Maria Fleming Diaz, MD
NPI 1942919659 · Internal Medicine Physician · Bronx, NY
Maria Fleming Diaz, MD is a Internal Medicine Physician provider in Bronx, NY (NPI 1942919659).
Provider details
- NPI number
- 1942919659
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 341582 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Diclofenac Sodium | 28 | — |
| Atorvastatin Calcium | 24 | 16 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-11-21
- Last updated
- 2026-04-10
- Certified
- 2026-04-10
Frequently asked questions
- What is Maria Fleming Diaz's NPI number?
- Maria Fleming Diaz's National Provider Identifier (NPI) is 1942919659, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Fleming Diaz's specialty?
- Maria Fleming Diaz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Fleming Diaz located?
- Maria Fleming Diaz's practice location on file with NPPES is 260 E 188th St, Bronx, NY 10458-5302.
- What is Maria Fleming Diaz's phone number?
- The practice phone number listed in the NPPES registry for Maria Fleming Diaz is (718) 220-2020.
- Is Maria Fleming Diaz's NPI active?
- Yes — Maria Fleming Diaz's NPI (1942919659) is active in the NPPES registry as of the last update on 2026-04-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.