Quick answers
- Which hospitals does Stephen A. Mechtler work at?
- Medicare's official clinician data lists Stephen A. Mechtler at 2 hospitals: Kaleida Health and Sisters of Charity Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephen A. Mechtler see patients?
- Medicare's clinician data lists 1 practice location in Williamsville, NY. Call before your visit to confirm the address.
- What is Stephen A. Mechtler's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Stephen A. Mechtler accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen A. Mechtler 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 Stephen A. Mechtler?
- (716) 631-3555, as listed in official Medicare / NPI Registry data.
- What is Stephen A. Mechtler's NPI number?
- 1558321372. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephen A. Mechtler works
Medicare's Facility Affiliation Data lists Stephen A. Mechtler 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
- Sisters of Charity HospitalBuffalo, NY · Acute Care Hospital · CCN 330078
Practice locations
Addresses where Stephen A. Mechtler is enrolled with Medicare (CMS data updated 2026-10-02).
- 400 International DrWilliamsville, NY 14221 (716) 631‑3555
Group practices
Medicare enrollment lists Stephen A. Mechtler as a member of this group (CMS data updated 2026-10-02).
- Brain and Spine Medical Services PLLC56 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Williamsville
Clinicians with the same Medicare primary specialty in Williamsville, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558321372 |
| 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