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Mark Zweifach, MD
NPI 1497803381 · Psychiatry Physician · San Diego, CA
Mark Zweifach, MD is a Psychiatry Physician provider in San Diego, CA (NPI 1497803381).
Provider details
- NPI number
- 1497803381
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G48626 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
4405 Vandever Ave
San Diego, CA 92120-3315
Phone: (619) 528-5000
Street-level locationGet directions
Mailing address
393 E Walnut St
Pasadena, CA 91188-0001
Registry dates
- Enumerated
- 2007-01-08
- Last updated
- 2007-11-29
Frequently asked questions
- What is Mark Zweifach's NPI number?
- Mark Zweifach's National Provider Identifier (NPI) is 1497803381, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Zweifach's specialty?
- Mark Zweifach is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Zweifach located?
- Mark Zweifach's practice location on file with NPPES is 4405 Vandever Ave, San Diego, CA 92120-3315.
- What is Mark Zweifach's phone number?
- The practice phone number listed in the NPPES registry for Mark Zweifach is (619) 528-5000.
- Is Mark Zweifach's NPI active?
- Yes — Mark Zweifach's NPI (1497803381) is active in the NPPES registry as of the last update on 2007-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.