Quick answers
- Does Ann Mary Ligman-Schliem accept Medicare assignment?
- Yes. Medicare's clinician data says Ann Mary Ligman-Schliem 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 Ann Mary Ligman-Schliem see?
- In 2024, CMS data shows 198 Original Medicare patients and 396 services for Ann Mary Ligman-Schliem. This counts Original Medicare only and measures volume, not quality.
- What is Ann Mary Ligman-Schliem's NPI number?
- 1144862137. 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 Ann Mary Ligman-Schliem, 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 | 198 |
|---|---|
| Services billed to Medicare | 396 |
| Different services or procedures | 26 |
| 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)227 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)37 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)33 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)27 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)22 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 cholesterol71%
- Arthritis43%
- Diabetes26%
- Chronic kidney disease26%
- Ischemic heart disease22%
Hospitals where Ann Mary Ligman-Schliem works
Medicare's Facility Affiliation Data lists Ann Mary Ligman-Schliem 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.
- Mercy Health System CorpJanesville, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520066
- Mercy Walworth Hospital & Medical CenterLake Geneva, WI · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 521357
Practice locations
Addresses where Ann Mary Ligman-Schliem is enrolled with Medicare (CMS data updated October 2, 2026).
- 1038 E Geneva StDelavan, WI 53115 (262) 728‑4301
Group practices
Medicare enrollment lists Ann Mary Ligman-Schliem as a member of this group (CMS data updated October 2, 2026).
- Mercy Health System Corporation753 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Delavan
Clinicians with the same Medicare primary specialty in Delavan, WI — not a recommendation.
Other clinicians in Mercy Health System Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2019 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144862137 |
| 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