Quick answers
- Which hospitals does William S. Clark work at?
- Medicare's official clinician data lists William S. Clark at 3 hospitals: Doctors Hospital of Manteca, Emanuel Medical Center and John C Fremont Healthcare District. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William S. Clark see patients?
- Medicare's clinician data lists 3 practice locations, including Salinas, CA, Mariposa, CA and Sun Valley, CA. Call before your visit to confirm the address.
- What is William S. Clark's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does William S. Clark accept Medicare assignment?
- Yes. Medicare's clinician data says William S. Clark 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 S. Clark?
- (831) 755-4111, as listed in official Medicare / NPI Registry data.
- What is William S. Clark's NPI number?
- 1770690430. 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. Clark works
Medicare's Facility Affiliation Data lists William S. Clark at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Doctors Hospital of MantecaManteca, CA · Acute Care Hospital · CCN 050118
- Emanuel Medical CenterTurlock, CA · Acute Care Hospital · CCN 050179
- John C Fremont Healthcare DistrictMariposa, CA · Critical Access Hospital · CCN 051304
Practice locations
Addresses where William S. Clark is enrolled with Medicare (CMS data updated 2026-10-02).
- 1441 Constitution BlvdSalinas, CA 93906 (831) 755‑4111
- 5189 Hospital RdMariposa, CA 95338 (209) 966‑3631
- 9449 San Fernando RdSun Valley, CA 91352 (818) 767‑3310
Group practices
Medicare enrollment lists William S. Clark as a member of these groups (CMS data updated 2026-10-02).
- Cep America - California1,292 clinicians in the group
- Premier Health Partners18 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Salinas
Clinicians with the same Medicare primary specialty in Salinas, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Chicago College Of Osteopathy |
| Graduation year | 2000 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1770690430 |
| 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