Tara I-Hsin Chang, 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 Hospital · Stanford, CA
• Stanford Health Care Tri-Valley Hospital · Pleasanton, 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.

• MS. Seray Hawah Bayoh, FNP-BC Family Nurse Practitioner · Stanford, CA
• Jennifer Lee Caswell-Jin, MD Internal Medicine Physician · Stanford, CA
• Dolly Shuo-Teh Chang, MD Ophthalmology Physician · Stanford, CA
• Steven Daniel Chang, MD Neurological Surgery Physician · Stanford, CA
• Timothy Chan Chang, MD Surgery Physician · Stanford, CA
• Enrica Mang Ka Fung, MD Internal Medicine Physician · Stanford, CA
• Debra Masako Ikeda, MD Diagnostic Radiology Physician · Stanford, CA
• Jennifer Sue Lofland, CRNA Certified Registered Nurse Anesthetist · Stanford, CA
• Travis Joseph Miller, MD Plastic Surgery Physician · Palo Alto, CA
• George Poultsides, MD Surgery Physician · Palo Alto, CA
• Pedro Paulo Tanaka, MD Anesthesiology Physician · Stanford, CA
• Ami Nicole Townsend, NP Nurse Practitioner · Stanford, CA

Other providers in Stanford

• Julia Jaekyung Chang, MD

  Individual Internal Medicine Physician · NPI 1619330222

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

• Kevin Kai Chih Chang, MD

  Individual Internal Medicine Physician · NPI 1740643600

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 725-4000

• Spencer Michael Chang, MD

  Individual Internal Medicine Physician · NPI 1275160368

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

• Stephen Chang, MD, PHD

  Individual Internal Medicine Physician · NPI 1417240227

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

• Amina Chaudhry, MD

  Individual Internal Medicine Physician · NPI 1336679166

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

• Christopher Tsung-Jer Chen, MD

  Individual Internal Medicine Physician · NPI 1467865527

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

• Chwen-Yuen Angie Chen, MD

  Individual Internal Medicine Physician · NPI 1114100476

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

• Dr. Connie E-Jean Chen, MD

  Individual Internal Medicine Physician · NPI 1144586199

  300 Pasteur Dr Grant S101, Stanford, CA 94305-2200 · (650) 723-6661