Nhi Yen Nguyen, MD

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

• Stanford Health Care Tri-Valley Hospital · Pleasanton, CA
• Vitas Healthcare Corporation Of California Hospice · Walnut Creek, CA

Colleagues at Stanford Health Care

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3085 clinicians in the practice; 12 are shown here.

• Robert T Chang, MD Ophthalmology Physician · Stanford, CA
• Glenn Matthew Chertow, MD Internal Medicine Physician · Stanford, CA
• Shideh Farahmand, NP Adult Health Nurse Practitioner · Stanford, CA
• Dr. Iris C Gibbs, MD Radiation Oncology Physician · Palo Alto, CA
• Erica Leigh Hartmann, MPH, MMS, PA-C Physician Assistant · Stanford, CA
• Vinh Quang Lam, MD Family Medicine Physician · Stanford, CA
• Chad York Lewis, MD, MPH Internal Medicine Physician · Palo Alto, CA
• Tracey Lynn McLaughlin, MD Endocrinology, Diabetes & Metabolism Physician · Stanford, CA
• Vladimir Nekhendzy, MD Anesthesiology Physician · Stanford, CA
• Dr. Lawrence David Recht, MD Neurology Physician · Palo Alto, CA
• Randall H Vagelos, MD Advanced Heart Failure and Transplant Cardiology Physician · Stanford, CA
• Gina Yu, MD Surgery Physician · Palo Alto, CA

Other providers in Stanford

• Ashwin Kulur Nayak

  Individual Internal Medicine Physician · NPI 1669976882

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 723-6661

• Andrew Barrett Nevins, MD

  Individual Internal Medicine Physician · NPI 1356420913

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 723-4000

• Lynn Khaonh Ngo, MD

  Individual Internal Medicine Physician · NPI 1659303907

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 723-4000

• Kim-Son Hoa Nguyen

  Individual Internal Medicine Physician · NPI 1831357029

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 723-4000

• Sankar Narayan Niranjan, MD

  Individual Internal Medicine Physician · NPI 1497752802

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 723-4000

• Prachaya Nitichaikulvatana, MD

  Individual Internal Medicine Physician · NPI 1861693228

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 723-4000

• Joyce Nyaucha Njoroge, MD

  Individual Internal Medicine Physician · NPI 1790147965

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 723-4000

• Shantanu Nundy, MD

  Individual Internal Medicine Physician · NPI 1891950606

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 723-4000