Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Maria C Quan, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1043281405

Maria C Quan, MD is an Obstetrics/Gynecology in San Ramon, California. Qualified in 1989, 37 years ago. Practices with Vista Community Clinic, a 44-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in California and Washington.

Years since qualifying
37
Licensed in
CA, WA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

11030 Bollinger Canyon Rd Ste 200
San Ramon, CA 94582-4826
Phone: (925) 263-5583
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 20642 John Dr, Castro Valley, CA 94546-5103 — (510) 581-2559
  • 1000 Vale Terrace Dr, Vista, CA 92084-5218 — (760) 631-5000

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence C143703 (CA)
Obstetrics & Gynecology Physician Taxonomy 207V00000X · Licence MD00037841 (WA)

Record details

NPI number1043281405
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 1, 2006
Last updated in NPPESMay 18, 2026
Certification dateMay 18, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Group practice Vista Community Clinic — 44 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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