Quick answers
- Does Lisa A. Ziemann accept Medicare assignment?
- Yes. Medicare's clinician data says Lisa A. Ziemann 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 Lisa A. Ziemann see?
- In 2024, CMS data shows 195 Original Medicare patients and 196 services for Lisa A. Ziemann. This counts Original Medicare only and measures volume, not quality.
- What is Lisa A. Ziemann's NPI number?
- 1215911243. 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 Lisa A. Ziemann, 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 | 195 |
|---|---|
| Services billed to Medicare | 196 |
| Different services or procedures | 51 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Anesthesia for other procedure on large bowel using an endoscope (00811)25 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)24 services
- Anesthesia for other closed procedure on chest (00520)13 services
- Anesthesia for x-ray or radiation therapy (01922)11 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 cholesterol75%
- High blood pressure73%
- Arthritis51%
- Atrial fibrillation36%
- Ischemic heart disease34%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)30%
Hospitals where Lisa A. Ziemann works
Medicare's Facility Affiliation Data lists Lisa A. Ziemann 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.
- Ridgeview Medical CenterWaconia, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240056
Practice locations
Addresses where Lisa A. Ziemann is enrolled with Medicare (CMS data updated October 2, 2026).
- 500 S Maple StWaconia, MN 55387 (763) 559‑3779
Group practices
Medicare enrollment lists Lisa A. Ziemann as a member of this group (CMS data updated October 2, 2026).
- Metropolitan Anesthesia Network LLP515 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Minnesota →
Other nurse anesthetists in Waconia
Clinicians with the same Medicare primary specialty in Waconia, MN — not a recommendation.
Other clinicians in Metropolitan Anesthesia Network LLP
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 1989 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215911243 |
| 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