Patricia Nguyen, MD

Medicare activity in 2024

Official CMS public-use data for Patricia 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. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)769 services
2. Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)66 services
3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)21 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%
• Ischemic heart disease47%
• Atrial fibrillation45%
• Chronic kidney disease44%
• Arthritis43%

Hospitals where Patricia Nguyen works

Medicare's Facility Affiliation Data lists Patricia 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.

• Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441

Practice locations

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

• 2585 Samaritan DrSan Jose, CA 95124 (650) 723‑4000
• 300 Pasteur DrStanford, CA 94305 (650) 723‑4000
• 5565 W Las Positas Blvd, Suite 150Pleasanton, CA 94588 (650) 723‑4000

Group practices

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

• Stanford Health Care3,122 clinicians in the group

Specialties

• Cardiovascular Disease (Cardiology)primary

Find other Cardiovascular Disease (Cardiology) doctors in California →

Other cardiologists in San Jose

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

• Ethan Daniels, MD
• Matthew L. Whitlock, MD
• Lakshmi Nair, MD
• Ting F. Tsai, MD
• Ashwini P. Sadhale, MD
• Nabil A. Shafi, MD
• Ronald M. Witteles, MD
• Kenneth W. Mahaffey, MD

All cardiologists in San Jose →

Other clinicians in Stanford Health Care

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

• Elham Rahimy, MD
• Donald Zhang, MD
• Barbara S. Wendland, NP
• Haiwei H. Guo, MD
• Volney F. Van Dalsem Iii, MD
• Renatta A. Lolong, NP

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