Jeffrey Alan Kowalski, MD
NPI 1811169550ActiveIndividual· Family Medicine· Elkhorn, WI
Family Medicine (MD) with Mercy Health System Corporation, practicing in Elkhorn, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $628,315 for 10,151 claims, against $68,420 paid for services in 2024. Lists Mercy Health System Corp and 1 other hospital as hospital affiliations.
Overview
| NPI | 1811169550 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 1, 2008 |
| Last updated in NPPES | Jul 9, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 54448-20 | WI |
| Family Medicine | 207Q00000X | A117482 | CA |
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 - Family Practice (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 299 |
|---|---|
| Services billed | 1,113 across 36 procedure codes |
| Paid by Medicare | $68,420 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,151 · 23,699 30-day fills |
|---|---|
| Patients | 627 |
| Total drug cost | $628,315 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Family Practice |
Medical group
- Mercy Health System CorporationJanesville, WI · 753 clinicians
Hospital affiliations
- Mercy Health System CorpJanesville, WI
- Mercy Walworth Hospital & Medical CenterLake Geneva, WI
Other facilities
- Aurora at HomeHome health agency · Milwaukee, WI
- Mercyhealth at HomeHome health agency · Janesville, WI
- Aurora at HomeHospice · Wauwatosa, WI
- Mercyhealth at HomeHospice · Janesville, WI
- Lakeland Health Care CtrNursing home · Elkhorn, 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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All 21 family medicine physicians in Elkhorn · All family medicine physicians in Wisconsin