Quick answers
- Does Leah S. Wisniewski accept Medicare assignment?
- Yes. Medicare's clinician data says Leah S. Wisniewski 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 Leah S. Wisniewski see?
- In 2024, CMS data shows 249 Original Medicare patients and 592 services for Leah S. Wisniewski. This counts Original Medicare only and measures volume, not quality.
- What is Leah S. Wisniewski's NPI number?
- 1275207409. 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 Leah S. Wisniewski, 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 | 249 |
|---|---|
| Services billed to Medicare | 592 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 68 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)133 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)121 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)88 services
- Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (95251)66 services
- Insertion of needle into vein for collection of blood sample (36415)39 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 cholesterol74%
- High blood pressure73%
- Diabetes68%
- Chronic kidney disease42%
- Arthritis40%
- Osteoporosis40%
Hospitals where Leah S. Wisniewski works
Medicare's Facility Affiliation Data lists Leah S. Wisniewski 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.
- M Health Fairview University of Minnesota Medical CenterMinneapolis, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240080
- University of WI Hospitals & Clinics AuthorityMadison, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520098
Practice locations
Addresses where Leah S. Wisniewski is enrolled with Medicare (CMS data updated October 2, 2026).
- 451 Junction RdMadison, WI 53717 (608) 265‑7700
- 500 Harvard St SEMinneapolis, MN 55455 (612) 672‑7422
- 717 Delaware St SE, Suite 340Minneapolis, MN 55414 (612) 672‑7422
Group practices
Medicare enrollment lists Leah S. Wisniewski as a member of these groups (CMS data updated October 2, 2026).
- University of Wisconsin Medical Foundation Inc2,553 clinicians in the group
- Fairview Express Care1,911 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Madison
Clinicians with the same Medicare primary specialty in Madison, WI — not a recommendation.
Other clinicians in University of Wisconsin Medical Foundation Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2021 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275207409 |
| 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