Alexander Spencer Tretinyak, MD
NPI 1073566030ActiveIndividual· Surgery, Vascular Surgery· Appleton, WI
Surgery, Vascular Surgery (MD) in Appleton, Wisconsin, trained at University of Minnesota Medical School (class of 1996). 272 Medicare patients in 2024, $126,200 paid; nearly all of their 525 Part D prescriptions were generic (95%). W. L. Gore & Associates, Inc. was the largest of 6 companies reporting payments in 2025, $1,622 in all, mostly food and beverage.
Overview
| NPI | 1073566030 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 18, 2006 |
| Last updated in NPPES | Jul 16, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Vascular Surgery Primary | 2086S0129X | 60546-20 | WI |
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 - General Surgery (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 272 |
|---|---|
| Services billed | 818 across 112 procedure codes |
| Paid by Medicare | $126,200 |
Part D prescriptions in 2024
| Prescriptions (claims) | 525 · 923 30-day fills |
|---|---|
| Patients | 177 |
| Total drug cost | $20,888 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | University of Minnesota Medical School |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | General Surgery |
| Secondary specialties | Vascular Surgery |
Medical group
- Fox Valley Surgical Associates LtdAppleton, WI · 35 clinicians
Hospital affiliations
- Thedacare Medical Center - Berlin IncBerlin, WI
- Thedacare Medical Center - ShawanoShawano, WI
- Thedacare Medical Center-WaupacaWaupaca, WI
- Thedacare Regional Med Ctr - NeenahNeenah, WI
- Thedacare Regional Medical Center - Appleton IncAppleton, WI
Industry payments (Open Payments)
- 2025$1,622 · 21 payments from 6 companies
- 2024$424.94 · 12 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| W. L. Gore & Associates, Inc. | $1,243 | 13 |
| Boston Scientific Corporation | $258.64 | 4 |
| Smith+nephew, Inc. | $39.77 | 1 |
| Medtronic, Inc. | $34.40 | 1 |
| Lemaitre Vascular, Inc. | $30.85 | 1 |
What the 2025 payments were for
- Food and Beverage$830.83 · 15 payments
- Travel and Lodging$791.05 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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