Quick answers
- Where does Maria D. Diaz see patients?
- Medicare's clinician data lists 1 practice location in New York, NY. Call before your visit to confirm the address.
- What is Maria D. Diaz's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Maria D. Diaz accept Medicare assignment?
- Yes. Medicare's clinician data says Maria D. Diaz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Maria D. Diaz?
- (212) 740-2020, as listed in official Medicare / NPI Registry data.
- What is Maria D. Diaz's NPI number?
- 1316991417. 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 D. Diaz is enrolled with Medicare (CMS data updated 2026-10-02).
- 4405 BroadwayNew York, NY 10040 (212) 740‑2020
Group practices
Medicare enrollment lists Maria D. Diaz as a member of this group (CMS data updated 2026-10-02).
- Griffin Myers Medical PC82 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1978 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1316991417 |
| Corrections | Report 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians