Andrew A. Nguyen, DO

Medicare activity in 2024

Official CMS public-use data for Andrew A. 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)249 services
2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)111 services
3. Hospital discharge day management, more than 30 minutes (99239)57 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%
• Arthritis71%
• Ischemic heart disease43%
• Diabetes40%
• Heart failure40%

Hospitals where Andrew A. Nguyen works

Medicare's Facility Affiliation Data lists Andrew A. 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.

• Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050224

Practice locations

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

• 280 Newport Ctr Dr, Suite 110Newport Beach, CA 92660 (949) 478‑3305
• 709 N Hill St, Suite 18Los Angeles, CA 90012 (213) 687‑0988

Group practices

Medicare enrollment lists Andrew A. Nguyen as a member of these groups (CMS data updated October 2, 2026).

• Andrew Nguyen DO a Professional Medical Corporation9 clinicians in the group
• Precision Health Center8 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in California →

Other family doctors in Newport Beach

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

• Kathryn Gussman, MD
• Alexis Case, DO
• Andrew J. Mock, MD
• Robert C. Walker, DO
• Svetlana Raichel-Stivi, MD
• Connor J. King, DO
• Todd Macauley, MD
• Edmond Y. Wong, MD

All family doctors in Newport Beach →

Other clinicians in Andrew Nguyen DO a Professional Medical Corporation

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

• Cody T. Casalegno, DO
• Nita Chen, MD
• Richard Thai, DO
• Bao T. Bui, MD
• Nicole K. Lussier, OT
• Janet S. Lee, 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