Changjian Chen, MD
NPI 1649223272ActiveIndividual· Internal Medicine, Gastroenterology· Kokomo, IN
Internal Medicine, Gastroenterology (MD) with Community Physicians of Indiana Inc, practicing in Kokomo, Indiana. Their prescriptions cost Medicare Part D more than their services did: $2,030,972 for 2,613 claims, against $109,879 paid for services in 2024. Abbvie Inc. was the largest of 11 companies reporting payments in 2025, $423.01 in all, mostly food and beverage. Lists Ascension St Vincent Kokomo and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1649223272 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 17, 2006 |
| Last updated in NPPES | Aug 30, 2024 |
| Certified by provider | Aug 30, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 01049093A | IN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 647 |
|---|---|
| Services billed | 1,227 across 54 procedure codes |
| Paid by Medicare | $109,879 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,613 · 5,227 30-day fills |
|---|---|
| Patients | 650 |
| Total drug cost | $2,030,972 |
| Generic share | 72% of claims |
Education and affiliations
| Graduation year | 1982 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Community Physicians of Indiana IncIndianapolis, IN · 1,565 clinicians
Hospital affiliations
- Ascension St Vincent KokomoKokomo, IN
- Community Howard Regional Health Inc.Kokomo, IN
- Memorial HospitalLogansport, IN
Industry payments (Open Payments)
- 2025$423.01 · 20 payments from 11 companies
- 2024$231.58 · 10 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $140.01 | 7 |
| Janssen Biotech, Inc. | $66.09 | 2 |
| Regeneron Healthcare Solutions, Inc. | $35.74 | 2 |
| Ardelyx, Inc. | $32.14 | 2 |
| Genzyme Corporation | $28.34 | 1 |
What the 2025 payments were for
- Food and Beverage$423.01 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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