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

Individual provider Psychiatry Physician · NPI 1982734356

Dr. Donald Horowitz, MD is a Psychiatry Physician in Claremont, 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

480 N Indian Hill Blvd Ste A-1
Claremont, CA 91711-4615
Phone: (909) 625-5509
Fax: (909) 625-5508
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence A22814 (CA)

Record details

NPI number1982734356
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 6, 2007
Last updated in NPPESMarch 26, 2014

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