Quick answers
- Which hospitals does Lee A. Tan work at?
- Medicare's official clinician data lists Lee A. Tan at 4 hospitals: Memorial Medical Center, Oroville Hospital, Providence St Joseph Hospital and UCSF Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lee A. Tan see patients?
- Medicare's clinician data lists 1 practice location in San Francisco, CA. Call before your visit to confirm the address.
- What is Lee A. Tan's specialty?
- Medicare lists Neurosurgery as the primary specialty.
- Does Lee A. Tan accept Medicare assignment?
- Yes. Medicare's clinician data says Lee A. Tan 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 Lee A. Tan offer telehealth?
- Medicare's clinician data says Lee A. Tan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Lee A. Tan?
- (415) 476-1000, as listed in official Medicare / NPI Registry data.
- What is Lee A. Tan's NPI number?
- 1295056802. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lee A. Tan works
Medicare's Facility Affiliation Data lists Lee A. Tan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorial Medical CenterModesto, CA · Acute Care Hospital · CCN 050557
- Oroville HospitalOroville, CA · Acute Care Hospital · CCN 050030
- Providence St Joseph HospitalEureka, CA · Acute Care Hospital · CCN 050006
- UCSF Medical CenterSan Francisco, CA · Acute Care Hospital · CCN 050454
Practice locations
Addresses where Lee A. Tan is enrolled with Medicare (CMS data updated 2026-10-02).
- 400 Parnassus AveSan Francisco, CA 94143 (415) 476‑1000
Group practices
Medicare enrollment lists Lee A. Tan as a member of this group (CMS data updated 2026-10-02).
- UCSF Medical Group Business Services1,598 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Indiana University School Of Medicine |
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1295056802 |
| 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