Quick answers
- Does Tiffany L. Petersen accept Medicare assignment?
- Yes. Medicare's clinician data says Tiffany L. Petersen 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 Tiffany L. Petersen see?
- In 2024, CMS data shows 286 Original Medicare patients and 303 services for Tiffany L. Petersen. This counts Original Medicare only and measures volume, not quality.
- What is Tiffany L. Petersen's NPI number?
- 1861169716. 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 Tiffany L. Petersen, 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 | 286 |
|---|---|
| Services billed to Medicare | 303 |
| Different services or procedures | 39 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Anesthesia for lens surgery (00142)189 services
- Anesthesia for exam of colon using an endoscope (00812)22 services
- Anesthesia for other procedure on large bowel using an endoscope (00811)12 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 cholesterol68%
- High blood pressure67%
- Arthritis34%
- Chronic kidney disease24%
- Diabetes23%
- Ischemic heart disease18%
Hospitals where Tiffany L. Petersen works
Medicare's Facility Affiliation Data lists Tiffany L. Petersen 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.
- Marshfield Medical Center - Eau ClaireEau Claire, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520210
- Mayo Clinic Health System Eau Claire HospitalEau Claire, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520070
- River Falls Area HospitalRiver Falls, WI · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 521349
Practice locations
Addresses where Tiffany L. Petersen is enrolled with Medicare (CMS data updated October 2, 2026).
- 1221 Whipple StEau Claire, WI 54703 (715) 838‑3806
- 1629 E Division StRiver Falls, WI 54022 (715) 307‑6000
- 2116 Craig RdEau Claire, WI 54701 (715) 858‑4500
Group practices
Medicare enrollment lists Tiffany L. Petersen as a member of these groups (CMS data updated October 2, 2026).
- Allina Health System3,842 clinicians in the group
- MCHS Hospitals Inc1,197 clinicians in the group
- Mayo Clinic Health System-Northwest Wisconsin Region Inc802 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Wisconsin →
Other nurse anesthetists in Eau Claire
Clinicians with the same Medicare primary specialty in Eau Claire, WI — not a recommendation.
Other clinicians in Allina Health System
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861169716 |
| 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