Paul C. Niu, MD

Medicare activity in 2024

Official CMS public-use data for Paul C. Niu, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)431 services
2. Dialysis services, 4 or more physician visits per month (20 years or older) (90960)220 services
3. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)220 services
4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)139 services
5. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)98 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%
• Chronic kidney disease75%
• Diabetes69%
• Heart failure48%
• Ischemic heart disease45%

Hospitals where Paul C. Niu works

Medicare's Facility Affiliation Data lists Paul C. Niu 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.

• Corona Regional Medical CenterCorona, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050329

Practice locations

Addresses where Paul C. Niu is enrolled with Medicare (CMS data updated October 2, 2026).

• 2057 Compton Ave, Suite 102Corona, CA 92881
• 3660 Park Sierra Dr, Suite 203Riverside, CA 92505

Specialties

• Nephrologyprimary
• Internal Medicinealso

Find other Nephrology doctors in California →

Other nephrologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

• Fawaz S. Al Ammary, MD
• Jackson Wang, MD
• Satpreet Sekhon, MD
• Vanessa G. Grubbs, MD
• Solomon F. Bitew, MD
• Anas Kayal, MD
• Denise M. Ricker, MD
• Michael Chau, DO

All nephrologists in California →

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