Quick answers
- Which hospitals does Marcia C. Peck work at?
- Medicare's official clinician data lists Marcia C. Peck at 5 hospitals: Alta Bates Summit Medical Center, Alta Bates Summit Medical Center - Alta Bates Camp…, Eden Medical Center, Stanford Health Care and Stanford Health Care Tri-Valley. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marcia C. Peck see patients?
- Medicare's clinician data lists 5 practice locations, including Orinda, CA, Castro Valley, CA and Fremont, CA. Call before your visit to confirm the address.
- What is Marcia C. Peck's specialty?
- Medicare lists Endocrinology as the primary specialty, and also Internal Medicine.
- Does Marcia C. Peck accept Medicare assignment?
- Yes. Medicare's clinician data says Marcia C. Peck 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 Marcia C. Peck offer telehealth?
- Medicare's clinician data says Marcia C. Peck offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Marcia C. Peck?
- (510) 204-8180, as listed in official Medicare / NPI Registry data.
- What is Marcia C. Peck's NPI number?
- 1376569475. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marcia C. Peck works
Medicare's Facility Affiliation Data lists Marcia C. Peck 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
- Eden Medical CenterCastro Valley, CA · Acute Care Hospital · CCN 050488
- Stanford Health CareStanford, CA · Acute Care Hospital · CCN 050441
- Stanford Health Care Tri-ValleyPleasanton, CA · Acute Care Hospital · CCN 050283
Practice locations
Addresses where Marcia C. Peck is enrolled with Medicare (CMS data updated 2026-10-02).
- 12 Camino EncinasOrinda, CA 94563 (510) 204‑8180
- 20101 Lake Chabot RdCastro Valley, CA 94546 (510) 886‑3400
- 20103 Lake Chabot RdCastro Valley, CA 94546 (510) 727‑3256
- 20130 Lake Chabot RdCastro Valley, CA 94546
- 3200 Kearney StFremont, CA 94538 (510) 490‑1222
Group practices
Medicare enrollment lists Marcia C. Peck as a member of this group (CMS data updated 2026-10-02).
- Sutter Bay Medical Foundation3,829 clinicians in the group
Specialties
- Endocrinologyprimary
- Internal Medicinealso
Other endocrinologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Chicago, Pritzker School Of Medicine |
| Graduation year | 2000 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1376569475 |
| 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