Quick answers
- Does Thomas G. Fenske accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas G. Fenske accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Thomas G. Fenske see?
- In 2024, CMS data shows 477 Original Medicare patients and 1,213 services for Thomas G. Fenske. This counts Original Medicare only and measures volume, not quality.
- What is Thomas G. Fenske's NPI number?
- 1912998576. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Thomas G. Fenske, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 477 |
|---|---|
| Services billed to Medicare | 1,213 |
| Different services or procedures | 44 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)199 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)168 services
- Anticoagulant management of patient taking warfarin (93793)160 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)124 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)117 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease61%
- Arthritis50%
- Heart failure38%
- Diabetes35%
Hospitals where Thomas G. Fenske works
Medicare's Facility Affiliation Data lists Thomas G. Fenske at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Ascension All Saints HospitalRacine, WI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 520096
- Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520051
- Ascension SE Wisconsin HospitalMilwaukee, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520136
- Ascension St Francis HospitalMilwaukee, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520078
- Midwest Orthopedic Specialty HospitalFranklin, WI · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 520205
Practice locations
Addresses where Thomas G. Fenske is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 10101 S 27th StFranklin, WI 53132 (414) 325‑4700
- 13950 W Capitol DrBrookfield, WI 53005 (414) 302‑5400
- 201 N Mayfair RdWauwatosa, WI 53226
- 3237 S 16th StMilwaukee, WI 53215 (414) 647‑5069
- 3237 S 16th St, Suite 210Milwaukee, WI 53215 (855) 476‑3428
Group practices
Medicare enrollment lists Thomas G. Fenske as a member of this group (CMS data updated October 2, 2026).
- Ascension Medical Group-Southeast Wisconsin Inc545 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Wisconsin →
Other cardiologists in Franklin
Clinicians with the same Medicare primary specialty in Franklin, WI — not a recommendation.
Other clinicians in Ascension Medical Group-Southeast Wisconsin Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912998576 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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