John Christopher Williams, MD
NPI 1295717668ActiveIndividual· Internal Medicine· Green Bay, WI
Internal Medicine (MD) in Green Bay, Wisconsin, trained at Indiana University School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $369,092 for 10,081 claims, against $32,924 paid for services in 2024. Abbott Laboratories reported $254.94 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1295717668 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 18, 2005 |
| Last updated in NPPES | Nov 21, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 49093-020 | 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 - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 183 |
|---|---|
| Services billed | 846 across 31 procedure codes |
| Paid by Medicare | $32,924 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,081 · 23,338 30-day fills |
|---|---|
| Patients | 686 |
| Total drug cost | $369,092 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Indiana University School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Internal Medicine |
Medical group
- Oneida NationOneida, WI · 35 clinicians
Hospital affiliations
- St Marys Hospital Medical CtrGreen Bay, WI
- St Vincent HospitalGreen Bay, WI
Industry payments (Open Payments)
- 2025$254.94 · 2 payments from 1 company
- 2024$108.75 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $254.94 | 2 |
What the 2025 payments were for
- Food and Beverage$254.94 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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