Quick answers
- Which hospitals does James G. Williams work at?
- Medicare's official clinician data lists James G. Williams at 2 hospitals: Casa Colina Hospital and Emanate Health Inter-Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James G. Williams see patients?
- Medicare's clinician data lists 1 practice location in Covina, CA. Call before your visit to confirm the address.
- What is James G. Williams's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does James G. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says James G. Williams 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 James G. Williams?
- (626) 966-2111, as listed in official Medicare / NPI Registry data.
- What is James G. Williams's NPI number?
- 1316924608. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James G. Williams works
Medicare's Facility Affiliation Data lists James G. Williams at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Casa Colina HospitalPomona, CA · Acute Care Hospital · CCN 050782
- Emanate Health Inter-Community HospitalCovina, CA · Acute Care Hospital · CCN 050382
Practice locations
Addresses where James G. Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 202 W College StCovina, CA 91723 (626) 966‑2111
Specialties
- Otolaryngologyprimary
Other ENT doctors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Baylor College Of Medicine |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1316924608 |
| 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