Quick answers
- Which hospitals does Lorena H. Tan work at?
- Medicare's official clinician data lists Lorena H. Tan at 2 hospitals: Stanford Health Care and Stanford Health Care Tri-Valley. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lorena H. Tan see patients?
- Medicare's clinician data lists 1 practice location in Livermore, CA. Call before your visit to confirm the address.
- What is Lorena H. Tan's specialty?
- Medicare lists Family Practice as the primary specialty, and also Emergency Medicine.
- Does Lorena H. Tan accept Medicare assignment?
- Yes. Medicare's clinician data says Lorena H. 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 Lorena H. Tan offer telehealth?
- Medicare's clinician data says Lorena H. Tan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Lorena H. Tan?
- (925) 443-9000, as listed in official Medicare / NPI Registry data.
- What is Lorena H. Tan's NPI number?
- 1417957697. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lorena H. Tan works
Medicare's Facility Affiliation Data lists Lorena H. Tan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Stanford Health CareStanford, CA · Acute Care Hospital · CCN 050441
- Stanford Health Care Tri-ValleyPleasanton, CA · Acute Care Hospital · CCN 050283
Practice locations
Addresses where Lorena H. Tan is enrolled with Medicare (CMS data updated 2026-10-02).
- 1133 E Stanley Blvd, Suite 201Livermore, CA 94550 (925) 443‑9000
Specialties
- Family Practiceprimary
- Emergency Medicinealso
Other family doctors in Livermore
Clinicians with the same Medicare primary specialty in Livermore, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 1995 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1417957697 |
| 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