Alice Chen Fan, 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.

• Erica Pasciullo Cahill, MD Obstetrics & Gynecology Physician · Stanford, CA
• Neil Gesundheit, MD Internal Medicine Physician · Stanford, CA
• Tahereh Ghaziani, MD Gastroenterology Physician · Stanford, CA
• Josef Micaiah Hannah, DO Internal Medicine Physician · Palo Alto, CA
• Jiang-Ti Kong, MD Anesthesiology Physician · Stanford, CA
• William Spencer Lewis, MD Otolaryngology Physician · Los Gatos, CA
• Chelsea MA, MD Internal Medicine Physician · Stanford, CA
• Fauzia Riaz, MD Internal Medicine Physician · Stanford, CA
• Martina Kelly Speight, NP Adult Health Nurse Practitioner · Stanford, CA
• Allison L Thompson, PHD Psychologist · Stanford, CA
• Geoffrey Jay Tso, MD Clinical Informatics Physician · Palo Alto, CA
• Rachel Wu, NP Adult Health Nurse Practitioner · Stanford, CA

Other providers in Palo Alto

• Dr. Sean Patrick Bohen, MD, PHD

  Individual Medical Oncology Physician · NPI 1194869685

  875 Blake Wilbur Dr, Palo Alto, CA 94304-2205 · (650) 723-7621

• Natalia Colocci, MD

  Individual Medical Oncology Physician · NPI 1215948484

  795 El Camino Real, Palo Alto, CA 94301-2302 · (650) 321-4121

• Dr. Eric William Humke, MD, PHD

  Individual Medical Oncology Physician · NPI 1881874519

  875 Blake Wilbur Dr Stanford Cancer Ctr, Palo Alto, CA 94304-2205 · (650) 498-6000

• Paula Kushlan, MD

  Individual Medical Oncology Physician · NPI 1689783839

  795 El Camino Real, Palo Alto, CA 94301-2302 · (209) 603-8524

• Dr. Mark Lee, MD, PHD

  Individual Medical Oncology Physician · NPI 1881738003

  875 Blake Wilbur Dr, Palo Alto, CA 94304-2205 · (650) 723-7621

• David Leibowitz, MD

  Individual Medical Oncology Physician · NPI 1508975665

  795 El Camino Real, Palo Alto, CA 94301-2302 · (650) 321-4121