Catherine Han, MD
NPI 1023076221 · Obstetrics & Gynecology Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Han, MD is a Obstetrics & Gynecology Physician provider in Irvine, CA (NPI 1023076221).
Provider details
- NPI number
- 1023076221
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A64536 (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
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
Mailing address
Registry dates
- Enumerated
- 2006-05-04
- Last updated
- 2026-02-02
- Certified
- 2026-02-02
Frequently asked questions
- What is Catherine Han's NPI number?
- Catherine Han's National Provider Identifier (NPI) is 1023076221, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Han's specialty?
- Catherine Han is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Han located?
- Catherine Han's practice location on file with NPPES is 16305 Sand Canyon Ave Ste 275, Irvine, CA 92618-3791.
- What is Catherine Han's phone number?
- The practice phone number listed in the NPPES registry for Catherine Han is (949) 829-5533.
- Does Catherine Han accept Medicare?
- Catherine Han is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Han's NPI active?
- Yes — Catherine Han's NPI (1023076221) is active in the NPPES registry as of the last update on 2026-02-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.