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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. ALEX AREJOLA ZIGA MD
NPI 1710939640
Psychiatry & Neurology - Psychiatry in Napa, CA

Active since May 17, 2006
2100 NAPA VALLEJO HIGHWAY, NAPA, CA 94558(707) 253-5000(707) 253-5513 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Alex Arejola Ziga Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ALEX AREJOLA ZIGA MD (NPI 1710939640) is an individual psychiatry provider in Napa, California, licensed in California (C50508) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1710939640
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. ALEX AREJOLA ZIGACredential: MD
Location Address2100 NAPA VALLEJO HIGHWAYNapa, CA 94558-6293
Mailing Address1600 9th St, Room 205 Mailstop 2 3Sacramento, CA 95814-6414 · (916) 654-2431 · Fax (916) 654-3186
Phone(707) 253-5000
Fax(707) 253-5513
Sole ProprietorNo
Enumeration DateMay 17, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1710939640 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · C50508
Definition
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 laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
2100 NAPA VALLEJO HIGHWAY, Napa, CA 94558
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. KENNETH ROBERT LAKRITZ PHD
Psychologist (Clinical)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
HOWARD MATTHEW EISENSTARK MD
Psychiatry & Neurology (Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
MARGARET LEFTWICH MILLER MD
Psychiatry & Neurology (Forensic Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
CRISTIAN G MATEESCU MD
Psychiatry & Neurology (Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
DR. KAREN ELIZABETH PHILLIPS PHD
Psychologist (Clinical)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
MS. MICHELE LEE MCCOLM PHD
Psychologist (Clinical)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
AHMED M HAGGAG MD
Psychiatry & Neurology (Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000
AMARPREET SINGH
Psychiatry & Neurology (Psychiatry)
2100 NAPA VALLEJO HIGHWAY
NAPA, CA 94558
Napa County (707) 253-5000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alex Ziga's NPI number?

The NPI number for Alex Ziga is 1710939640. It was assigned to this individual provider in the NPPES registry on May 17, 2006.

Where is Alex Ziga located?

Alex Ziga practices at 2100 Napa Vallejo Highway, Napa, CA 94558. The listed phone number is (707) 253-5000.

What is Alex Ziga's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for Alex Ziga was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.