Ryan J. Mattison, MD
NPI 1538184825ActiveIndividual· Internal Medicine, Hematology & Oncology· Madison, WI
Internal Medicine, Hematology & Oncology (MD) in Madison, Wisconsin, trained at University of Iowa, Rj & L Carver College of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $3,001,298 for 991 claims, against $35,949 paid for services in 2024. Jazz Pharmaceuticals Inc. was the largest of 2 companies reporting payments in 2025, $4,030 in all, mostly consulting fees.
Overview
| NPI | 1538184825 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 13, 2006 |
| Last updated in NPPES | Feb 1, 2021 |
| Certified by provider | Feb 1, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 52901 | WI |
| Internal Medicine, Hematology | 207RH0000X | 52901 | WI |
| Internal Medicine, Medical Oncology | 207RX0202X | 52901 | 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 - Hematopoietic Cell Transplantation and Cellular Therapy (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 174 |
|---|---|
| Services billed | 822 across 24 procedure codes |
| Paid by Medicare | $35,949 |
Part D prescriptions in 2024
| Prescriptions (claims) | 991 · 1,377 30-day fills |
|---|---|
| Patients | 95 |
| Total drug cost | $3,001,298 |
| Generic share | 74% of claims |
Education and affiliations
| Medical school | University of Iowa, Rj & L Carver College of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Hematopoietic Cell Transplantation And Cellular Therapy |
| Secondary specialties | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- University of Wisconsin Medical Foundation IncMadison, WI · 2,553 clinicians
Hospital affiliations
- Unitypoint Health - MeriterMadison, WI
- University of Wi Hospitals & Clinics AuthorityMadison, WI
- Uw HealthRockford, IL
Industry payments (Open Payments)
- 2025$4,030 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Jazz Pharmaceuticals Inc. | $2,930 | 1 |
| Deciphera Pharmaceuticals Inc. | $1,100 | 1 |
What the 2025 payments were for
- Consulting Fee$2,930 · 1 payment
- Honoraria$1,100 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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