Quick answers
- Which hospitals does Margo Estrin work at?
- Medicare's official clinician data lists Margo Estrin at 3 hospitals: John Muir Medical Center - Walnut Creek Campus, San Ramon Regional Medical Center and Stanford Health Care Tri-Valley. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Margo Estrin see patients?
- Medicare's clinician data lists 1 practice location in Danville, CA. Call before your visit to confirm the address.
- What is Margo Estrin's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Margo Estrin accept Medicare assignment?
- Medicare's clinician data says Margo Estrin may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Margo Estrin?
- (925) 837-6006, as listed in official Medicare / NPI Registry data.
- What is Margo Estrin's NPI number?
- 1891840096. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Margo Estrin works
Medicare's Facility Affiliation Data lists Margo Estrin at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · CCN 050180
- San Ramon Regional Medical CenterSan Ramon, CA · Acute Care Hospital · CCN 050689
- Stanford Health Care Tri-ValleyPleasanton, CA · Acute Care Hospital · CCN 050283
Practice locations
Addresses where Margo Estrin is enrolled with Medicare (CMS data updated 2026-10-02).
- 903 San Ramon Valley Blvd, Suite 222Danville, CA 94526 (925) 837‑6006
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Danville
Clinicians with the same Medicare primary specialty in Danville, CA — not a recommendation.
Clinician information
| Medical school | University Of Southern California Keck School Of Medicine |
|---|---|
| Graduation year | 1978 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1891840096 |
| 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