Robert J Ellis, 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.

• Cox Medical Centers Hospital · Springfield, MO · listed as Lester E. Cox Medical Centers
• Lake Regional Health System Hospital · Osage Beach, MO
• Mercy Hospital Lebanon Hospital · Lebanon, MO
• Mercy Hospital Springfield Hospital · Springfield, MO
• Cox Medical Center Branson Hospital · Branson, MO

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.

• 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
• Tyler Chrystine Fugere, MD Student in an Organized Health Care Education/Training Program · Benton, AR
• Donna J Gibson, MSNED, RN, FNP-C Family Nurse Practitioner · Asheville, NC
• Kristen Wortman Sager, MD Hematology & Oncology Physician · Mena, AR
• Brian Jay Shimkus, MD Medical Oncology Physician · Georgetown, TX
• 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 Springfield

• William F Cunningham, MD

  Individual Medical Oncology Physician · NPI 1043288483

  3850 S National Ave Ste 600, Springfield, MO 65807-5287 · (417) 882-4880

• Jiantao Ding, MD

  Individual Medical Oncology Physician · NPI 1396764551

  3850 S National Ave Ste 600, Springfield, MO 65807-5287 · (417) 882-4880

• Ernest C Lewis, MD

  Individual Medical Oncology Physician · NPI 1457445579

  2115 S Fremont Ave Ste 1000, Springfield, MO 65804-2239 · (417) 820-8099