Quick answers
- Which hospitals does Douglas D. Zhang work at?
- Medicare's official clinician data lists Douglas D. Zhang at 4 hospitals: Alta Bates Summit Medical Center, Eden Medical Center, Highland Hospital and Stanford Health Care. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Douglas D. Zhang see patients?
- Medicare's clinician data lists 1 practice location in San Leandro, CA. Call before your visit to confirm the address.
- What is Douglas D. Zhang's specialty?
- Medicare lists General Practice as the primary specialty.
- Does Douglas D. Zhang accept Medicare assignment?
- Yes. Medicare's clinician data says Douglas D. Zhang 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 Douglas D. Zhang?
- (510) 351-2100, as listed in official Medicare / NPI Registry data.
- What is Douglas D. Zhang's NPI number?
- 1023074341. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Douglas D. Zhang works
Medicare's Facility Affiliation Data lists Douglas D. Zhang 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
- Eden Medical CenterCastro Valley, CA · Acute Care Hospital · CCN 050488
- Highland HospitalOakland, CA · Acute Care Hospital · CCN 050320
- Stanford Health CareStanford, CA · Acute Care Hospital · CCN 050441
Practice locations
Addresses where Douglas D. Zhang is enrolled with Medicare (CMS data updated 2026-10-02).
- 13851 E 14th St, Suite 205San Leandro, CA 94578 (510) 351‑2100
Specialties
- General Practiceprimary
Other general practitioners in San Leandro
Clinicians with the same Medicare primary specialty in San Leandro, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Texas Tech University Health Science Center School Of Medicine |
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023074341 |
| 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