David M. Letzer, MD
NPI 1255382529ActiveIndividual· Internal Medicine, Infectious Disease· Brookfield, WI
Internal Medicine, Infectious Disease (MD) in Brookfield, Wisconsin, trained at Michigan State University College of Osteopathic Medicine (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $983,107 for 1,316 claims, against $158,918 paid for services in 2024. Astellas Pharma US Inc was the largest of 9 companies reporting payments in 2025, $622.50 in all, mostly food and beverage.
Overview
| NPI | 1255382529 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 12, 2006 |
| Last updated in NPPES | Jan 23, 2025 |
| Certified by provider | Jan 23, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 30311-021 | 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 | 277 |
|---|---|
| Services billed | 21,183 across 25 procedure codes |
| Paid by Medicare | $158,918 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,316 · 1,758 30-day fills |
|---|---|
| Patients | 247 |
| Total drug cost | $983,107 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Michigan State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Infectious Disease |
| Telehealth | Offers telehealth |
Medical groups
- Froedtert Andthe Medical College of Wisconsin Community Physicians IncWauwatosa, WI · 1,285 clinicians
- 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
- Waukesha Memorial HospitalWaukesha, WI
Other facilities
- Aurora at HomeHome health agency · Milwaukee, WI
Industry payments (Open Payments)
- 2025$622.50 · 33 payments from 9 companies
- 2024$499.37 · 30 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $204.19 | 4 |
| Abbvie Inc. | $200.59 | 19 |
| Gilead Sciences, Inc. | $47.42 | 2 |
| Viiv Healthcare Company | $45.98 | 2 |
| Shionogi Inc | $44.58 | 2 |
What the 2025 payments were for
- Food and Beverage$462.56 · 31 payments
- Education$159.94 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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