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

Individual provider Family Medicine Physician · NPI 1851582324

Gustavo Casillas, MD is a Family Medicine Physician in El Monte, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
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

10418 Valley Blvd # B
El Monte, CA 91731-3600
Phone: (626) 453-8466
Fax: (626) 453-8465
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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 A102761 (CA)

Record details

NPI number1851582324
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 8, 2007
Last updated in NPPESNovember 9, 2011

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