Ryan L. Holzwarth, MD
NPI 1437102324ActiveIndividual· Dermatology· Chippewa Falls, WI
Dermatology (MD) in Chippewa Falls, Wisconsin, trained at University of North Dakota School of Medicine (class of 2002). 758 Medicare patients in 2024, $390,426 paid; nearly all of their 1,246 Part D prescriptions were generic (91%). Boston Scientific Corporation reported $20.59 in payments in 2024, mostly food and beverage.
Overview
| NPI | 1437102324 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 19, 2006 |
| Last updated in NPPES | Sep 18, 2026 |
| Certified by provider | Sep 18, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 74824 | WI |
| Dermatology | 207N00000X | 10214 | ND |
| Dermatology | 207N00000X | 64615 | MN |
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 - Dermatology (MN); Practitioner - Dermatology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 758 |
|---|---|
| Services billed | 4,940 across 79 procedure codes |
| Paid by Medicare | $390,426 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,246 · 1,384 30-day fills |
|---|---|
| Patients | 515 |
| Total drug cost | $503,343 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of North Dakota School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Dermatology |
Medical groups
- Oakleaf Clinics IncRice Lake, WI · 103 clinicians
- Tareen Dermatology PAHudson, WI · 43 clinicians
Industry payments (Open Payments)
- 2024$20.59 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $20.59 | 1 |
What the 2024 payments were for
- Food and Beverage$20.59 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Dermatology providers in Chippewa Falls
- 1639913973
- 1790094704