Cynthia M. Niendorff, MD

Medicare activity in 2024

Official CMS public-use data for Cynthia M. Niendorff, 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.

Hospitals where Cynthia M. Niendorff works

Medicare's Facility Affiliation Data lists Cynthia M. Niendorff 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.

• Chan Soon- Shiong Medical Center at WindberWindber, PA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 390112
• 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
• Parkridge Medical CenterChattanooga, TN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 440156

Practice locations

Addresses where Cynthia M. Niendorff is enrolled with Medicare (CMS data updated October 2, 2026).

• 10820 Parkside Dr, Suite 208Knoxville, TN 37934 (865) 546‑8040
• 1400 Bellinger StEau Claire, WI 54703 (715) 838‑5222
• 600 Somerset AveWindber, PA 15963 (814) 467‑3000

Group practices

Medicare enrollment lists Cynthia M. Niendorff as a member of these groups (CMS data updated October 2, 2026).

• Mayo Clinic Health System-Northwest Wisconsin Region Inc802 clinicians in the group
• American Anesthesiology of Tennessee PC298 clinicians in the group
• Novus Pennsylvania Professional Corporation19 clinicians in the group

Specialties

• Anesthesiologyprimary
• Pain Managementalso

Find other Anesthesiology doctors in Tennessee →

Other anesthesiologists in Knoxville

Clinicians with the same Medicare primary specialty in Knoxville, TN — not a recommendation.

• Diane C. Armenta, MD
• Matthew B. Vance, MD
• Benjamin A. Harper, MD
• Thomas J. Ebert
• Matthew W. Ison, MD
• Brian Conroy, MD
• Hailey G. Amick, MD
• Joseph H. Tipton, MD

All anesthesiologists in Knoxville →

Other clinicians in Mayo Clinic Health System-Northwest Wisconsin Region Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Nicole Dodge
• Pravesh Sharma, MD
• Devender Singh, MD
• Celestine Jain-Ofoma, MD
• Sara J. Schierenbeck
• Kevin J. Wergeland, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians