Quick answers
- Which hospitals does Yinchong E. Mak work at?
- Medicare's official clinician data lists Yinchong E. Mak at 2 hospitals: Peninsula Medical Center and Stanford Health Care. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Yinchong E. Mak see patients?
- Medicare's clinician data lists 2 practice locations, including Fremont, CA and Palo Alto, CA. Call before your visit to confirm the address.
- What is Yinchong E. Mak's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Yinchong E. Mak accept Medicare assignment?
- Yes. Medicare's clinician data says Yinchong E. Mak 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 Yinchong E. Mak offer telehealth?
- Medicare's clinician data says Yinchong E. Mak offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Yinchong E. Mak?
- (510) 490-1222, as listed in official Medicare / NPI Registry data.
- What is Yinchong E. Mak's NPI number?
- 1982930491. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Yinchong E. Mak works
Medicare's Facility Affiliation Data lists Yinchong E. Mak at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Peninsula Medical CenterBurlingame, CA · Acute Care Hospital · CCN 050007
- Stanford Health CareStanford, CA · Acute Care Hospital · CCN 050441
Practice locations
Addresses where Yinchong E. Mak is enrolled with Medicare (CMS data updated 2026-10-02).
- 3200 Kearney StFremont, CA 94538 (510) 490‑1222
- 795 El Camino RealPalo Alto, CA 94301 (415) 600‑1020
Group practices
Medicare enrollment lists Yinchong E. Mak as a member of this group (CMS data updated 2026-10-02).
- Sutter Bay Medical Foundation3,829 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Fremont
Clinicians with the same Medicare primary specialty in Fremont, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Pittsburgh School Of Medicine |
| Graduation year | 2009 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1982930491 |
| 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