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

Dr. Nancy Jeong-Sun Han, MD

Individual provider Gastroenterology Physician · NPI 1609055300

Dr. Nancy Jeong-Sun Han, MD is a Gastroenterology in Fountain Valley, California. Graduated from Ohio Medical University in 2005, 21 years ago. Practices with Memorialcare Medical Foundation, a 562-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
21
Trained at
Ohio Medical University
Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

18035 Brookhurst St Ste 2100
Fountain Valley, CA 92708-6738
Phone: (657) 241-9090
Fax: (714) 665-4603
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence A99261 (CA)

Record details

NPI number1609055300
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 30, 2007
Last updated in NPPESFebruary 3, 2023
Certification dateJanuary 12, 2023

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOHIO MEDICAL UNIVERSITY
Graduated 2005 (21 years in practice)
Group practice Memorialcare Medical Foundation — 562 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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