John F. Herath, MD
NPI 1740286913ActiveIndividual· Internal Medicine· Onalaska, WI
Internal Medicine (MD) in Onalaska, Wisconsin, trained at University of Minnesota Medical School (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $881,030 for 9,589 claims, against $33,207 paid for services in 2024.
Overview
| NPI | 1740286913 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 22, 2005 |
| Last updated in NPPES | Jun 2, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 42729 | 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 | 235 |
|---|---|
| Services billed | 676 across 19 procedure codes |
| Paid by Medicare | $33,207 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,589 · 20,665 30-day fills |
|---|---|
| Patients | 620 |
| Total drug cost | $881,030 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of Minnesota Medical School |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Gundersen Lutheran Medical Center IncLa Crosse, WI · 895 clinicians
Hospital affiliation
- Gundersen Lutheran Medical CenterLa Crosse, WI
Other facilities
- Aveanna Home HealthHome health agency · Rochester, MN
- Aveanna Home HealthHome health agency · La 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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