Kenneth Cham Ong, 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.

• Good Samaritan Hospital Hospital · San Jose, CA
• Santa Clara Valley Medical Center Hospital · San Jose, CA
• Sutter Delta Medical Center Hospital · Antioch, CA
• Sutter Solano Medical Center Hospital · Vallejo, CA
• El Camino Health Hospital · Mountain View, CA

Colleagues at Solano Diagnostics Partners a Calif Limited Partnership

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 41 clinicians in the practice; 12 are shown here.

• Dr. Samuel Choi, MD Diagnostic Radiology Physician · Walnut Creek, CA
• Dr. George Chu, MD Diagnostic Radiology Physician · Walnut Creek, CA
• Chul Young Chung, MD Diagnostic Radiology Physician · Walnut Creek, CA
• Nour Dababo, MD Neuroradiology Physician · San Francisco, CA
• Dr. David Sung Kwon, MD Diagnostic Radiology Physician · Greensboro, NC
• Dr. Michael John Martinucci, MD Diagnostic Radiology Physician · Oakland, CA
• Alex Penn Vascular & Interventional Radiology Physician · Walnut Creek, CA
• Dr. Aseem Om Rawal, MD Diagnostic Radiology Physician · Walnut Creek, CA
• Cynthia Tan Diagnostic Radiology Physician · Maywood, IL
• Eric Mour-Kee Tao, MD Diagnostic Radiology Physician · Walnut Creek, CA
• Christopher D Tran, MD Diagnostic Radiology Physician · Walnut Creek, CA
• Robinson Ku Yu, MD Diagnostic Radiology Physician · Walnut Creek, CA

Other providers in San Jose

• Stuart Irwin Mass, MD

  Individual Neuroradiology Physician · NPI 1649289513

  2410 Samaritan Dr Ste 102, San Jose, CA 95124-3909 · (408) 371-0728

• Mahesh Ramu Patel, MD

  Individual Neuroradiology Physician · NPI 1700842556

  751 S Bascom Ave Diagnostic Imaging, San Jose, CA 95128-2604 · (408) 885-6360