Patrick Tso, 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.

Colleagues at Permanente Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 10941 clinicians in the practice; 12 are shown here.

• Norman Michael Aleks Gunn, MD Anesthesiology Physician · Oakland, CA
• George V Janku, MD Orthopaedic Surgery Physician · San Francisco, CA
• Wenji Jiang, MD Diagnostic Radiology Physician · Modesto, CA
• Tin-Na J. Kan, MD Anesthesiology Physician · South San Francisco, CA
• Erik L. Kenyon, DPM Podiatrist · Modesto, CA
• Robert B. McLaughlin, MD Otolaryngology Physician · Sacramento, CA
• Diparshi Mukherjee, DO Sports Medicine (Internal Medicine) Physician · Vallejo, CA
• Tan M. Nguyen, MD Diagnostic Radiology Physician · Sacramento, CA
• Bihai Peng, MD Radiation Oncology Physician · Rancho Cordova, CA
• Kamlesh K. Sandhu, DO Psychiatry Physician · Fresno, CA
• Surekha Urva, MD Internal Medicine Physician · Pleasanton, CA
• Renuka R. Yeldandi, MD Hospitalist Physician · Oakland, CA

Other providers in Fremont

• Amelia Chen Sheh, MD

  Individual Ophthalmology Physician · NPI 1376749713

  3200 Kearney St, Fremont, CA 94538-2299 · (510) 498-2857

• Dr. Robert L Singer, MD

  Individual Ophthalmology Physician · NPI 1497849525

  38024 Martha Ave, Fremont, CA 94536 · (510) 791-2233

• James J. Song, MD

  Individual Ophthalmology Physician · NPI 1245341700

  2299 Mowry Ave Ste 3A, Fremont, CA 94538 · (510) 713-9898

• Dr. Fang Tan, MD

  Individual Ophthalmology Physician · NPI 1811997646

  1895 Mowry Ave Ste 101, Fremont, CA 94538-1737 · (510) 793-2800

• Michael P. Walvick, DO

  Individual Ophthalmology Physician · NPI 1497830152

  39400 Paseo Padre Pkwy, Fremont, CA 94538-2310 · (510) 795-3000