Doctor profile · Federal record
Dr. Lillian Choi, MD
Gastroenterology Physician (CMS: Gastroenterology) · Gastroenterology Physician · Merced, CA
- NPI 1790769818
- Accepts Medicare
- 28 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
360 E Yosemite Ave Ste 300
Merced, CA 953408201
(209) 720-7183
fax (209) 720-7371 - Additional location
-
1083 Los Palos Dr
Salinas, CA 939013901
(831) 771-1456
fax (831) 757-4070 - Additional location
-
7000 Boulder Ave
Highland, CA 923463348
(909) 862-1191
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- March 24, 2022
- Year of graduation
- 1998 — 28 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- California #A70839 · Arizona #30991
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1790769818. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
190
Distinct HCPCS
5
Medicare allowed
$35,349
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 72 | 51 | $183 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 57 | 57 | $223 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 29 | 29 | $116 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 17 | 17 | $250 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 15 | 15 | $124 |
In context: peer comparison
Among 1 peers in Merced Gastroenterology Physician, average services per provider: 38. This provider delivers 5.0× the peer median.Open Payments
Industry payments received
All-time total
$134
Transactions
6
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 2 | $42.11 | |
| Janssen Biotech, INC. | 1 | $31.11 | |
| Ardelyx, INC. | 1 | $22.79 | |
| Ironwood Pharmaceuticals, INC | 1 | $20.57 | |
| Abbvie INC. | 1 | $17.71 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
55
Patients
32
Total drug cost
$815
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 35 | 32 | $547 |
| Omeprazole | Generic | 20 | 0 | $268 |
Frequently asked questions
What is Dr. Lillian Choi's medical specialty?
Dr. Lillian Choi practices Gastroenterology Physician in Merced, CA.
Where does Dr. Lillian Choi practice?
Dr. Lillian Choi practices at 360 E Yosemite Ave Ste 300, Merced, CA 953408201. Office phone: 2097207183.
What is Dr. Lillian Choi's NPI?
Dr. Lillian Choi's National Provider Identifier (NPI) is 1790769818, issued by NPPES.
Does Dr. Lillian Choi accept Medicare assignment?
Yes. Dr. Lillian Choi accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Lillian Choi commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); New patient office or other outpatient visit (HCPCS 99205); Biopsy of large bowel using a flexible endoscope (HCPCS 45380). Source: CMS Medicare Physician & Other Practitioners file.