Helen Zukin-O'Callaghan
NPI 1578144143 · Gynecology Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Zukin-O'Callaghan is a Gynecology Physician provider in San Jose, CA (NPI 1578144143).
Provider details
- NPI number
- 1578144143
- Entity type
- Individual
- Primary specialty
- Gynecology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A199431 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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
Mailing address
Registry dates
- Enumerated
- 2021-04-15
- Last updated
- 2025-08-14
- Certified
- 2025-08-14
Frequently asked questions
- What is Helen Zukin-O'Callaghan's NPI number?
- Helen Zukin-O'Callaghan's National Provider Identifier (NPI) is 1578144143, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Zukin-O'Callaghan's specialty?
- Helen Zukin-O'Callaghan is listed in the NPPES registry with a primary specialty of Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Zukin-O'Callaghan located?
- Helen Zukin-O'Callaghan's practice location on file with NPPES is 751 S Bascom Ave, San Jose, CA 95128-2604.
- What is Helen Zukin-O'Callaghan's phone number?
- The practice phone number listed in the NPPES registry for Helen Zukin-O'Callaghan is (805) 450-3279.
- Does Helen Zukin-O'Callaghan accept Medicare?
- Helen Zukin-O'Callaghan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Zukin-O'Callaghan's NPI active?
- Yes — Helen Zukin-O'Callaghan's NPI (1578144143) is active in the NPPES registry as of the last update on 2025-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.