Ryan J. Ellis, MD, MS

Contact : ellisrj@iu.edu

Delivery of complex cancer care requires a balance between maximizing quality and ensuring robust access to potentially life-saving treatments. My research seeks to optimize this balance to ensure the best possible care is available to all patients with cancer.

Initiatives

Care Delivery

Research Scientist, William M. Tierney Center for Health Services Research, Regenstrief Institute
Assistant Professor of Surgery, Indiana University School of Medicine
Director, Surgical Outcomes and Quality Improvement Program (SOQIC) Postdoctoral Research Fellowship

Dr. Ryan Ellis is a health services researcher with a focus on the optimization of complex cancer care delivery, specifically in patients with malignancies of the liver and pancreas. This includes defining best practices in surgery, hospital and practitioner quality measurement, and intervening on systemic barriers to accessing quality care. He has additional experience in clinical trial development and execution, specifically in improving postoperative outcomes after liver and pancreas surgery. He has co-authored more than 50 peer-reviewed publications, including publications in the New England Journal of Medicine and JAMA, and has presented at numerous national meetings.

Dr. Ellis is a member of the American College of Surgeons, Association for Academic Surgery, Americas Hepato-Pancreato-Biliary Association, International Hepato-Pancreato-Biliary Association, Pancreas Club, Society of Surgical Oncology, Surgical Outcomes Club, and American Medical Informatics Association.

Highlighted Publications

Sep 1, 2023

Association Between Biliary Pathogens, Surgical Site Infection, and Pancreatic Fistula: Results of a Randomized Trial of Perioperative Antibiotic Prophylaxis in Patients Undergoing Pancreatoduodenectomy

Publication: Annals of Surgery

doi: 10.1097/SLA.0000000000005955

Authors: Ellis RJ, Brajcich BC, Bertens KA, Chan CHF, Castillo CF, Karanicolas PJ, Maithel SK, Reames BN, Weber SM, Vidri RJ, Pitt HA, Thompson VM, Gonen M, Seo SK, Yopp AC, Ko CY, D'Angelica MI

Apr 20, 2023

Piperacillin-Tazobactam Compared with Cefoxitin as Antimicrobial Prophylaxis for Pancreatoduodenectomy: A Randomized Clinical Trial

Publication: JAMA

doi: 10.1001/jama.2023.5728

Authors: D'Angelica MI, Ellis RJ, Liu JB, Brajcich BC, Gönen M, Thompson VM, Cohen ME, Seo SK, Zabor EC, Babicky ML, Bentrem DJ, Behrman SW, Bertens KA, Celinski SA, Chan CHF, Dillhoff M, Dixon MEB, Fernandez-Del Castillo C, Gholami S, House MG, Karanicolas PJ, Lavu H, Maithel SK, McAuliffe JC, Ott MJ, Reames BN, Sanford DE, Sarpel U, Scaife CL, Serrano PE, Smith T, Snyder RA, Talamonti MS, Weber SM, Yopp AC, Pitt HA, Ko CY

Jul 2021

Comprehensive Characterization of the General Surgery Residency Learning Environment and the Association with Resident Burnout

Publication: Annals of Surgery

doi: 10.1097/SLA.0000000000004796

Authors: Ellis RJ, Nicolas JD, Cheung E, Zhang L, Ma M, Turner P, Nussbaum MS, Are C, Smink DS, Etkin C, Bilimoria KY, Hu YY

Dec 2020

Variation in Hospital Utilization of Minimally Invasive Distal Pancreatectomy for Localized Pancreatic Neoplasms

Publication: Journal of Gastrointestinal Surgery

doi: 10.1007/s11605-019-04414-7

Authors: Ellis RJ, Zhang LM, Ko CY, Cohen ME, Bentrem DJ, Bilimoria KY, Yang AD, Talamonti MS, Merkow RP

Oct 2020

National Evaluation of Patient Preferences in Selecting Hospitals and Healthcare Providers. Medical Care

Publication: Medical Care

doi: 10.1097/MLR.0000000000001374

Authors: Ellis RJ, Yuce TK, Hewitt DB, Merkow RP, Kinnier CV, Johnson JK, Bilimoria KY

May 26, 2020

Prevalence, Types, and Sources of Bullying Reported by US General Surgery Residents in 2019

Publication: JAMA

doi: 10.1001/jama.2020.2901

Authors: Zhang LM, Ellis RJ, Ma M, Cheung EO, Hoyt DB, Bilimoria KY, Hu YY

Feb 2020

Failure to Administer Recommended Chemotherapy: Acceptable Variation or Cancer Care Quality Blind Spot?

Publication: BMJ Quality & Safety

doi: 10.1136/bmjqs-2019-009742

Authors: Ellis RJ, Schlick CJR, Feinglass J, Mulcahy MF, Benson AB, Kircher SM, Yang TD, Odell DD, Bilimoria K, Merkow RP

Oct 31, 2019

Discrimination, Abuse, Harassment, and Burnout in Surgical Residency Training. New England Journal of Medicine

Publication: The New England Journal of Medicine

doi: 10.1056/NEJMsa1903759

Authors: Hu YY, Ellis RJ, Hewitt DB, Yang AD, Cheung EO, Moskowitz JT, Potts JR 3rd, Buyske J, Hoyt DB, Nasca TJ, Bilimoria KY

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Ryan J. Ellis, MD, MS

Highlighted Publications