Hongyu Zhao, MD

Medicare activity in 2024

Official CMS public-use data for Hongyu Zhao, 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)17 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%
• Diabetes75%
• Chronic kidney disease75%
• High cholesterol71%

Hospitals where Hongyu Zhao works

Medicare's Facility Affiliation Data lists Hongyu Zhao 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.

• Kaiser Foundation Hospital - DowneyDowney, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 050139

Practice locations

Addresses where Hongyu Zhao is enrolled with Medicare (CMS data updated October 2, 2026).

• 3288 Moanalua RdHonolulu, HI 96819 (808) 432‑0000
• 9333 Imperial HwyDowney, CA 90242 (800) 923‑4040
• 9333 Rosecrans AveBellflower, CA 90706 (562) 461‑3000
• 9353 Imperial HwyDowney, CA 90242 (562) 657‑9000
• 9449 Imperial HwyDowney, CA 90242 (562) 461‑3000

Group practices

Medicare enrollment lists Hongyu Zhao as a member of these groups (CMS data updated October 2, 2026).

• Southern California Permanente Medical Group11,293 clinicians in the group
• Hawaii Permanente Medical Group Inc704 clinicians in the group

Specialties

• Nephrologyprimary

Find other Nephrology doctors in Hawaii →

Other nephrologists in Honolulu

Clinicians with the same Medicare primary specialty in Honolulu, HI — not a recommendation.

• Noah M. Solomon, MD
• Christie Izutsu, MD
• Antonette Veronica B. Hernandez, MD
• Rick Y. Hayashi, MD
• Chester Ching, MD
• Kunal K. Parekh, MD
• Karen I. Ching, MD
• Jaclyn C. Khil, MD

All nephrologists in Honolulu →

Other clinicians in Southern California Permanente Medical Group

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

• Alex C. Lu, MD
• Eric M. Simkin, MD
• Tara N. Thacker, MD
• Elezer A. Negus, MD
• Russell M. Odono, MD
• Keith A. Hamilton, DO

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