William A. Rieck Jr., DO

Medicare activity in 2024

Official CMS public-use data for William A. Rieck Jr., 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)356 services
2. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)308 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)103 services
4. Needle measurement of electrical activity in arm or leg muscles, complete study (95886)95 services
5. Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)58 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%
• Arthritis73%
• Diabetes46%
• Ischemic heart disease42%
• Depression34%

Hospitals where William A. Rieck Jr. works

Medicare's Facility Affiliation Data lists William A. Rieck Jr. 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.

• ECU Health Medical CenterGreenville, NC · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 340040
• University of California Davis Medical CenterSacramento, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050599

Practice locations

Addresses where William A. Rieck Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

• 3301 C St, Suite 1500Sacramento, CA 95816 (877) 827‑7463
• 4860 Y StSacramento, CA 95817
• 4861 Y StSacramento, CA 95817 (916) 734‑2525

Group practices

Medicare enrollment lists William A. Rieck Jr. as a member of this group (CMS data updated October 2, 2026).

• Regents of the Univ of Ca1,584 clinicians in the group

Specialties

• Physical Medicine and Rehabilitationprimary
• Sports Medicinealso

Find other Physical Medicine and Rehabilitation doctors in California →

Other rehabilitation doctors in Sacramento

Clinicians with the same Medicare primary specialty in Sacramento, CA — not a recommendation.

• Joshua M. Rae, MD
• Laura M. Pilgram, MD
• Nicholas S. Race, MD
• Corinna Lowe, PT
• Brian C. Joves, MD
• Lee E. Vranna, MD
• Stephanie Li, MD
• Rita B. Bermudez, MD

All rehabilitation doctors in Sacramento →

Other clinicians in Regents of the Univ of Ca

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

• Sean F. Heavey, MD
• Shirin M. Ahmad, MD
• John A. Robbins, MD
• Karen E. Matsukuma, MD
• Sara M. Metcalf, MD
• Edgardo S. Salcedo Jr., 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