Quick answers
- Which hospitals does Matthew L. Ryan work at?
- Medicare's official clinician data lists Matthew L. Ryan at 5 hospitals: Ascension NE Wisconsin - St Elizabeth Campus, OSF St Francis Hospital and Medical Group, Schoolcraft Memorial Hospital, St Marys Hospital Medical Ctr and St Vincent Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Matthew L. Ryan see patients?
- Medicare's clinician data lists 4 practice locations, including Appleton, WI, Green Bay, WI and Escanaba, MI. Call before your visit to confirm the address.
- What is Matthew L. Ryan's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Matthew L. Ryan accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew L. Ryan 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.
- What is the phone number for Matthew L. Ryan?
- (920) 738-2000, as listed in official Medicare / NPI Registry data.
- What is Matthew L. Ryan's NPI number?
- 1548233612. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Matthew L. Ryan works
Medicare's Facility Affiliation Data lists Matthew L. Ryan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension NE Wisconsin - St Elizabeth CampusAppleton, WI · Acute Care Hospital · CCN 520009
- OSF St Francis Hospital and Medical GroupEscanaba, MI · Critical Access Hospital · CCN 231337
- Schoolcraft Memorial HospitalManistique, MI · Critical Access Hospital · CCN 231303
- St Marys Hospital Medical CtrGreen Bay, WI · Acute Care Hospital · CCN 520097
- St Vincent HospitalGreen Bay, WI · Acute Care Hospital · CCN 520075
Practice locations
Addresses where Matthew L. Ryan is enrolled with Medicare (CMS data updated 2026-10-02).
- 1506 S Oneida StAppleton, WI 54915 (920) 738‑2000
- 2060 Bellevue StGreen Bay, WI 54311 (920) 965‑0606
- 2525 5th Ave SEscanaba, MI 49829 (906) 786‑6047
- 835 S Van Buren StGreen Bay, WI 54301 (920) 433‑0111
Group practices
Medicare enrollment lists Matthew L. Ryan as a member of these groups (CMS data updated 2026-10-02).
- OSF Multi-Specialty Group2,114 clinicians in the group
- St Vincent Hospital-Hospital Sisters-Third Order of St Francis603 clinicians in the group
- Ascension NE Wisconsin, Inc19 clinicians in the group
- Hemophilia Outreach of Wisconsin Inc4 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Appleton
Clinicians with the same Medicare primary specialty in Appleton, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548233612 |
| 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