Mark E. Obrien, MD
NPI 1841221348ActiveIndividual· Internal Medicine· Benton Harbor, MI
Internal Medicine (MD) in Benton Harbor, Michigan, trained at University of Michigan Medical School (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $482,403 for 9,932 claims, against $1,903 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. reported $16.02 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1841221348 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 5, 2006 |
| Last updated in NPPES | Jan 7, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 4301080677 | MI |
| Pediatrics | 208000000X | 4301080677 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 93 |
|---|---|
| Services billed | 271 across 12 procedure codes |
| Paid by Medicare | $1,903 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,932 · 16,492 30-day fills |
|---|---|
| Patients | 638 |
| Total drug cost | $482,403 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of Michigan Medical School |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pediatric Medicine |
Medical group
- Intercare Community Health NetworkHolland, MI · 18 clinicians
Hospital affiliation
- Lakeland Hospital, St JosephSt Joseph, MI
Other facilities
- Corewell Health Lakeland Hospitals St Joseph HospitalHome health agency · Benton Harbor, MI
Industry payments (Open Payments)
- 2025$16.02 · 1 payment from 1 company
- 2024$39.98 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $16.02 | 1 |
What the 2025 payments were for
- Food and Beverage$16.02 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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