Doctor profile · Federal record
Dr. An-Yu Chen, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Lexington, KY
- NPI 1992731269
- Accepts Medicare
- MIPS 81.3 / 100 · 2023
- 41 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1225 S.Broadway, Suite 201
Lexington, KY 40504
(859) 258-4950
fax (859) 258-4618 - Additional location
-
858 Eastern Byp
Richmond, KY 404752512 - Mailing address
-
1225 S Broadway Ste 201
Lexington, KY 405042701
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- September 10, 2025
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Kentucky #36512
- Medicaid
- KY #64033384
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1992731269. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
900
Distinct HCPCS
10
Medicare allowed
$113,363
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45380 |
Biopsy of large bowel using a flexible endoscope | 166 | 165 | $91 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 150 | 150 | $164 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 126 | 126 | $239 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 115 | 114 | $96 | |
43450 |
Dilation of esophagus | 87 | 85 | $38 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 78 | 62 | $83 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 60 | 59 | $95 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 37 | 31 | $116 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 29 | 29 | $171 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 19 | 18 | $154 |
In context: peer comparison
Among 20 peers in Lexington Gastroenterology Physician, average services per provider: 80. This provider delivers 11× the peer median.Open Payments
Industry payments received
All-time total
$5,310
Transactions
159
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 46 | $1,330.40 | |
| Ardelyx, INC. | 2 | $1,017.44 | |
| Phathom Pharmaceuticals, INC. | 13 | $463.86 | |
| Janssen Biotech, INC. | 18 | $444.66 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 17 | $259.17 | |
| Pfizer INC. | 14 | $237.10 | |
| Qol Medical, LLC | 9 | $194.42 | |
| Lilly USA, LLC | 7 | $194.14 | |
| Evoke Pharma, INC. | 6 | $187.50 | |
| Genzyme Corporation | 5 | $119.31 | |
| Merck Sharp & Dohme LLC | 5 | $99.31 | |
| Ironwood Pharmaceuticals, INC | 5 | $92.21 | |
| Intercept Pharmaceuticals, INC. | 5 | $91.19 | |
| Takeda Pharmaceuticals U.S.A., INC. | 4 | $83.80 | |
| Gilead Sciences, INC. | 3 | $70.40 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,078
Patients
742
Total drug cost
$226,139
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 492 | 479 | $8,747 |
| Colestipol Hcl | Generic | 85 | 29 | $10,887 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 78 | 77 | $6,076 |
| Omeprazole | Generic | 56 | 25 | $558 |
| Peg-3350 and Electrolytes (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 51 | 51 | $929 |
| Alosetron Hcl | Generic | 44 | 0 | $72,914 |
| Pantoprazole Sodium | Generic | 43 | 15 | $838 |
| Linzess (Linaclotide) | Brand | 37 | 0 | $30,768 |
| Rabeprazole Sodium | Generic | 37 | 16 | $1,724 |
| Lorazepam | Generic | 28 | 0 | $219 |
Frequently asked questions
What is Dr. An-Yu Chen's medical specialty?
Dr. An-Yu Chen practices Gastroenterology Physician in Lexington, KY.
Where does Dr. An-Yu Chen practice?
Dr. An-Yu Chen practices at 1225 S.Broadway, Lexington, KY 40504. Office phone: 8592584950.
What is Dr. An-Yu Chen's NPI?
Dr. An-Yu Chen's National Provider Identifier (NPI) is 1992731269, issued by NPPES.
Does Dr. An-Yu Chen accept Medicare assignment?
Yes. Dr. An-Yu Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. An-Yu Chen commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Colorectal cancer screening; colonoscopy on individual at high risk (HCPCS G0105); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385). Source: CMS Medicare Physician & Other Practitioners file.