Mark Adam Brown, MD
NPI 1790814820ActiveIndividual· Internal Medicine· Kalamazoo, MI
Internal Medicine (MD) with Osh Mi Physicians Group, PC, practicing in Kalamazoo, Michigan. Their prescriptions cost Medicare Part D more than their services did: $870,336 for 6,701 claims, against $3,056 paid for services in 2024. Pfizer Inc. reported $17.74 in payments in 2025, mostly food and beverage. Lists Bronson Methodist Hospital as a hospital affiliation.
Overview
| NPI | 1790814820 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 5, 2007 |
| Last updated in NPPES | Jun 26, 2024 |
| Certified by provider | Jun 26, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 4301082967 | 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 - Internal Medicine (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 25 |
|---|---|
| Services billed | 49 across 9 procedure codes |
| Paid by Medicare | $3,056 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,701 · 7,039 30-day fills |
|---|---|
| Patients | 495 |
| Total drug cost | $870,336 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Osh Mi Physicians Group, PCRaleigh, NC · 157 clinicians
Hospital affiliation
- Bronson Methodist HospitalKalamazoo, MI
Industry payments (Open Payments)
- 2025$17.74 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $17.74 | 1 |
What the 2025 payments were for
- Food and Beverage$17.74 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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