Dr. John Peter Baron, DO

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.

• Adventist Health St Helena Hospital · Saint Helena, CA · listed as Adventist Health St Helena OB/GYN
• Providence Queen Of The Valley Medical Center Hospital · Napa, CA · listed as St Joseph Health Northern California, LLC
• Sutter Medical Center, Sacramento Hospital · Sacramento, CA · listed as Sutter Medical Center Sacramento
• Sutter Solano Medical Center Hospital · Vallejo, CA
• DaVita Napa Dialysis Center Dialysis facility · Napa, CA · listed as Renal Treatment Centers California Inc
• DaVita Silverado Dialysis Dialysis facility · Napa, CA · listed as Paukert Dialysis Inc
• Rai-Chadbourne-Fairfield Dialysis facility · Fairfield, CA · listed as Rai Care Centers of Northern California I, LLC
• Sonoma Valley Hospital Hospital · Sonoma, CA

Colleagues at East Bay Nephrology Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 30 clinicians in the practice; 12 are shown here.

• Simarjit K. Dhaliwal, MD Nephrology Physician · Brentwood, TN
• Dr. Robert B Doud, MD Nephrology Physician · Berkeley, CA
• Anuj Gupta, MD Internal Medicine Physician · Rochester, NY
• Smita S Gyawali, PA Physician Assistant · Walnut Creek, CA
• Dr. Oliver K Khakmahd, MD Nephrology Physician · Berkeley, CA
• Susan Leung, RD Registered Dietitian · Oakland, CA
• Betty C Melchor Family Nurse Practitioner · Pleasanton, CA
• Nadereh Sarnevesht, PA Medical Physician Assistant · Berkeley, CA
• Dr. Bryan M Wong, MD Nephrology Physician · Berkeley, CA
• Dr. Samuel J Wong, DO Nephrology Physician · Berkeley, CA
• Dr. Monte M Wu, MD Nephrology Physician · Berkeley, CA
• Warda Zaman, DO Nephrology Physician · Greenbrae, CA

Other providers in Travis AFB

• Dr. Todd Bruno, MD

  Individual Nephrology Physician · NPI 1407059702

  101 Bodin Cir, Travis AFB, CA 94535-1819 · (707) 816-5930

• Fedoua ER Rbii, MD

  Individual Nephrology Physician · NPI 1871150680

  101 Bodin Cir, Travis AFB, CA 94535-1809 · (707) 816-5930

• Huyen Nguyen, MD

  Individual Nephrology Physician · NPI 1528502895

  101 Bodin Cir, Travis AFB, CA 94535-1809 · (707) 437-2370