Provider Profile
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License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
4400 ALMA AVE
Castro Valley, CA 94546
Cynthia Contreras is a medical trainee in Castro Valley, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Student in an Organized Health Care Education Program”.
NPI registry
Cynthia Contreras is listed at 4400 Alma Ave, Castro Valley, CA 94546. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (510) 537-3000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Cynthia Contreras's National Provider Identifier is 1366358921. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Not yet. This profile is built from public federal data and has not been confirmed by Cynthia Contreras. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.