Thao P. Nguyen, MD

Medicare activity in 2024

Official CMS public-use data for Thao P. 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)349 services
2. Extended exam of the back part of the eye with retinal drawing (92201)80 services
3. Exam of visual field with extended testing (92083)62 services
4. Imaging of optic nerve (92133)61 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)46 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%
• Arthritis44%
• Diabetes42%
• Osteoporosis33%
• Chronic kidney disease26%

Hospitals where Thao P. Nguyen works

Medicare's Facility Affiliation Data lists Thao P. 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.

• UC San Diego Health Hillcrest - Hillcrest Medical CenterSan Diego, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050025

Practice locations

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

• 200 W Arbor DrSan Diego, CA 92103 (858) 249‑6753
• 2406 Ulric StSan Diego, CA 92111

Group practices

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

• Regents of the University of California2,089 clinicians in the group

Specialties

• Ophthalmologyprimary

Find other Ophthalmology doctors in California →

Other ophthalmologists in San Diego

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

• Nathan L. Scott, MD
• Edwin S. Chen, MD
• Alexi Geevarghese, MD
• Anjali S. Parekh, MD
• David J. Najafi, MD
• Lauren A. Eckstein, MD
• Peter J. Savino, MD
• Sasan Moghimi Araghi, MD

All ophthalmologists in San Diego →

Other clinicians in Regents of the University of California

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

• Payton Ottum, MD
• Divya S. Bolar, MD
• David E. Krummen, MD
• Parag Agnihotri, MD
• Mimi J. Yao, MD
• Luis Castellanos, 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