Quick answers
- Which hospitals does Thomas J. Ryan work at?
- Medicare's official clinician data lists Thomas J. Ryan at 2 hospitals: Aurora Medical Center and Gundersen Lutheran Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas J. Ryan see patients?
- Medicare's clinician data lists 6 practice locations, including Milwaukee, WI, La Crosse, WI and Wauwatosa, WI. Call before your visit to confirm the address.
- What is Thomas J. Ryan's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Thomas J. Ryan accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas J. 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 Thomas J. Ryan?
- (414) 219-3056, as listed in official Medicare / NPI Registry data.
- What is Thomas J. Ryan's NPI number?
- 1104894443. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas J. Ryan works
Medicare's Facility Affiliation Data lists Thomas J. Ryan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Aurora Medical CenterGrafton, WI · Acute Care Hospital · CCN 520207
- Gundersen Lutheran Medical CenterLa Crosse, WI · Acute Care Hospital · CCN 520087
Practice locations
Addresses where Thomas J. Ryan is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1020 N 12th StMilwaukee, WI 53233 (414) 219‑3056
- 1910 S AveLa Crosse, WI 54601 (608) 782‑7300
- 2999 N Mayfair RdWauwatosa, WI 53222 (414) 479‑7700
- 5900 S Lake DrCudahy, WI 53110 (414) 489‑9000
- 945 N 12th StMilwaukee, WI 53233 (414) 219‑7300
Group practices
Medicare enrollment lists Thomas J. Ryan as a member of these groups (CMS data updated 2026-10-02).
- Aurora Medical Group, Inc.3,813 clinicians in the group
- Gundersen Lutheran Medical Center Inc895 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Milwaukee
Clinicians with the same Medicare primary specialty in Milwaukee, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 1980 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104894443 |
| 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