Quick answers
- Which hospitals does Eric J. Thierman work at?
- Medicare's official clinician data lists Eric J. Thierman at 3 hospitals: Kaleida Health, Olean General Hospital and Sisters of Charity Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Eric J. Thierman see patients?
- Medicare's clinician data lists 3 practice locations, including Williamsville, NY and Getzville, NY. Call before your visit to confirm the address.
- What is Eric J. Thierman's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Pediatric Medicine.
- Does Eric J. Thierman accept Medicare assignment?
- Yes. Medicare's clinician data says Eric J. Thierman 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 Eric J. Thierman?
- (716) 634-1168, as listed in official Medicare / NPI Registry data.
- What is Eric J. Thierman's NPI number?
- 1235101908. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Eric J. Thierman works
Medicare's Facility Affiliation Data lists Eric J. Thierman 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
- Olean General HospitalOlean, NY · Acute Care Hospital · CCN 330103
- Sisters of Charity HospitalBuffalo, NY · Acute Care Hospital · CCN 330078
Practice locations
Addresses where Eric J. Thierman is enrolled with Medicare (CMS data updated 2026-10-02).
- 1835 Maple Rd, Suite 1Williamsville, NY 14221 (716) 634‑1168
- 2235 Millersport Hwy, Suite 100Getzville, NY 14068 (716) 204‑5933
- 2235 Millersport Hwy 100Getzville, NY 14068
Group practices
Medicare enrollment lists Eric J. Thierman as a member of these groups (CMS data updated 2026-10-02).
- Maple Internal Medicine and Pediatrics PLLC8 clinicians in the group
- Internal Med Id Associates, LLC5 clinicians in the group
Specialties
- Internal Medicineprimary
- Pediatric Medicinealso
Other internal medicine doctors in Williamsville
Clinicians with the same Medicare primary specialty in Williamsville, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York At Buffalo School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235101908 |
| 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