Sean Michael O'Neill, M.D., PH.D.
NPI 1720421191ActiveIndividual· Surgery· Chelsea, MI
Surgery (M.D., PH.D.) in Chelsea, Michigan, trained at Northwestern University Feinberg Medical School (class of 2013). Mostly services rather than prescriptions: Medicare paid $23,167 for 86 patients in 2024, with only 16 Part D claims. Medtronic, Inc. reported $24.61 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1720421191 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., PH.D. |
| Sole proprietor | No |
| NPI issued | Apr 16, 2013 |
| Last updated in NPPES | Aug 29, 2022 |
| Certified by provider | Aug 29, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 4301505237 | 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 - General Surgery (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 86 |
|---|---|
| Services billed | 132 across 28 procedure codes |
| Paid by Medicare | $23,167 |
Part D prescriptions in 2024
| Prescriptions (claims) | 16 · 27 30-day fills |
|---|---|
| Patients | 12 |
| Total drug cost | $1,175 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | General Surgery |
| Telehealth | Offers telehealth |
Medical group
- Regents of the University of MichiganAnn Arbor, MI · 3,346 clinicians
Hospital affiliations
- Chelsea HospitalChelsea, MI
- Holland HospitalHolland, MI
- University of Michigan Health SystemAnn Arbor, MI
Industry payments (Open Payments)
- 2025$24.61 · 1 payment from 1 company
- 2024$87.28 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $24.61 | 1 |
What the 2025 payments were for
- Food and Beverage$24.61 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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