Doctor profile · Federal record
Dr. Nancy Han, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Fountain Valley, CA
- NPI 1609055300
- Accepts Medicare
- 21 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
18035 Brookhurst St Ste 2100
Fountain Valley, CA 927086738
(657) 241-9090
fax (714) 665-4603
Credentials & registration
- NPI registered
- October 2007 — 19 yrs on file
- Profile last updated
- February 3, 2023
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A99261
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1609055300. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
181
Distinct HCPCS
6
Medicare allowed
$25,896
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99204 |
New patient office or other outpatient visit, 45-59 minutes | 51 | 51 | $179 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 37 | 35 | $100 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 34 | 34 | $97 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 27 | 26 | $264 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 19 | 17 | $135 | |
36415 |
Insertion of needle into vein for collection of blood sample | 13 | 12 | $6 |
In context: peer comparison
Among 3 peers in Fountain Valley Gastroenterology Physician, average services per provider: 45. This provider delivers 4.0× the peer median.Open Payments
Industry payments received
All-time total
$392
Transactions
16
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 13 | $213.33 | |
| Boston Scientific Corporation | 1 | $103.08 | |
| Medtronic, INC. | 1 | $47.01 | |
| Ardelyx, INC. | 1 | $28.17 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
390
Patients
278
Total drug cost
$11,442
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 126 | 118 | $1,995 |
| Pantoprazole Sodium | Generic | 101 | 37 | $1,229 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 99 | 98 | $6,902 |
| Omeprazole | Generic | 46 | 25 | $639 |
| Lactulose | Generic | 18 | 0 | $677 |
Hospital affiliations
Frequently asked questions
What is Dr. Nancy Han's medical specialty?
Dr. Nancy Han practices Gastroenterology Physician in Fountain Valley, CA.
Where does Dr. Nancy Han practice?
Dr. Nancy Han practices at 18035 Brookhurst St Ste 2100, Fountain Valley, CA 927086738. Office phone: 6572419090.
What is Dr. Nancy Han's NPI?
Dr. Nancy Han's National Provider Identifier (NPI) is 1609055300, issued by NPPES.
Does Dr. Nancy Han accept Medicare assignment?
Yes. Dr. Nancy Han accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nancy Han commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99204); Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.