Timothy R. Niedzielak, DO

Medicare activity in 2024

Official CMS public-use data for Timothy R. Niedzielak, 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.

Most frequent services

1. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)50 services
2. Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)14 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)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 blood pressure75%
• High cholesterol75%
• Arthritis71%
• Anxiety38%
• Heart failure37%
• Ischemic heart disease36%

Hospitals where Timothy R. Niedzielak works

Medicare's Facility Affiliation Data lists Timothy R. Niedzielak 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.

• Javon Bea HospitalRockford, IL · Acute Care Hospital · closed, according to its website · CCN 140239
• Monument Health Rapid City HospitalRapid City, SD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 430077

Practice locations

Addresses where Timothy R. Niedzielak is enrolled with Medicare (CMS data updated October 2, 2026).

• 1635 Caregiver CirRapid City, SD 57702 (605) 755‑6100
• 2805 5th StRapid City, SD 57701 (605) 646‑0953
• 8201 E Riverside BlvdRockford, IL 61114 (815) 971‑2000

Group practices

Medicare enrollment lists Timothy R. Niedzielak as a member of these groups (CMS data updated October 2, 2026).

• Rockford Health Physicians521 clinicians in the group
• Acute Care Surgery of South Dakota PC65 clinicians in the group

Specialties

• Orthopedic Surgeryprimary

Find other Orthopedic Surgery doctors in South Dakota →

Other orthopedic surgeons in Rapid City

Clinicians with the same Medicare primary specialty in Rapid City, SD — not a recommendation.

• Brian Hodges, DO
• Scott L. Franssen, DO
• Kenneth K. Milligan, MD
• Christian J. Gaffney, MD
• Joshua M. Kolz, MD
• Lew W. Papendick, MD
• Mark S. Anderson, MD
• John Anderson, MD

All orthopedic surgeons in Rapid City →

Other clinicians in Rockford Health Physicians

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

• Susan M. Hong, MD
• Arnav R. Pondicherry, MD
• Rebecca J. Hartman, PT
• Heather R. Homick
• Leena Mammen, MD
• Miguel Alvarez Jr.

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