Brian Jay Shimkus, 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.

• Ascension Seton Williamson Hospital · Round Rock, TX · listed as Ascension Seton
• St David'S Medical Center Hospital · Austin, TX
• Halcyon Home Llc Home health agency · Austin, TX · listed as Halcyon Home, LLC
• Valerian Home Health And Hospice Home health agency · Round Rock, TX · listed as Valerian Home Health and Hospice LLC
• Ascension Seton Cedar Park Hospital · Cedar Park, TX
• North Austin Medical Center Hospital · Austin, TX
• Round Rock Medical Center Hospital · Round Rock, TX
• Georgetown Living Home Health & Companions Home health agency · Georgetown, TX
• Life Unlimited Home Health Llc Home health agency · Austin, TX
• Magnolia Home Health Home health agency · Arlington, TX

Colleagues at American Oncology Partners PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 383 clinicians in the practice; 12 are shown here.

• Confidence Nnenna Alaboson Nurse Practitioner · Houston, TX
• Tamara Arboleda, NP Family Nurse Practitioner · Houston, TX
• Cathy R Barnes, PA Physician Assistant · Savannah, GA
• Dr. Haven Lindsay Caldwell-Sachar, DO Medical Oncology Physician · Savannah, GA
• Alvaro Frometa, MD Anatomic Pathology & Clinical Pathology Physician · Fort Myers, FL
• Donna J Gibson, MSNED, RN, FNP-C Family Nurse Practitioner · Asheville, NC
• Laci D Patton, APRN Nurse Practitioner · Hot Springs, AR
• Kristen Wortman Sager, MD Hematology & Oncology Physician · Mena, AR
• Muhammad Kamran Siddique, MD Hematology & Oncology Physician · Centreville, MD
• Dr. Renee Powell Warford, MD Urology Physician · Hot Springs, AR
• Mrs. Bea Jaye Warlick, APRN, CNP Family Nurse Practitioner · Fort Myers, FL
• Dr. Sean Michael Warsch, MD Hematology (Internal Medicine) Physician · Asheville, NC

Other providers in Georgetown

• Dr. Derrick Duong Nguyen, MD

  Individual Medical Oncology Physician · NPI 1518006501

  3201 S Austin Ave Ste 315, Georgetown, TX 78626-7642 · (512) 358-9428

• Texas Integrated Medical Specialists, PLLC

  Organization Medical Oncology Physician · NPI 1558080416

  2000 Scenic Dr Ste G002, Georgetown, TX 78626-7726 · (512) 531-5200