Individual provider · Type 1 NPI

Alexander Horwitz, MD

Psychiatry Physician · Napa, CA

NPI number 1891317954 Active

Practice location

2100 Napa Vallejo Hwy
Napa, CA 94558-6234

Call (707) 253-5000 Map

Other practice locations

  • 147 N Brent St, Ventura, CA 93003-2854 · (805) 948-5672
  • Hillmont Psychiatric Center, 200 Hillmont Av, Ventura, CA 93003 · (805) 652-6729
  • 10333 El Camino Real, Atascadero, CA 93422-5808 · (805) 468-2000

Specialties and licenses

TaxonomyCodeLicense
Student in an Organized Health Care Education/Training Program 390200000XA181639 (CA)
Psychiatry Physician Primary 2084P0800XA181639 (CA)

Psychiatry Physician: A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic la…

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About NPI 1891317954

Alexander Horwitz, MD's National Provider Identifier is 1891317954, issued on May 12, 2020. The primary taxonomy on file is Psychiatry Physician (2084P0800X), and the practice location is in Napa, CA. The record was last updated on Aug 10, 2025.