Sean P. Obrien, MD
NPI 1952368896ActiveIndividual· Surgery, Vascular Surgery· Kalamazoo, MI
Surgery, Vascular Surgery (MD) in Kalamazoo, Michigan, trained at Michigan State University College of Human Medicine (class of 1992). In 2024 Medicare paid $112,198 for 518 patients, and Part D covered 501 of their prescriptions, 69% of them generic. Cook Medical LLC was the largest of 2 companies reporting payments in 2025, $49.78 in all, mostly food and beverage.
Overview
| NPI | 1952368896 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 26, 2006 |
| Last updated in NPPES | Aug 13, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Vascular Surgery Primary | 2086S0129X | SO059838 | MI |
| Surgery | 208600000X | SO059838 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Vascular Surgery (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 518 |
|---|---|
| Services billed | 1,447 across 104 procedure codes |
| Paid by Medicare | $112,198 |
Part D prescriptions in 2024
| Prescriptions (claims) | 501 · 1,049 30-day fills |
|---|---|
| Patients | 166 |
| Total drug cost | $136,037 |
| Generic share | 69% of claims |
Education and affiliations
| Medical school | Michigan State University College of Human Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Vascular Surgery |
| Secondary specialties | General Surgery |
Medical groups
- Ascension Medical Group PromedKalamazoo, MI · 262 clinicians
- Ascension Borgess HospitalKalamazoo, MI · 37 clinicians
Hospital affiliations
- Beacon AlleganAllegan, MI
- Borgess Medical CenterKalamazoo, MI
- Bronson Battle Creek HospitalBattle Creek, MI
- Bronson Methodist HospitalKalamazoo, MI
- Three Rivers HealthThree Rivers, MI
Industry payments (Open Payments)
- 2025$49.78 · 4 payments from 2 companies
- 2024$1,267 · 6 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Cook Medical LLC | $33.78 | 3 |
| Endologix LLC | $16.00 | 1 |
What the 2025 payments were for
- Food and Beverage$49.78 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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