Thong H. Nguyen, MD

Medicare activity in 2024

Official CMS public-use data for Thong H. 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. Anesthesia for other closed procedure on chest (00520)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%
• High cholesterol75%
• Arthritis48%
• Diabetes44%
• Ischemic heart disease41%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)41%

Hospitals where Thong H. Nguyen works

Medicare's Facility Affiliation Data lists Thong H. 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 Thong H. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).

• 101 E Valencia Mesa DrFullerton, CA 92835 (714) 871‑3280
• 1100 W Stewart DrOrange, CA 92868 (714) 744‑8700

Group practices

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

• Allied Anesthesia Medical Group Inc191 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in California →

Other anesthesiologists in Fullerton

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

• Charles P. Jun, DO
• Larry Vazquez, MD
• Zhaoyi J. Tang, MD
• John Son, MD
• Tony Hu, DO
• Nathan T. Kudrick, MD
• Steven Maler, MD
• Michael J. Lillie, MD

All anesthesiologists in Fullerton →

Other clinicians in Allied Anesthesia Medical Group Inc

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

• Sherif N. Meckael, MD
• Charles P. Jun, DO
• Larry Vazquez, MD
• Michael Richman, MD
• Grant Lundie, MD
• Kyle C. Wehner, 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