Hien T. Nguyen, DO

Medicare activity in 2024

Official CMS public-use data for Hien T. Nguyen, 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)122 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)30 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)13 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 cholesterol75%
• High blood pressure74%
• Arthritis43%
• Diabetes35%
• Depression23%
• Osteoporosis22%

Hospitals where Hien T. Nguyen works

Medicare's Facility Affiliation Data lists Hien T. Nguyen 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.

• Providence St. Joseph HospitalOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050069

Practice locations

Addresses where Hien T. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).

• 12942 Harbor BlvdGarden Grove, CA 92840 (714) 705‑2120
• 134000 Jamboree RdIrvine, CA 92602 (714) 263‑9279
• 1950 Sunny Crest Dr, Suite 2900Fullerton, CA 92835 (714) 992‑5350
• 2212 E 4th StSanta Ana, CA 92705 (714) 633‑1011
• 2501 E Chapman AveOrange, CA 92869 (714) 633‑7175

Group practices

Medicare enrollment lists Hien T. Nguyen as a member of this group (CMS data updated October 2, 2026).

• Providence Medical Foundation1,466 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in California →

Other family doctors in Garden Grove

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

• Trieu T. Bui, DO
• Duongthuy Chau, MD
• Shraddha Shah, MD
• Joseph J. Sacksteder, DO
• Anhthu T. Nguyen, DO
• Saeed Torabzadeh, MD
• Andrew E. Yu, MD
• Patrick A. Nguyen, MD

All family doctors in Garden Grove →

Other clinicians in Providence Medical Foundation

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

• Matthew D. Canipe, MD
• Rabab Hajar, MD
• Kenneth Paolo D. Lising, NP
• Linda Tran, DO
• Rodney G. Dekleuver, PA
• Jay Chung, 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