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Internal Medicine

Maria F. Fleming Diaz, MD

Sees patients in Bronx, NY · New York

Summary

Dr. Maria F. Fleming Diaz, MD is an internal medicine doctor at 260 E 188th St, Bronx, NY 10458. Accepts Medicare assignment. NPI 1942919659. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 260 E 188th St, Bronx, NY 10458 · Directions
  • Medicare: Accepts Medicare assignment
  • Medical school: graduated 2013 (13 years since medical school)
  • Gender (as listed): Female
NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Maria F. Fleming Diaz, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Maria F. Fleming Diaz accept Medicare assignment?
Yes. Medicare's clinician data says Maria F. Fleming Diaz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Maria F. Fleming Diaz's NPI number?
1942919659. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Maria F. Fleming Diaz is enrolled with Medicare (CMS data updated October 2, 2026).

  • 260 E 188th StBronx, NY 10458

Specialties

Find other Internal Medicine doctors in New York →

Other internal medicine doctors in Bronx

Clinicians with the same Medicare primary specialty in Bronx, NY — not a recommendation.

All internal medicine doctors in Bronx →

Clinician information

CredentialMD
Graduation year2013 (13 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1942919659
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians