Quick answers
- Which hospitals does William A. Rumack work at?
- Medicare's official clinician data lists William A. Rumack at 1 hospital: UCLA West Valley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William A. Rumack see patients?
- Medicare's clinician data lists 1 practice location in West Hills, CA. Call before your visit to confirm the address.
- What is William A. Rumack's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does William A. Rumack accept Medicare assignment?
- Yes. Medicare's clinician data says William A. Rumack 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. Rumack?
- (818) 888-2855, as listed in official Medicare / NPI Registry data.
- What is William A. Rumack's NPI number?
- 1740257542. 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. Rumack works
Medicare's Facility Affiliation Data lists William A. Rumack at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UCLA West Valley Medical CenterWest Hills, CA · Acute Care Hospital · CCN 050481
Practice locations
Addresses where William A. Rumack is enrolled with Medicare (CMS data updated 2026-10-02).
- 7345 Medical Ctr Dr, Suite 280West Hills, CA 91307 (818) 888‑2855
Group practices
Medicare enrollment lists William A. Rumack as a member of this group (CMS data updated 2026-10-02).
- Professional Orthopedics Medical Associates a Prof Medical Corp3 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Colorado School Of Medicine, Denver |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740257542 |
| 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