Quick answers
- Which hospitals does James L. Rembert work at?
- Medicare's official clinician data lists James L. Rembert at 5 hospitals: Alta Bates Summit Medical Center - Alta Bates Camp…, Contra Costa Regional Medical Center, John Muir Medical Center - Concord Campus, John Muir Medical Center - Walnut Creek Campus and UCSF Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James L. Rembert see patients?
- Medicare's clinician data lists 4 practice locations, including San Francisco, CA, Berkeley, CA and Pleasant Hill, CA. Call before your visit to confirm the address.
- What is James L. Rembert's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does James L. Rembert accept Medicare assignment?
- Yes. Medicare's clinician data says James L. Rembert 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 James L. Rembert offer telehealth?
- Medicare's clinician data says James L. Rembert offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for James L. Rembert?
- (415) 476-4029, as listed in official Medicare / NPI Registry data.
- What is James L. Rembert's NPI number?
- 1124080916. 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 L. Rembert works
Medicare's Facility Affiliation Data lists James L. Rembert 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 Center - Alta Bates Camp…Berkeley, CA · Acute Care Hospital · CCN 050305
- Contra Costa Regional Medical CenterMartinez, CA · Acute Care Hospital · CCN 050276
- John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · CCN 050496
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · CCN 050180
- UCSF Medical CenterSan Francisco, CA · Acute Care Hospital · CCN 050454
Practice locations
Addresses where James L. Rembert is enrolled with Medicare (CMS data updated 2026-10-02).
- 2330 Post StSan Francisco, CA 94115 (415) 476‑4029
- 3100 San Pablo AveBerkeley, CA 94702 (510) 985‑5020
- 400 Taylor Blvd, Suite 105Pleasant Hill, CA 94523 (925) 677‑5041
- 400 Taylor Lbvd, Suite 101Pleasant Hill, CA 94523 (925) 677‑5041
Group practices
Medicare enrollment lists James L. Rembert as a member of these groups (CMS data updated 2026-10-02).
- University of California San Francisco1,839 clinicians in the group
- UCSF Medical Group Business Services1,598 clinicians in the group
- John Muir Physician Network494 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Perelman School Of Med At The University Of Pennsylvania |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1124080916 |
| 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