Quick answers
- Which hospitals does Thomas B. Williamson work at?
- Medicare's official clinician data lists Thomas B. Williamson at 2 hospitals: Cleveland Clinic and Firelands Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas B. Williamson see patients?
- Medicare's clinician data lists 2 practice locations, including Sandusky, OH and Huron, OH. Call before your visit to confirm the address.
- What is Thomas B. Williamson's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Thomas B. Williamson accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas B. Williamson 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 Thomas B. Williamson?
- (419) 557-5177, as listed in official Medicare / NPI Registry data.
- What is Thomas B. Williamson's NPI number?
- 1295774461. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas B. Williamson works
Medicare's Facility Affiliation Data lists Thomas B. Williamson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cleveland ClinicCleveland, OH · Acute Care Hospital · CCN 360180
- Firelands Regional Medical CenterSandusky, OH · Acute Care Hospital · CCN 360025
Practice locations
Addresses where Thomas B. Williamson is enrolled with Medicare (CMS data updated 2026-10-02).
- 1925 Hayes AveSandusky, OH 44870 (419) 557‑5177
- 300 Williams StHuron, OH 44839 (419) 433‑5222
Group practices
Medicare enrollment lists Thomas B. Williamson as a member of this group (CMS data updated 2026-10-02).
- North Coast Professional Company, LLC107 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Sandusky
Clinicians with the same Medicare primary specialty in Sandusky, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Rochester School Of Medicine And Dentistry |
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1295774461 |
| 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