Quick answers
- Which hospitals does William A. Wilmer work at?
- Medicare's official clinician data lists William A. Wilmer at 5 hospitals: Fairfield Medical Center, Genesis Hospital, Hocking Valley Community Hospital, Mount Carmel East & West and Ohio State University State Health System. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William A. Wilmer see patients?
- Medicare's clinician data lists 2 practice locations, including Lancaster, OH and Westerville, OH. Call before your visit to confirm the address.
- What is William A. Wilmer's specialty?
- Medicare lists Nephrology as the primary specialty.
- Does William A. Wilmer accept Medicare assignment?
- Yes. Medicare's clinician data says William A. Wilmer 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 William A. Wilmer?
- (740) 475-0058, as listed in official Medicare / NPI Registry data.
- What is William A. Wilmer's NPI number?
- 1750380481. 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 A. Wilmer works
Medicare's Facility Affiliation Data lists William A. Wilmer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Fairfield Medical CenterLancaster, OH · Acute Care Hospital · CCN 360072
- Genesis HospitalZanesville, OH · Acute Care Hospital · CCN 360039
- Hocking Valley Community HospitalLogan, OH · Critical Access Hospital · CCN 361330
- Mount Carmel East & WestColumbus, OH · Acute Care Hospital · CCN 360035
- Ohio State University State Health SystemColumbus, OH · Acute Care Hospital · CCN 360085
Practice locations
Addresses where William A. Wilmer is enrolled with Medicare (CMS data updated 2026-10-02).
- 123 N Ewing StLancaster, OH 43130 (740) 475‑0058
- 595 Copeland Mill Rd, Suite 2dWesterville, OH 43081 (614) 823‑8500
Group practices
Medicare enrollment lists William A. Wilmer as a member of this group (CMS data updated 2026-10-02).
- Kidney Specialists, Inc.8 clinicians in the group
Specialties
- Nephrologyprimary
Other nephrologists in Lancaster
Clinicians with the same Medicare primary specialty in Lancaster, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Toledo College Of Medicine |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1750380481 |
| 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