in the NPPES registry for Matthew Greenblatt is (212) 746-1602.
- Does Matthew Greenblatt accept Medicare?
- Matthew Greenblatt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Greenblatt's NPI active?
- Yes — Matthew Greenblatt's NPI (1043653405) is active in the NPPES registry as of the last update on 2023-10-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.