Quick answers
- Which hospitals does William M. Entwistle work at?
- Medicare's official clinician data lists William M. Entwistle at 2 hospitals: Memorial Hospital Los Banos and Mercy Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William M. Entwistle see patients?
- Medicare's clinician data lists 3 practice locations, including Merced, CA. Call before your visit to confirm the address.
- What is William M. Entwistle's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does William M. Entwistle accept Medicare assignment?
- Yes. Medicare's clinician data says William M. Entwistle 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 M. Entwistle offer telehealth?
- Medicare's clinician data says William M. Entwistle offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William M. Entwistle?
- (209) 723-3704, as listed in official Medicare / NPI Registry data.
- What is William M. Entwistle's NPI number?
- 1891174785. 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 M. Entwistle works
Medicare's Facility Affiliation Data lists William M. Entwistle at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorial Hospital Los BanosLos Banos, CA · Acute Care Hospital · CCN 050528
- Mercy Medical CenterMerced, CA · Acute Care Hospital · CCN 050444
Practice locations
Addresses where William M. Entwistle is enrolled with Medicare (CMS data updated 2026-10-02).
- 127 W El Portal DrMerced, CA 95348 (209) 723‑3704
- 3385 G St, Suite AMerced, CA 95340 (209) 725‑3122
- 535 W 25th St, Mfa Parkside Medical ClinicMerced, CA 95340 (209) 722‑9066
Group practices
Medicare enrollment lists William M. Entwistle as a member of this group (CMS data updated 2026-10-02).
- Merced Faculty Associates Medical Group Incorporated26 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Merced
Clinicians with the same Medicare primary specialty in Merced, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1891174785 |
| 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