Quick answers
- Which hospitals does Ellen Wallace work at?
- Medicare's official clinician data lists Ellen Wallace at 2 hospitals: Alta Bates Summit Medical Center and Alta Bates Summit Medical Center - Alta Bates Camp…. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ellen Wallace see patients?
- Medicare's clinician data lists 7 practice locations, including Castro Valley, CA, Oakland, CA and Fremont, CA. Call before your visit to confirm the address.
- What is Ellen Wallace's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Ellen Wallace accept Medicare assignment?
- Yes. Medicare's clinician data says Ellen Wallace 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 Ellen Wallace offer telehealth?
- Medicare's clinician data says Ellen Wallace offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Ellen Wallace?
- (510) 886-3400, as listed in official Medicare / NPI Registry data.
- What is Ellen Wallace's NPI number?
- 1427685734. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ellen Wallace works
Medicare's Facility Affiliation Data lists Ellen Wallace 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
Practice locations
Addresses where Ellen Wallace is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 20101 Lake Chabot RdCastro Valley, CA 94546 (510) 886‑3400
- 20103 Lake Chabot RdCastro Valley, CA 94546 (510) 727‑3256
- 3100 Telegraph AveOakland, CA 94609 (510) 204‑8290
- 3200 Kearney StFremont, CA 94538 (510) 490‑1222
- 350 30th St, Suite 100Oakland, CA 94609 (510) 204‑8290
Group practices
Medicare enrollment lists Ellen Wallace as a member of this group (CMS data updated 2026-10-02).
- Sutter Bay Medical Foundation3,829 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Castro Valley
Clinicians with the same Medicare primary specialty in Castro Valley, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Massachusetts Medical School |
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1427685734 |
| 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