An-Yu Chen, M.D.
NPI 1992731269 · Gastroenterology Physician · Lexington, KY
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
An-Yu Chen, M.D. is a Gastroenterology Physician provider in Lexington, KY (NPI 1992731269).
Provider details
- NPI number
- 1992731269
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 36512 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
916 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 163 | $76 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 130 | $231 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 129 | $165 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 103 | $89 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 75 | $83 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 430 | 410 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 130 | 129 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 110 | 110 |
| Omeprazole | 96 | 37 |
| Colestipol Hcl | 70 | 28 |
| Rabeprazole Sodium | 50 | 18 |
| Linaclotidebrand: Linzess |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$5,310 across 181 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 858 Eastern BypRichmond, KY 40475-2512Phone: (859) 258-4950Fax: (859) 258-4618
Registry dates
- Enumerated
- 2006-06-25
- Last updated
- 2025-09-10
- Certified
- 2025-09-10
Frequently asked questions
- What is An-Yu Chen's NPI number?
- An-Yu Chen's National Provider Identifier (NPI) is 1992731269, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is An-Yu Chen's specialty?
- An-Yu Chen is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is An-Yu Chen located?
- An-Yu Chen's practice location on file with NPPES is 1225 S.broadway, Lexington, KY 40504.
- What is An-Yu Chen's phone number?
- The practice phone number listed in the NPPES registry for An-Yu Chen is (859) 258-4950.
- Does An-Yu Chen accept Medicare?
- An-Yu Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is An-Yu Chen's NPI active?
- Yes — An-Yu Chen's NPI (1992731269) is active in the NPPES registry as of the last update on 2025-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.