Mark L. Thayer, MD
NPI 1568424778ActiveIndividual· Surgery· Grantsburg, WI
Surgery (MD) in Grantsburg, Wisconsin, licensed in WI and MN, with an NPI issued in April 2006. Enrolled in Medicare as practitioner - general surgery and practitioner - emergency medicine. Sanofi Pasteur Inc. reported $31.40 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1568424778 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 4, 2006 |
| Last updated in NPPES | Jul 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 32528 | WI |
| Emergency Medicine | 207P00000X | 32528 | WI |
| Surgery | 208600000X | 31570 | MN |
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 (MN); Practitioner - Emergency Medicine (WI) |
|---|
Industry payments (Open Payments)
- 2025$31.40 · 1 payment from 1 company
- 2024$15.46 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sanofi Pasteur Inc. | $31.40 | 1 |
What the 2025 payments were for
- Food and Beverage$31.40 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records