Quick answers
- Which hospitals does William S. Thomas work at?
- Medicare's official clinician data lists William S. Thomas at 2 hospitals: Grant Memorial Hospital and Potomac Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William S. Thomas see patients?
- Medicare's clinician data lists 3 practice locations, including Keyser, WV and Petersburg, WV. Call before your visit to confirm the address.
- What is William S. Thomas's specialty?
- Medicare lists Family Practice as the primary specialty, and also Psychiatry.
- Does William S. Thomas accept Medicare assignment?
- Medicare's clinician data says William S. Thomas may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for William S. Thomas?
- (304) 597-3500, as listed in official Medicare / NPI Registry data.
- What is William S. Thomas's NPI number?
- 1013945278. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William S. Thomas works
Medicare's Facility Affiliation Data lists William S. Thomas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Grant Memorial HospitalPetersburg, WV · Critical Access Hospital · CCN 511316
- Potomac Valley HospitalKeyser, WV · Critical Access Hospital · CCN 511315
Practice locations
Addresses where William S. Thomas is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Pin Oak LnKeyser, WV 26726 (304) 597‑3500
- 1234 New Creek HwyKeyser, WV 26726 (304) 788‑9320
- 7 Mountain View StPetersburg, WV 26847 (304) 257‑1155
Group practices
Medicare enrollment lists William S. Thomas as a member of these groups (CMS data updated 2026-10-02).
- Potomac Valley Hospital of W VA, Inc87 clinicians in the group
- Potomac Highlands Mental Health Guild, Inc.6 clinicians in the group
- New Creek Family Medicine PLLC2 clinicians in the group
Specialties
- Family Practiceprimary
- Psychiatryalso
Other family doctors in Keyser
Clinicians with the same Medicare primary specialty in Keyser, WV — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | West Virginia University School Of Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1013945278 |
| 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