Quick answers
- Which hospitals does Nancy Han work at?
- Medicare's official clinician data lists Nancy Han at 1 hospital: Memorialcare Orange Coast Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nancy Han see patients?
- Medicare's clinician data lists 1 practice location in Fountain Valley, CA. Call before your visit to confirm the address.
- What is Nancy Han's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Nancy Han accept Medicare assignment?
- Yes. Medicare's clinician data says Nancy Han accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Nancy Han offer telehealth?
- Medicare's clinician data says Nancy Han offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Nancy Han?
- (657) 241-9090, as listed in official Medicare / NPI Registry data.
- What is Nancy Han's NPI number?
- 1609055300. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nancy Han works
Medicare's Facility Affiliation Data lists Nancy Han at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorialcare Orange Coast Medical CenterFountain Valley, CA · Acute Care Hospital · CCN 050678
Practice locations
Addresses where Nancy Han is enrolled with Medicare (CMS data updated 2026-10-02).
- 18035 Brookhurst St, Suite 2100Fountain Valley, CA 92708 (657) 241‑9090
Group practices
Medicare enrollment lists Nancy Han as a member of this group (CMS data updated 2026-10-02).
- Memorialcare Medical Foundation566 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Fountain Valley
Clinicians with the same Medicare primary specialty in Fountain Valley, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Ohio Medical University |
| Graduation year | 2005 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1609055300 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians