Quick answers
- Which hospitals does Andrew Lai work at?
- Medicare's official clinician data lists Andrew Lai at 2 hospitals: UCSF Health St. Mary's Hospital and UCSF Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Andrew Lai see patients?
- Medicare's clinician data lists 1 practice location in San Francisco, CA. Call before your visit to confirm the address.
- What is Andrew Lai's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Andrew Lai accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew Lai 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 Andrew Lai?
- (415) 476-4029, as listed in official Medicare / NPI Registry data.
- What is Andrew Lai's NPI number?
- 1861666281. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Andrew Lai works
Medicare's Facility Affiliation Data lists Andrew Lai at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UCSF Health St. Mary's HospitalSan Francisco, CA · Acute Care Hospital · CCN 050457
- UCSF Medical CenterSan Francisco, CA · Acute Care Hospital · CCN 050454
Practice locations
Addresses where Andrew Lai is enrolled with Medicare (CMS data updated 2026-10-02).
- 400 Parnassus AveSan Francisco, CA 94143 (415) 476‑4029
Group practices
Medicare enrollment lists Andrew Lai as a member of this group (CMS data updated 2026-10-02).
- Regents of the University of California732 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Warren Alpert Medical School Of Brown University |
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861666281 |
| 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