IndividualActive
Alex Ziga, MD
NPI 1710939640 · Psychiatry Physician · Napa, CA
Alex Ziga, MD is a Psychiatry Physician provider in Napa, CA (NPI 1710939640).
Provider details
- NPI number
- 1710939640
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- C50508 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
2100 Napa Vallejo Highway
Napa, CA 94558-6293
Phone: (707) 253-5000
Fax: (707) 253-5513
Street-level locationGet directions
Mailing address
1600 9th St
Sacramento, CA 95814-6414
Registry dates
- Enumerated
- 2006-05-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is Alex Ziga's NPI number?
- Alex Ziga's National Provider Identifier (NPI) is 1710939640, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alex Ziga's specialty?
- Alex Ziga is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Alex Ziga located?
- Alex Ziga's practice location on file with NPPES is 2100 Napa Vallejo Highway, Napa, CA 94558-6293.
- What is Alex Ziga's phone number?
- The practice phone number listed in the NPPES registry for Alex Ziga is (707) 253-5000.
- Is Alex Ziga's NPI active?
- Yes — Alex Ziga's NPI (1710939640) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.