Quick answers
- Which hospitals does Ryan Mattison work at?
- Medicare's official clinician data lists Ryan Mattison at 3 hospitals: UnityPoint Health - Meriter, University of WI Hospitals & Clinics Authority and UW Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ryan Mattison see patients?
- Medicare's clinician data lists 2 practice locations, including Johnson Creek, WI and Madison, WI. Call before your visit to confirm the address.
- What is Ryan Mattison's specialty?
- Medicare lists Hematopoietic Cell Transplantation and Cellular Therapy as the primary specialty, and also Hematology/Oncology.
- Does Ryan Mattison accept Medicare assignment?
- Yes. Medicare's clinician data says Ryan Mattison accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Ryan Mattison offer telehealth?
- Medicare's clinician data says Ryan Mattison offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Ryan Mattison?
- (920) 699-3500, as listed in official Medicare / NPI Registry data.
- What is Ryan Mattison's NPI number?
- 1538184825. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ryan Mattison works
Medicare's Facility Affiliation Data lists Ryan Mattison at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UnityPoint Health - MeriterMadison, WI · Acute Care Hospital · CCN 520089
- University of WI Hospitals & Clinics AuthorityMadison, WI · Acute Care Hospital · CCN 520098
- UW HealthRockford, IL · Acute Care Hospital · CCN 140228
Practice locations
Addresses where Ryan Mattison is enrolled with Medicare (CMS data updated 2026-10-02).
- 250 Doctors CtJohnson Creek, WI 53038 (920) 699‑3500
- 600 Highland AveMadison, WI 53792 (608) 263‑6400
Group practices
Medicare enrollment lists Ryan Mattison as a member of this group (CMS data updated 2026-10-02).
- University of Wisconsin Medical Foundation Inc2,553 clinicians in the group
Specialties
Find other Hematopoietic Cell Transplantation and Cellular Therapy doctors in Wisconsin →
Other cell transplant specialists in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Iowa, Rj & L Carver College Of Medicine |
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1538184825 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians