Rebecca A. Dennis, DO

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Rebecca A. Dennis, DO, is the Associate Program Director for Fellowship, Residency and Observership Programs with the Department of Radiology and an attending radiologist at Children's Hospital of Philadelphia.

Appointments and Referrals: 1-800-TRY-CHOP (1-800-879-2467)

Education and Training

Medical School

DO - Oklahoma State University, College of Osteopathic Medicine, Tulsa, OK


Traditional Rotating Internship - University of Pittsburgh Medical Center, Mercy, Pittsburgh, PA


Diagnostic Radiology - Oklahoma State University Medical Center, Tulsa, OK


Pediatric Radiology - pChildren's Hospital of Philadelphia, Philadelphia, PA

Board Certification

Diagnostic Radiology – American Board of Radiology

Titles and Academic Titles

Pediatric Radiologist

Associate Program Director, Fellowship, Residency and Observership Programs, Department of Radiology

Assistant Professor of Clinical Radiology, Perelman School of Medicine at the University of Pennsylvania

Departments and Services




Chidambaram, A. G., Dennis, R. A., Biko, D. M., Hook, M., Allen, J., & Rapp, J. B: Clinical and radiological characteristics of e-cigarette or vaping product use associated lung injury. Emergency Radiology 27(5): 495-501, May 2020 Notes: DOI: 10.1007/s10140-020-01796-z.

Posters and Presentations


Hook, Marcus MD; Chidambaram, Ambika MD; Biko, David MD; Dennis, Rebecca DO; Rapp, Jordan MD: Imaging appearance of vaping-associated pulmonary injury. Society for Pediatric Radiology Annual Meeting & Postgraduate Course, Miami, FL (virtual) May 2020 Notes: Podium Presentation.

Ambika G. Chidambaram, Rebecca A. Dennis, David M. Biko, Marcus Hook, Julian Allen, Jordan B. Rapp: Clinical and radiological characteristics of e-cigarette or vaping product use associated lung injury. American Academy of Pediatrics National Conference (Virtual) October 2020 Notes: Poster presentation.

Rosara Bass, MD, Mary Bridget Kastl, APN, Laura Shanley, PharmD, Rebecca Dennis, DO, Maria Mascarenhas, MD, Summer L Kaplan, MD: Clinical and radiographic features associated with fluoroscopic enema success in treatment of distal intestinal obstruction syndrome in cystic fibrosis. North American Society for Pediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN) Annual Meeting and Postgraduate Course (Virtual) October 2020 Notes: Poster Presentation.

Invited Lectures


Dennis, R. A. "Pediatric Board Review", radiology residents, Einstein Healthcare Network, Philadelphia, PA. Jan 2021.

Awards and Honors

2017, 2nd Place for Scientific Exhibit, American Osteopathic College of Radiology Annual Conference
2017, Best Case Award, Genitourinary, American Institute for Radiologic Pathology

Editorial and Academic Positions

Academic and Institutional Committees

2020-present, Education Core Committee, Department of Radiology
2020-present, Quality Improvement Committee for Emergency Department Radiology Turnaround Times, Departments of Radiology and Emergency Medicine
2020-present, Education Committee, Department of Radiology
2019-present, Education Officer, Emergency (ED) Radiology Section in the Department of Radiology
2019-present, Education Officer, Gastroenterology (GI) Radiology Section in the Department of Radiology

Leadership and Memberships

Memberships in Professional Organizations


2020-present, European Society of Paediatric Radiology
2014-present, Radiological Society of North America


2020-present, American Society of Emergency Radiology
2020-present, American Institute of Ultrasound in Medicine
2017-present, American Medical Association
2016-present, Society for Pediatric Radiology
2014-present, American Roentgen Ray Society
2014-present, American Osteopathic College of Radiology
2014-present, American College of Radiology
2009-present, American Osteopathic Association