Dr. Jiwon Youm, 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. Those with a page here are linked.

• Contra Costa Regional Medical Center Hospital · Martinez, CA
• Good Samaritan Hospital Hospital · San Jose, CA
• John Muir Medical Center - Concord Campus Hospital · Concord, CA · listed as John Muir Medical Ctr Concord Campus
• Stanford Health Care Tri-Valley Hospital · Pleasanton, CA
• John Muir Medical Center - Walnut Creek Campus Hospital · Walnut Creek, CA

Colleagues at John Muir Magnetic Imaging Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 55 clinicians in the practice; 12 are shown here.

• Hui Jie Jenny Chen, MD Neuroradiology Physician · Menlo Park, CA
• Dr. Patrick Christopher Gonzales, MD Diagnostic Radiology Physician · Walnut Creek, CA
• Kevin Tuwen Hsu, MD Diagnostic Radiology Physician · Stanford, CA
• Christopher Derek Lee, MD Diagnostic Radiology Physician · San Francisco, CA
• Christopher Allan Mutch, MD Neuroradiology Physician · Walnut Creek, CA
• Dr. Saurabh Patel, MD Diagnostic Radiology Physician · Walnut Creek, CA
• Siva P Raman Diagnostic Radiology Physician · Walnut Creek, CA
• Samira Rathnayake, MD Student in an Organized Health Care Education/Training Program · New Haven, CT
• Dr. Steffan Soosman, MD Diagnostic Radiology Physician · Oakland, CA
• Geraldine Nguyen Tran, MD Diagnostic Radiology Physician · Boston, MA
• Benjamin Voss, MD Diagnostic Radiology Physician · San Francisco, CA
• Ray Rui Zhang, MD, PHD Diagnostic Radiology Physician · Stanford, CA

Other providers in Walnut Creek

• Jeffrey William Wang, MD

  Individual Diagnostic Radiology Physician · NPI 1316500150

  2125 Oak Grove Rd Ste 200, Walnut Creek, CA 94598-2520 · (925) 296-7150

• Vivian Wing, MD

  Individual Diagnostic Radiology Physician · NPI 1780620088

  2125 Oak Grove Rd Ste 200, Walnut Creek, CA 94598-2536 · (925) 296-7156

• Dr. Vincent K W Wong, MD

  Individual Diagnostic Radiology Physician · NPI 1366691099

  2125 Oak Grove Rd Ste 200, Walnut Creek, CA 94598-2536 · (925) 296-7150

• Dr. David Heekwan Woo, MD

  Individual Diagnostic Radiology Physician · NPI 1407988272

  2125 Oak Grove Rd Ste 200, Walnut Creek, CA 94598-2536 · (925) 296-7150

• Robinson Ku Yu, MD

  Individual Diagnostic Radiology Physician · NPI 1831464999

  2125 Oak Grove Rd Ste 200, Walnut Creek, CA 94598 · (925) 296-7150