William D. Timm, MD
NPI 1902856016ActiveIndividual· Internal Medicine, Infectious Disease· Brookfield, WI
Internal Medicine, Infectious Disease (MD) in Brookfield, Wisconsin, trained at Medical College of Wisconsin (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $383,765 for 812 claims, against $126,103 paid for services in 2024. Abbvie Inc. was the largest of 3 companies reporting payments in 2025, $246.27 in all, mostly food and beverage.
Overview
| NPI | 1902856016 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 11, 2006 |
| Last updated in NPPES | Jan 16, 2025 |
| Certified by provider | Jan 16, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 33843-020 | WI |
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 - Infectious Disease (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 248 |
|---|---|
| Services billed | 19,253 across 30 procedure codes |
| Paid by Medicare | $126,103 |
Part D prescriptions in 2024
| Prescriptions (claims) | 812 · 986 30-day fills |
|---|---|
| Patients | 192 |
| Total drug cost | $383,765 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Infectious Disease |
| Telehealth | Offers telehealth |
Medical groups
- Thedacare, IncorporatedWaupaca, WI · 647 clinicians
- Infectious Disease Specialists of Se Wi, SCBrookfield, WI · 12 clinicians
Hospital affiliations
- Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI
- Ascension Se Wisconsin HospitalMilwaukee, WI
- Aurora Medical Center - SummitSummit, WI
- Community Memorial HospitalMenomonee Falls, WI
- Thedacare Regional Med Ctr - NeenahNeenah, WI
Other facilities
- Ascension at HomeHome health agency · Milwaukee, WI
Industry payments (Open Payments)
- 2025$246.27 · 17 payments from 3 companies
- 2024$54.31 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $185.41 | 15 |
| Astellas Pharma US Inc | $33.33 | 1 |
| Insmed, Inc. | $27.53 | 1 |
What the 2025 payments were for
- Food and Beverage$246.27 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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