Sarah S. Naik, MD
NPI 1891797106ActiveIndividual· Internal Medicine· Onalaska, WI
Internal Medicine (MD) in Onalaska, Wisconsin, trained at University of Wooster Medical Department (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $586,503 for 6,827 claims, against $18,948 paid for services in 2024.
Overview
| NPI | 1891797106 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 1, 2005 |
| Last updated in NPPES | Jun 2, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 40777 | WI |
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 - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 146 |
|---|---|
| Services billed | 450 across 22 procedure codes |
| Paid by Medicare | $18,948 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,827 · 14,950 30-day fills |
|---|---|
| Patients | 397 |
| Total drug cost | $586,503 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of Wooster Medical Department |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Gundersen Lutheran Medical Center IncLa Crosse, WI · 895 clinicians
- Gundersen Clinic LtdOnalaska, WI · 418 clinicians
Hospital affiliation
- Gundersen Lutheran Medical CenterLa Crosse, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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