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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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
Mailing addressPo Box 1990, Claremont, CA 91711-8990

Other providers in Claremont