Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Catherine Y Han, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1023076221

Catherine Y Han, MD is an Obstetrics/Gynecology in Irvine, California. Graduated from Js Weill Medical College, Cornell University in 1996, 30 years ago. Practices with Hoag Clinic, a 443-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
30
Trained at
Js Weill Medical College, Cornell University
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

16305 Sand Canyon Ave Ste 275
Irvine, CA 92618-3791
Phone: (949) 829-5533
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence A64536 (CA)

Record details

NPI number1023076221
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 4, 2006
Last updated in NPPESFebruary 2, 2026
Certification dateFebruary 2, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolJS WEILL MEDICAL COLLEGE, CORNELL UNIVERSITY
Graduated 1996 (30 years in practice)
Group practice Hoag Clinic — 443 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Irvine