Lisa Renee Williams, AGACNP-BC

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.

• Ut Of Texas Southwestern University Hospital - William P. Clements Jr. Hospital · Dallas, TX

Colleagues at University of Texas Southwestern Medical Center at Dallas

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3149 clinicians in the practice; 12 are shown here.

• Traci N Adams, MD Internal Medicine Physician · Dallas, TX
• Dr. Lakshmi Ananthakrishnan, MD Diagnostic Radiology Physician · Dallas, TX
• Suzanne Cole, MD Hematology & Oncology Physician · Richardson, TX
• Dr. Kevin Dale Courtney, MD Internal Medicine Physician · Dallas, TX
• Miss. Jessica Howard Greenemeier, PA-C Surgical Physician Assistant · Dallas, TX
• Fatma Gul, MD Physical Medicine & Rehabilitation Physician · Dallas, TX
• Shaida Khan, DO Neuromuscular Medicine (Psychiatry & Neurology) Physician · Dallas, TX
• Babatunde Olumide Ogunnaike, MD Anesthesiology Physician · Dallas, TX
• Keri Shafer, MD Cardiovascular Disease Physician · Dallas, TX
• Dr. Charles Lee White III, MD Neuropathology Physician · Dallas, TX
• Christian Allen Wysocki, MD, PHD Allergy & Immunology (Internal Medicine) Physician · Dallas, TX
• Nasir Zaki, MD Psychiatry Physician · Plano, TX

Other providers in Dallas

• Dr. Ateefa Chaudhury, MD

  Individual Hematology (Internal Medicine) Physician · NPI 1841570611

  2001 Inwood Rd, Dallas, TX 75390-7202 · (214) 645-4673

• Ibrahim Fuad Ibrahim, MD

  Individual Hematology (Internal Medicine) Physician · NPI 1699975540

  5323 Harry Hines Blvd, Dallas, TX 75390-7201 · (214) 633-5555

• Vanessa Ortiz, MD

  Individual Hematology (Internal Medicine) Physician · NPI 1407813991

  7777 Forest Ln Ste B242, Dallas, TX 75230 · (972) 566-5588

• Mr. Jean-Antoine Ribeil, MD, PHD

  Individual Hematology (Internal Medicine) Physician · NPI 1629684675

  2001 Inwood Rd, Dallas, TX 75390-7202 · (214) 645-4673