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

Alexander F Castellanos MD Inc

Organization Family Medicine Physician · NPI 1831260520

Alexander F Castellanos MD Inc is a Family Medicine Physician in Templeton, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

699 S Main St Ste A
Templeton, CA 93465-5103
Phone: (805) 434-1804
Fax: (805) 434-1855
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence G37303 (CA)

Record details

NPI number1831260520
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Alexander Castellanos — President · (805) 434-1804
Other names Alexander F Castellanos Md; Alexander F Castellanos Md
NPI enumeratedNovember 13, 2006
Last updated in NPPESFebruary 5, 2020
Certification dateFebruary 5, 2020
Mailing address699 S Main St, Ste A, Templeton, CA 93465-5103

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