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Family Practice

Andrea Sandler, MD

Works at hospitals in Martinez, CA · California

Summary

Dr. Andrea Sandler, MD is a family doctor at 331 C St, Martinez, CA 94553. May accept Medicare assignment. NPI 1073551719. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 331 C St, Martinez, CA 94553 · Directions
  • Medicare: May accept Medicare assignment
  • Hospital: Contra Costa Regional Medical Center
  • Medical school: University Of California, San Francisco School Of Medicine · graduated 2002 (24 years since medical school)
  • Gender (as listed): Female
NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Andrea Sandler, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Andrea Sandler accept Medicare assignment?
Medicare's clinician data says Andrea Sandler may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
What is Andrea Sandler's NPI number?
1073551719. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Andrea Sandler works

Medicare's Facility Affiliation Data lists Andrea Sandler at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Andrea Sandler is enrolled with Medicare (CMS data updated October 2, 2026).

  • 331 C StMartinez, CA 94553

Specialties

Find other Family Practice doctors in California →

Other family doctors in Martinez

Clinicians with the same Medicare primary specialty in Martinez, CA — not a recommendation.

All family doctors in Martinez →

Clinician information

CredentialMD
Medical schoolUniversity Of California, San Francisco School Of Medicine
Graduation year2002 (24 years since medical school)
Gender (as listed)Female
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1073551719
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians