Quick answers
- Which hospitals does Mian M. Hammas work at?
- Medicare's official clinician data lists Mian M. Hammas at 1 hospital: Kaleida Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mian M. Hammas see patients?
- Medicare's clinician data lists 2 practice locations, including Buffalo, NY and Williamsville, NY. Call before your visit to confirm the address.
- What is Mian M. Hammas's specialty?
- Medicare lists Hospitalist as the primary specialty, and also Internal Medicine.
- Does Mian M. Hammas accept Medicare assignment?
- Yes. Medicare's clinician data says Mian M. Hammas 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 Mian M. Hammas?
- (716) 859-1400, as listed in official Medicare / NPI Registry data.
- What is Mian M. Hammas's NPI number?
- 1003557281. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mian M. Hammas works
Medicare's Facility Affiliation Data lists Mian M. Hammas 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
Practice locations
Addresses where Mian M. Hammas is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 High StBuffalo, NY 14203 (716) 859‑1400
- 1540 Maple RdWilliamsville, NY 14221 (716) 568‑3600
Group practices
Medicare enrollment lists Mian M. Hammas as a member of this group (CMS data updated 2026-10-02).
- General Physician PC501 clinicians in the group
Specialties
- Hospitalistprimary
- Internal Medicinealso
Other hospitalists in Buffalo
Clinicians with the same Medicare primary specialty in Buffalo, NY — not a recommendation.
Clinician information
| Graduation year | 2022 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003557281 |
| 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