William John Blosky, M.D.
NPI 1740506195ActiveIndividual· Internal Medicine, Gastroenterology· Milwaukee, WI
Internal Medicine, Gastroenterology (M.D.) in Milwaukee, Wisconsin, trained at Indiana University School of Medicine (class of 2010). Their prescriptions cost Medicare Part D more than their services did: $379,608 for 1,625 claims, against $52,705 paid for services in 2024. Pfizer Inc. reported $30.40 in payments in 2024, mostly education.
Overview
| NPI | 1740506195 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 9, 2010 |
| Last updated in NPPES | Jan 26, 2026 |
| Certified by provider | Jan 26, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 65262-20 | WI |
| Internal Medicine | 207R00000X | 121652 | OH |
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 - Gastroenterology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 371 |
|---|---|
| Services billed | 575 across 37 procedure codes |
| Paid by Medicare | $52,705 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,625 · 2,894 30-day fills |
|---|---|
| Patients | 679 |
| Total drug cost | $379,608 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Indiana University School of Medicine |
|---|---|
| Graduation year | 2010 |
| Medicare specialty | Gastroenterology |
Medical groups
- Gi Associates LLCMilwaukee, WI · 55 clinicians
- Gastroenterology Specialists SCWauwatosa, WI · 30 clinicians
- Milwaukee Gi Specialists SCWauwatosa, WI · 15 clinicians
Hospital affiliations
- Oconomowoc Memorial HospitalOconomowoc, WI
- Waukesha Memorial HospitalWaukesha, WI
Industry payments (Open Payments)
- 2024$30.40 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $30.40 | 1 |
What the 2024 payments were for
- Education$30.40 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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