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

William Castro Jr., MD

Individual provider Family Medicine Physician · NPI 1366607848

William Castro Jr., MD is a Family Medicine Physician in Huntington Beach, California. Licensed in California. Registered with an NPI since 2008.

Licensed in
CA
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

8041 Newman Ave
Huntington Beach, CA 92647-7034
Phone: (714) 500-0228
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence A119270 (CA)

Record details

NPI number1366607848
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 23, 2008
Last updated in NPPESOctober 10, 2013

Other providers in Huntington Beach