David Stephen Wang, 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.

• 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.

• Daniel Eugene Clark, MD Adult Congenital Heart Disease Physician · Stanford, CA
• Jennifer Rebecca Stewart Dimino, MD Gastroenterology Physician · Stanford, CA
• Taoyuan Robert Feng, MD Anesthesiology Physician · Stanford, CA
• Kevin Neal Helenius, PA-C Athletic Trainer · Stanford, CA
• Ian Harris Kratter, MD, PHD Behavioral Neurology & Neuropsychiatry Physician · Stanford, CA
• Michael Christopher Lambert, CRNA Certified Registered Nurse Anesthetist · Stanford, CA
• Chase Axel Ludwig, MD Ophthalmology Physician · Stanford, CA
• Maria Ellaine Magsumbol Maala, NP Nurse Practitioner · Stanford, CA
• Brigid Therese Matts, NP Adult Health Nurse Practitioner · Stanford, CA
• Erqi Pollom Radiation Oncology Physician · Palo Alto, CA
• Ruwan Iranga Rajapakse, NP Nurse Practitioner · Stanford, CA
• Eric Joon Yang, MD/PHD Cytopathology Physician · Stanford, CA

Other providers in Stanford

• Rajesh Pravin Shah, MD

  Individual Vascular & Interventional Radiology Physician · NPI 1982867321

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

• Daniel Yung-Ho Sze, MD, PHD

  Individual Vascular & Interventional Radiology Physician · NPI 1194882985

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

• Anobel Tamrazi, MD

  Individual Vascular & Interventional Radiology Physician · NPI 1992927503

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

• Hong-Ngoc Vo, MD

  Individual Vascular & Interventional Radiology Physician · NPI 1962638767

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