Quick answers
- Which hospitals does Ruth M. Mattern work at?
- Medicare's official clinician data lists Ruth M. Mattern at 1 hospital: Erie County Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ruth M. Mattern see patients?
- Medicare's clinician data lists 2 practice locations, including Buffalo, NY and Orchard Park, NY. Call before your visit to confirm the address.
- What is Ruth M. Mattern's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Ruth M. Mattern accept Medicare assignment?
- Yes. Medicare's clinician data says Ruth M. Mattern 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 Ruth M. Mattern?
- (716) 881-7900, as listed in official Medicare / NPI Registry data.
- What is Ruth M. Mattern's NPI number?
- 1790719227. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ruth M. Mattern works
Medicare's Facility Affiliation Data lists Ruth M. Mattern at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Erie County Medical CenterBuffalo, NY · Acute Care Hospital · CCN 330219
Practice locations
Addresses where Ruth M. Mattern is enrolled with Medicare (CMS data updated 2026-10-02).
- 1176 Main StBuffalo, NY 14209 (716) 881‑7900
- 301 Sterling DrOrchard Park, NY 14127 (716) 677‑6500
Group practices
Medicare enrollment lists Ruth M. Mattern as a member of this group (CMS data updated 2026-10-02).
- University Ophthalmology Services Inc17 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Buffalo
Clinicians with the same Medicare primary specialty in Buffalo, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Harvard Medical School |
| Graduation year | 1989 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1790719227 |
| 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