Kevin Sellery Gregg
NPI 1013105220ActiveIndividual· Internal Medicine, Infectious Disease· Madison, WI
Internal Medicine, Infectious Disease with Regents of the University of Michigan and 1 other group, practicing in Madison, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $790,343 for 423 claims, against $24,325 paid for services in 2024. Lists University of Michigan Health System and 1 other hospital as hospital affiliations.
Overview
| NPI | 1013105220 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Oct 12, 2007 |
| Last updated in NPPES | May 28, 2026 |
| Certified by provider | May 28, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 4301098017 | MI |
| Internal Medicine | 207R00000X | 036.117546 | IL |
| Internal Medicine | 207R00000X | 4301098017 | 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 - Infectious Disease (MI); Practitioner - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 155 |
|---|---|
| Services billed | 318 across 23 procedure codes |
| Paid by Medicare | $24,325 |
Part D prescriptions in 2024
| Prescriptions (claims) | 423 · 538 30-day fills |
|---|---|
| Patients | 66 |
| Total drug cost | $790,343 |
| Generic share | 55% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Infectious Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Regents of the University of MichiganAnn Arbor, MI · 3,346 clinicians
- University of Wisconsin Medical Foundation IncMadison, WI · 2,553 clinicians
Hospital affiliations
- University of Michigan Health SystemAnn Arbor, MI
- University of Wi Hospitals & Clinics AuthorityMadison, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other infectious disease specialists in Madison
- 1154398857
- 1265490536
- 1578520706
- 1760443121
- 1790002913
- 1609403138
- 1003170671
- 1033154356
- 1053639823
- 1073975728
- 1083349823
- 1104035864
All 53 infectious disease specialists in Madison · All infectious disease specialists in Wisconsin