Quick answers
- Which hospitals does Gregory Marra work at?
- Medicare's official clinician data lists Gregory Marra at 3 hospitals: Kaleida Health, Mercy Hospital of Buffalo and Sisters of Charity Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory Marra see patients?
- Medicare's clinician data lists 2 practice locations, including Buffalo, NY and Hamburg, NY. Call before your visit to confirm the address.
- What is Gregory Marra's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Gregory Marra accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory Marra 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 Gregory Marra?
- (716) 826-7000, as listed in official Medicare / NPI Registry data.
- What is Gregory Marra's NPI number?
- 1275997140. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory Marra works
Medicare's Facility Affiliation Data lists Gregory Marra at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Kaleida HealthBuffalo, NY · Acute Care Hospital · CCN 330005
- Mercy Hospital of BuffaloBuffalo, NY · Acute Care Hospital · CCN 330279
- Sisters of Charity HospitalBuffalo, NY · Acute Care Hospital · CCN 330078
Practice locations
Addresses where Gregory Marra is enrolled with Medicare (CMS data updated 2026-10-02).
- 565 Abbott RdBuffalo, NY 14220 (716) 826‑7000
- 5844 Southwestern Blvd, Suite 500Hamburg, NY 14075 (716) 646‑5500
Group practices
Medicare enrollment lists Gregory Marra as a member of these groups (CMS data updated 2026-10-02).
- Mercy Hospital of Buffalo196 clinicians in the group
- Preferred Physician Care PC27 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Buffalo
Clinicians with the same Medicare primary specialty in Buffalo, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275997140 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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