Bruce E. Zweiban, 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.

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.

• Los Angeles General Medical Center Hospital · Los Angeles, CA · listed as Los Angeles County USC Medical Center

Colleagues at Southern California Permanente Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 11242 clinicians in the practice; 12 are shown here.

• Nicole R Briggs, OD Optometrist · San Diego, CA
• Natalie D Dale, PA Physician Assistant · Fontana, CA
• Bao Khanh Quy DO, MD Interventional Cardiology Physician · Fontana, CA
• Gary A. Gochman, MD Blood Banking & Transfusion Medicine Physician · Bellflower, CA
• Christopher Kramsch, MD Family Medicine Physician · Bellflower, CA
• David Lee, MD Rheumatology Physician · Riverside, CA
• Scott E. Lentz, MD Gynecologic Oncology Physician · Los Angeles, CA
• Ramana B. Muthyala, MD Body Imaging Physician · Bellflower, CA
• Stephen D. Nordman, MD Family Medicine Physician · Anaheim, CA
• Yan Shlimak, MD Internal Medicine Physician · Panorama City, CA
• William A. Wallace, MD Obstetrics & Gynecology Physician · Harbor City, CA
• Edward C. Wang, MD Internal Medicine Physician · Los Angeles, CA

Other providers in Panorama City

• Arthur D. Mehlman, MD

  Individual Gastroenterology Physician · NPI 1447327259

  13652 Cantara St, Panorama City, CA 91402-5423 · (818) 375-2000

• Anuradha R. Pappu, MD

  Individual Gastroenterology Physician · NPI 1215004189

  13652 Cantara St, Panorama City, CA 91402-5423 · (818) 375-2000

• Jung Park, MD

  Individual Gastroenterology Physician · NPI 1174855738

  8110 Woodman Ave, Panorama City, CA 91402 · (818) 375-2000

• Fredric P. Schlussel, MD

  Individual Gastroenterology Physician · NPI 1497814016

  13652 Cantara St, Panorama City, CA 91402-5423 · (818) 375-2000