Guruprasad D. Naik, MD
NPI 1508966813ActiveIndividual· Internal Medicine, Cardiovascular Disease· Marshfield, WI
Internal Medicine, Cardiovascular Disease (MD) with McHs Hospitals Inc and 1 other group, practicing in Marshfield, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $121,640 for 549 claims, against $48,736 paid for services in 2024. Edwards Lifesciences Corporation was the largest of 3 companies reporting payments in 2025, $166.22 in all, mostly food and beverage. Lists Marshfield Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1508966813 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 25, 2006 |
| Last updated in NPPES | Oct 16, 2020 |
| Certified by provider | Oct 16, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 45969 | WI |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 45969-20 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Interventional Cardiology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 629 |
|---|---|
| Services billed | 1,057 across 69 procedure codes |
| Paid by Medicare | $48,736 |
Part D prescriptions in 2024
| Prescriptions (claims) | 549 · 1,388 30-day fills |
|---|---|
| Patients | 145 |
| Total drug cost | $121,640 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Interventional Cardiology |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
Medical groups
- McHs Hospitals IncMarshfield, WI · 1,197 clinicians
- Mercy Health System CorporationJanesville, WI · 753 clinicians
Hospital affiliations
- Marshfield Medical CenterMarshfield, WI
- Mercy Health System CorpJanesville, WI
- Mercy Walworth Hospital & Medical CenterLake Geneva, WI
Industry payments (Open Payments)
- 2025$166.22 · 3 payments from 3 companies
- 2024$17.37 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Edwards Lifesciences Corporation | $91.23 | 1 |
| Abiomed | $47.03 | 1 |
| Abbott Laboratories | $27.96 | 1 |
What the 2025 payments were for
- Food and Beverage$166.22 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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