Christopher Bruce Lock, 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.

• Memorial Medical Center Hospital · Modesto, CA
• Peninsula Medical Center Hospital · Burlingame, CA · listed as Peninsula Medical Group
• 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.

• Jillian Scott Caldwell, DO Internal Medicine Physician · Stanford, CA
• Gaurav M Chattree, MD Neurology Physician · Stanford, CA
• Cathy Ivory Cheng, MD Sleep Medicine (Internal Medicine) Physician · Anaheim, CA
• Heather Anne Clark, AGANCP General Acute Care Hospital · Stanford, CA
• Hany Elmariah, MD Internal Medicine Physician · Stanford, CA
• Olivia Dew Joan Jee, MD Family Medicine Physician · Stanford, CA
• Suejin Son Kim, MD Gastroenterology Physician · San Jose, CA
• Janice Lin, MD Rheumatology Physician · Stanford, CA
• Yasaman Motlaghzadeh, MD Internal Medicine Physician · Stanford, CA
• Lori Samantha Muffly, MD Internal Medicine Physician · Stanford, CA
• Devon Marie Vandewiele, NP Women's Health Nurse Practitioner · Eugene, OR
• Allison Wolkin, CRNA Certified Registered Nurse Anesthetist · Stanford, CA

Other providers in Stanford

• Shawn Michael Barton, MD, PHD

  Individual Clinical Neurophysiology Physician · NPI 1649807546

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

• Robert Scott Fisher, MD

  Individual Clinical Neurophysiology Physician · NPI 1669425740

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 498-5710

• Scheherazade Traghis Le, MD

  Individual Clinical Neurophysiology Physician · NPI 1689857971

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

• Garima J Lupas, PHD

  Individual Clinical Neurophysiology Physician · NPI 1497358873

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

• Viet Dang Nguyen, MD

  Individual Clinical Neurophysiology Physician · NPI 1942497060

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

• Yuen Tat So, MD

  Individual Clinical Neurophysiology Physician · NPI 1891821401

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

• Fanglin Zhang, MD, PHD

  Individual Clinical Neurophysiology Physician · NPI 1386055473

  300 Pasteur Dr, Stanford, CA 94305-2200 · (650) 723-2300