John Karwowski, MD
NPI 1932123882ActiveIndividual· Surgery, Vascular Surgery· Dayton, OH
Surgery, Vascular Surgery (MD) in Dayton, Ohio, trained at Tufts University School of Medicine (class of 1995). Mostly services rather than prescriptions: Medicare paid $69,425 for 175 patients in 2024, with only 17 Part D claims. Boston Scientific Corporation was the largest of 6 companies reporting payments in 2025, $495.36 in all, mostly food and beverage.
Overview
| NPI | 1932123882 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 26, 2006 |
| Last updated in NPPES | Oct 5, 2026 |
| Certified by provider | Oct 5, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Vascular Surgery Primary | 2086S0129X | D84011 | MD |
| Surgery, Vascular Surgery | 2086S0129X | ME116901 | FL |
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 - Vascular Surgery (DC); Practitioner - Vascular Surgery (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 175 |
|---|---|
| Services billed | 321 across 89 procedure codes |
| Paid by Medicare | $69,425 |
Part D prescriptions in 2024
| Prescriptions (claims) | 17 · 29 30-day fills |
|---|---|
| Total drug cost | $1,033 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | Tufts University School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Vascular Surgery |
| Telehealth | Offers telehealth |
Medical group
- University of Maryland Surgical Associates PABaltimore, MD · 93 clinicians
Hospital affiliations
- University of Maryland Medical CenterBaltimore, MD
- University of MD Medical Center Midtown CampusBaltimore, MD
- University of MD Shore Medical Center at EastonEaston, MD
Industry payments (Open Payments)
- 2025$495.36 · 9 payments from 6 companies
- 2024$105.03 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $182.83 | 4 |
| Baxter Healthcare | $147.83 | 1 |
| Becton, Dickinson and Company | $73.29 | 1 |
| Terumo Medical Corporation | $46.14 | 1 |
| Smith+nephew, Inc. | $24.27 | 1 |
What the 2025 payments were for
- Food and Beverage$495.36 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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