Dr. Kenneth Richard Ziegler, 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.

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

Colleagues at USC Care Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1371 clinicians in the practice; 12 are shown here.

• Justyne Airdo, MD Anesthesiology Physician · Los Angeles, CA
• Shawna Whitney Benard, MD Neurology Physician · Los Angeles, CA
• Takashi Harano, MD Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Los Angeles, CA
• Jenny Jun Rheumatology Physician · Los Angeles, CA
• Hawa Mapara, AGNP-C Adult Health Nurse Practitioner · Los Angeles, CA
• Mary McGregor, OT Occupational Therapist · Los Angeles, CA
• Asal Naderi, MD Allergy & Immunology Physician · Los Angeles, CA
• Dr. Shannon Zielsdorf Neal, MD Transplant Surgery Physician · Chicago, IL
• MS. Rachel Park, WHCNP Women's Health Nurse Practitioner · Palo Alto, CA
• Dr. Chia-Ding Shih, MA, DPM Foot & Ankle Surgery Podiatrist · Los Angeles, CA
• Kristina Voss Ophthalmology Physician · Los Angeles, CA
• Harry Jingze Wong, MD Surgery Physician · Los Angeles, CA

Other providers in Los Angeles

• Vitalheal, a Professional Corporation

  Organization Vascular Surgery Physician · NPI 1063363919

  1494 S Robertson Blvd Ste 201, Los Angeles, CA 90035 · (626) 765-4302

• Mr. Willis H. Wagner, MD

  Individual Vascular Surgery Physician · NPI 1003836248

  8631 W 3rd St Ste 615E, Los Angeles, CA 90048-5901 · (310) 652-8132

• Wayne S. Gradman, MD Inc

  Organization Vascular Surgery Physician · NPI 1487831046

  2080 Century Park E Ste #803, Los Angeles, CA 90067-2001 · (310) 277-4868

• Fred A. Weaver, MD

  Individual Vascular Surgery Physician · NPI 1417989344

  1520 San Pablo St Ste 4300, Los Angeles, CA 90033-5330 · (323) 442-5849