Quick answers
- Which hospitals does Thomas J. Saphner work at?
- Medicare's official clinician data lists Thomas J. Saphner at 4 hospitals: Aurora BayCare Medical Ctr, Aurora Medical Center Bay Area, Aurora Medical Center Sheboygan County and Aurora Medical Ctr Manitowoc County. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas J. Saphner see patients?
- Medicare's clinician data lists 5 practice locations, including Milwaukee, WI, Marinette, WI and Two Rivers, WI. Call before your visit to confirm the address.
- What is Thomas J. Saphner's specialty?
- Medicare lists Medical Oncology as the primary specialty.
- Does Thomas J. Saphner accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas J. Saphner 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. Saphner?
- (414) 219-3056, as listed in official Medicare / NPI Registry data.
- What is Thomas J. Saphner's NPI number?
- 1700970894. 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. Saphner works
Medicare's Facility Affiliation Data lists Thomas J. Saphner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Aurora BayCare Medical CtrGreen Bay, WI · Acute Care Hospital · CCN 520193
- Aurora Medical Center Bay AreaMarinette, WI · Acute Care Hospital · CCN 520113
- Aurora Medical Center Sheboygan CountySheboygan, WI · Acute Care Hospital · CCN 520035
- Aurora Medical Ctr Manitowoc CountyTwo Rivers, WI · Acute Care Hospital · CCN 520034
Practice locations
Addresses where Thomas J. Saphner is enrolled with Medicare (CMS data updated 2026-10-02).
- 1020 N 12th StMilwaukee, WI 53233 (414) 219‑3056
- 3003 University DrMarinette, WI 54143 (715) 735‑6621
- 5000 Memorial DrTwo Rivers, WI 54241 (920) 794‑5000
- 5300 Memorial DrTwo Rivers, WI 54241 (920) 793‑7300
- 901 Reed StPlymouth, WI 53073 (920) 893‑1771
Group practices
Medicare enrollment lists Thomas J. Saphner as a member of these groups (CMS data updated 2026-10-02).
- Aurora Medical Group, Inc.3,813 clinicians in the group
- Aurora Health Care Central, Inc.10 clinicians in the group
Specialties
- Medical Oncologyprimary
Other oncologists in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700970894 |
| 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