Tung C. Nguyen, DO

Medicare activity in 2024

Official CMS public-use data for Tung C. 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 low level od decision making, if using time, 20 minutes or more (99213)88 services
2. Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)25 services
3. Insertion of needle into vein (3 years or older) (36410)18 services
4. Advance care planning, first 30 minutes (99497)16 services
5. 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 blood pressure75%
• High cholesterol75%
• Diabetes54%
• Arthritis33%
• Ischemic heart disease28%

Hospitals where Tung C. Nguyen works

Medicare's Facility Affiliation Data lists Tung C. 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.

• PIH Health Downey HospitalDowney, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050393

Practice locations

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

• 2509 W 1st StSanta Ana, CA 92703 (714) 541‑0057
• 7631 Wyoming St, Suite 201Westminster, CA 92683 (714) 898‑0765

Group practices

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

• Family Choice Aco Inc55 clinicians in the group

Specialties

• Family Practiceprimary

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Other family doctors in Santa Ana

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

• Boris Trifunovic, MD
• Bruno Bucci, MD
• Rani Y. Yau, DO
• Alex H. Nguyen, DO
• Ashish A. Bhavsar, MD
• Anthony Chang, MD
• Joanne G. Pagal, DO
• Ravija Patel, MD

All family doctors in Santa Ana →

Other clinicians in Family Choice Aco Inc

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

• Huong T. Quy, DO
• Jaclynn J. Do, MD
• Cuong Nguyen, MD
• Phuc D. Nguyen, MD
• Dinh V. Dinh, DO
• Manish B. Marolia, 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