Serena Zhao Yang-Loudin, MD

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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. Those with a page here are linked.

• Eden Medical Center Hospital · Castro Valley, CA
• Stanford Health Care Hospital · Stanford, CA
• Stanford Health Care Tri-Valley Hospital · Pleasanton, CA
• John Muir Medical Center - Walnut Creek Campus Hospital · 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.

• Shawn Michael Barton, MD, PHD Clinical Neurophysiology Physician · Stanford, CA
• Magdalena Cherubin, PA-C Physician Assistant · Stanford, CA
• Eugenia Paula Custo Greig, MD Ophthalmology Physician · Palo Alto, CA
• Andrea Nadine Hinton, MD Dermatology Physician · Stanford, CA
• Maximilian Julve, MD Medical Oncology Physician · Stanford, CA
• Jong Hyon Lee, MD Internal Medicine Physician · Stanford, CA
• Joshua Jiakun Liu, MD Internal Medicine Physician · Stanford, CA
• Arnav Mehta, MD Internal Medicine Physician · Stanford, CA
• Jason Barzel Ross, MD Student in an Organized Health Care Education/Training Program · Stanford, CA
• Louise Ying Pw Sun, MD Anesthesiology Physician · Stanford, CA
• Akanksha Vaidya, MD Internal Medicine Physician · Stanford, CA
• Brian Washington, NP Family Nurse Practitioner · Stanford, CA

Other providers in Stanford

• Stanford Medical Center

  Organization Urology Physician · NPI 1972689156

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 498-5710

• Mary Oakley Strasser, MD, MBA

  Individual Urology Physician · NPI 1700417573

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

• Ryan Ruey-En Sun, MD

  Individual Urology Physician · NPI 1891430807

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

• Rohit Vikram Tejwani, MD

  Individual Urology Physician · NPI 1538693155

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

• Calvin C Zhao, MD

  Individual Urology Physician · NPI 1134700800

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