Lynn E. Hahnfeld, MD
NPI 1861431769ActiveIndividual· Urology· Madison, WI
Urology (MD) in Madison, Wisconsin, trained at Rush Medical College of Rush University (class of 1994). 565 Medicare patients in 2024, $151,666 paid; nearly all of their 431 Part D prescriptions were generic (97%). Calyxo, Inc. reported $179.31 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1861431769 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 6, 2006 |
| Last updated in NPPES | Nov 18, 2020 |
| Certified by provider | Nov 18, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | 36940-020 | 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 - Urology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 565 |
|---|---|
| Services billed | 2,285 across 66 procedure codes |
| Paid by Medicare | $151,666 |
Part D prescriptions in 2024
| Prescriptions (claims) | 431 · 678 30-day fills |
|---|---|
| Patients | 244 |
| Total drug cost | $16,732 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | Rush Medical College of Rush University |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Urology |
| Telehealth | Offers telehealth |
Medical group
- Dean Health Systems IncSun Prairie, WI · 1,159 clinicians
Hospital affiliations
- Aspirus Divine Savior HospitalPortage, WI
- Columbus Community HospitalColumbus, WI
- Sauk Prairie HospitalPrairie Du Sac, WI
- Ssm Health St Clare Hospital - BarabooBaraboo, WI
- Ssm Health St Mary's Hospital - MadisonMadison, WI
Industry payments (Open Payments)
- 2025$179.31 · 1 payment from 1 company
- 2024$25.32 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calyxo, Inc. | $179.31 | 1 |
What the 2025 payments were for
- Food and Beverage$179.31 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Urology providers in Madison
- 1083800510
- 1497544654
- 1770010340
- 1124079207
- 1063041044
- 1790740470
- 1629032263
- 1770336265
- 1437890977
- 1144070913
- 1811995319
- 1386087740