Quick answers
- Where does Geraldine C. Diaz see patients?
- Medicare's clinician data lists 5 practice locations, including Roslyn, NY, Hartsdale, NY and Brooklyn, NY. Call before your visit to confirm the address.
- What is Geraldine C. Diaz's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Geraldine C. Diaz accept Medicare assignment?
- Yes. Medicare's clinician data says Geraldine C. 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 Geraldine C. Diaz?
- (718) 222-5999, as listed in official Medicare / NPI Registry data.
- What is Geraldine C. Diaz's NPI number?
- 1003987967. 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 Geraldine C. Diaz is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Port Washington BlvdRoslyn, NY 11576
- 101 S Central AveHartsdale, NY 10530 (718) 222‑5999
- 1396 Myrtle AveBrooklyn, NY 11237 (718) 222‑5999
- 480 Hicksville RdBethpage, NY 11714 (718) 222‑5999
- 601 Suffolk AveBrentwood, NY 11717 (631) 625‑6660
Group practices
Medicare enrollment lists Geraldine C. Diaz as a member of these groups (CMS data updated 2026-10-02).
- North American Partners in Anesthesia LLP439 clinicians in the group
- New York Cardiovascular Anesthesiologists, P.C.134 clinicians in the group
- Sedation Vacation Perioperative Medicine PLLC82 clinicians in the group
- Randn Anesthesia PLLC34 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Roslyn
Clinicians with the same Medicare primary specialty in Roslyn, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Philadelphia College Of Osteopathic Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003987967 |
| 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