Paul Thomas Merchant, MD
NPI 1427554153ActiveIndividual· Internal Medicine, Nephrology· La Crosse, WI
Internal Medicine, Nephrology (MD) in La Crosse, Wisconsin, trained at Medical College of Wisconsin (class of 2018). Their prescriptions cost Medicare Part D more than their services did: $39,030 for 289 claims, against $23,109 paid for services in 2024.
Overview
| NPI | 1427554153 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 2, 2018 |
| Last updated in NPPES | Aug 4, 2025 |
| Certified by provider | Aug 4, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 84040-20 | WI |
| Internal Medicine, Nephrology | 207RN0300X | 35.147903 | OH |
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 - Nephrology (IA); Practitioner - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 164 |
|---|---|
| Services billed | 333 across 16 procedure codes |
| Paid by Medicare | $23,109 |
Part D prescriptions in 2024
| Prescriptions (claims) | 289 · 599 30-day fills |
|---|---|
| Patients | 87 |
| Total drug cost | $39,030 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Nephrology |
| Telehealth | Offers telehealth |
Medical groups
- Gundersen Lutheran Medical Center IncLa Crosse, WI · 895 clinicians
- Gundersen Clinic LtdOnalaska, WI · 418 clinicians
Hospital affiliations
- Aspirus Rhinelander HospitalRhinelander, WI
- Gundersen Boscobel Area Hospital and ClinicsBoscobel, WI
- Gundersen Lutheran Medical CenterLa Crosse, WI
- Gundersen St Josephs Hospital and ClinicsHillsboro, WI
- Winona Health ServicesWinona, MN
Other facilities
- Gundersen Lutheran Renal Dialysis - la CrosseDialysis facility · La Crosse, WI
- Gundersen Lutheran Renal Dialysis - OnalaskaDialysis facility · Onalaska, 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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