Alexander Hyunjoon Song, 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

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.

• Brendan Carvalho, MD Anesthesiology Physician · Stanford, CA
• Katy Leamarie Cowden, NP Nurse Practitioner · Stanford, CA
• Gregory Marshall Heestand, MD Medical Oncology Physician · Stanford, CA
• Charlene Hu, MD Neurology Physician · Pleasanton, CA
• Youn-Hee Kim, MD Dermatology Physician · Stanford, CA
• Emanuella Magalhaes Leite, PA Physician Assistant · Stanford, CA
• Amy Li Matecki, MD Internal Medicine Physician · Stanford, CA
• Gerilynn Marie Schott-Horvick, NP Nurse Practitioner · Stanford, CA
• Katie Marie Speirs, MD Anesthesiology Physician · Stanford, CA
• Lily Aileen Stander, NP Nurse Practitioner · Stanford, CA
• Stephen Robert Viess, MD Orthopaedic Surgery Physician · Dublin, CA
• Victor J Wu, PA-C Physician Assistant · Stanford, CA

Other providers in Stanford

• George Willard Sledge Jr., MD

  Individual Internal Medicine Physician · NPI 1780640318

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

• Andrea Catherine Smeraglio, MD

  Individual Internal Medicine Physician · NPI 1649513359

  300 Pasteur Drive Lane 154, Stanford, CA 94305-5133 · (650) 723-6661

• Melody Smith, MD

  Individual Internal Medicine Physician · NPI 1790915031

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

• Sulaiman Salim Somani, MD

  Individual Internal Medicine Physician · NPI 1609453026

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

• Sean Paul Spencer, MD, PHD

  Individual Internal Medicine Physician · NPI 1235518176

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

• Malathi Srinivasan, MD

  Individual Internal Medicine Physician · NPI 1285618868

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

• Randall Scott Stafford, MD, PHD

  Individual Internal Medicine Physician · NPI 1497804439

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

• Stanford Hospital and Clinics

  Organization Internal Medicine Physician · NPI 1770533127

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 498-7103