Quick answers
- Which hospitals does William H. Holderman work at?
- Medicare's official clinician data lists William H. Holderman at 2 hospitals: St Joseph Medical Center and Tacoma General Allenmore Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William H. Holderman see patients?
- Medicare's clinician data lists 1 practice location in Tacoma, WA. Call before your visit to confirm the address.
- What is William H. Holderman's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does William H. Holderman accept Medicare assignment?
- Yes. Medicare's clinician data says William H. Holderman 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.
- Does William H. Holderman offer telehealth?
- Medicare's clinician data says William H. Holderman offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William H. Holderman?
- (253) 272-5127, as listed in official Medicare / NPI Registry data.
- What is William H. Holderman's NPI number?
- 1346213956. 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 H. Holderman works
Medicare's Facility Affiliation Data lists William H. Holderman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Joseph Medical CenterTacoma, WA · Acute Care Hospital · CCN 500108
- Tacoma General Allenmore HospitalTacoma, WA · Acute Care Hospital · CCN 500129
Practice locations
Addresses where William H. Holderman is enrolled with Medicare (CMS data updated 2026-10-02).
- 2202 S Cedar St, Suite 330Tacoma, WA 98405 (253) 272‑5127
Group practices
Medicare enrollment lists William H. Holderman as a member of this group (CMS data updated 2026-10-02).
- Washington Gastroenterology PLLC143 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Tacoma
Clinicians with the same Medicare primary specialty in Tacoma, WA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | R Franklin University Of Med & Sci/chicago Medical School |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1346213956 |
| 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