Hong P. Duong, MD

Medicare activity in 2024

Official CMS public-use data for Hong P. Duong, 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 50 minutes (99233)670 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)140 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)136 services
4. Hospital discharge day management, more than 30 minutes (99239)120 services
5. Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)112 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%
• Diabetes61%
• Ischemic heart disease53%
• Arthritis48%
• Chronic kidney disease48%

Hospitals where Hong P. Duong works

Medicare's Facility Affiliation Data lists Hong P. Duong 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.

• Garden Grove Hospital & Medical CenterGarden Grove, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050230
• UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348

Practice locations

Addresses where Hong P. Duong is enrolled with Medicare (CMS data updated October 2, 2026).

• 15581 Brookhurst StWestminster, CA 92683

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Westminster

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

• Khue N. Vu, MD
• Khai Do, MD
• Tracy T. Tran, DO
• Chinh V. Mai, MD
• Tu S. Nguyen, MD
• Tung H. Ngo, DO
• Victoria Greblya, MD
• Hai H. Pham, MD

All internal medicine doctors in Westminster →

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