Quick answers
- Which hospitals does James W. Simmons work at?
- Medicare's official clinician data lists James W. Simmons at 5 hospitals: Alta Bates Summit Medical Center, Alta Bates Summit Medical Center - Alta Bates Camp…, Dameron Hospital, Mercy Medical Center and Sutter Delta Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James W. Simmons see patients?
- Medicare's clinician data lists 3 practice locations, including Merced, CA, Antioch, CA and Stockton, CA. Call before your visit to confirm the address.
- What is James W. Simmons's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does James W. Simmons accept Medicare assignment?
- Yes. Medicare's clinician data says James W. Simmons 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 W. Simmons?
- (209) 564-5000, as listed in official Medicare / NPI Registry data.
- What is James W. Simmons's NPI number?
- 1366744492. 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 W. Simmons works
Medicare's Facility Affiliation Data lists James W. Simmons at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alta Bates Summit Medical CenterOakland, CA · Acute Care Hospital · CCN 050043
- Alta Bates Summit Medical Center - Alta Bates Camp…Berkeley, CA · Acute Care Hospital · CCN 050305
- Dameron HospitalStockton, CA · Acute Care Hospital · CCN 050122
- Mercy Medical CenterMerced, CA · Acute Care Hospital · CCN 050444
- Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · CCN 050523
Practice locations
Addresses where James W. Simmons is enrolled with Medicare (CMS data updated 2026-10-02).
- 333 Mercy AveMerced, CA 95340 (209) 564‑5000
- 3901 Lone Tree WayAntioch, CA 94509 (925) 779‑7200
- 525 W Acacia StStockton, CA 95203 (530) 244‑5400
Group practices
Medicare enrollment lists James W. Simmons as a member of these groups (CMS data updated 2026-10-02).
- Inpatient Specialists of California PC385 clinicians in the group
- Trinity Emergency Physicians47 clinicians in the group
- Merced Intensivist Group Inc9 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Merced
Clinicians with the same Medicare primary specialty in Merced, CA — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1366744492 |
| 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