Brij M. Dewan, M.D.
NPI 1194787861ActiveIndividual· Internal Medicine, Gastroenterology· Kalamazoo, MI
Internal Medicine, Gastroenterology (M.D.) with Ascension Medical Group Promed, practicing in Kalamazoo, Michigan. Their prescriptions cost Medicare Part D more than their services did: $948,750 for 2,277 claims, against $86,431 paid for services in 2024. Ardelyx, Inc. was the largest of 3 companies reporting payments in 2025, $317.67 in all, mostly food and beverage. Lists Borgess Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1194787861 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 6, 2006 |
| Last updated in NPPES | Mar 18, 2021 |
| Certified by provider | Mar 18, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | MI4301043605 | MI |
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 (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 452 |
|---|---|
| Services billed | 1,021 across 47 procedure codes |
| Paid by Medicare | $86,431 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,277 · 3,663 30-day fills |
|---|---|
| Patients | 534 |
| Total drug cost | $948,750 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1974 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Ascension Medical Group PromedKalamazoo, MI · 262 clinicians
Hospital affiliations
- Borgess Medical CenterKalamazoo, MI
- Bronson Battle Creek HospitalBattle Creek, MI
- Bronson Methodist HospitalKalamazoo, MI
- Oaklawn HospitalMarshall, MI
- Three Rivers HealthThree Rivers, MI
Other facilities
- Beacon PlainwellLong-term care hospital · Plainwell, MI
Industry payments (Open Payments)
- 2025$317.67 · 5 payments from 3 companies
- 2024$360.96 · 14 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $111.88 | 1 |
| Janssen Biotech, Inc. | $111.14 | 1 |
| Abbvie Inc. | $94.65 | 3 |
What the 2025 payments were for
- Food and Beverage$317.67 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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