"I believe in establishing a relationship with patients and families based on trust and good communication."

EDUCATION

Medical Degree
  • Drexel University College of Medicine , Philaadelphia , PA

Graduate Degree

Pediatrics
  • Children's Hospital of Pittsburg of UPMC , Pittsburgh , PA

Fellowship

Pediatric Cardiology
  • Children's Hospital of Pittsburgh of UPMC , Pittsburgh , PA

Fellowship

Senior - Interventional Cardiology
  • Boston Children's Hospital , Boston , MA

I believe in establishing a relationship with patients and families based on trust and good communication.

I will be accessible and an advocate for my patients every step of the way. A strong interest in anatomy and physiology as well as enjoyment in caring for others is what initially led me to pursue a career in medicine. As a physician, I also find reward in the ability to discover new knowledge and therapies through research as well as teach future pediatric cardiologists. Ultimately, it is the relationships I make with patients and families and the potential to make a difference in their lives the most fulfilling.

PROFESSIONAL HISTORY

Dr. Callahan was born in State College, Pennsylvania and remained local as an undergraduate at Penn State University. He subsequently attended Drexel University College of Medicine for his medical degree and completed his pediatric residency and pediatric cardiology fellowship training at the Children’s Hospital of Pittsburgh. Dr. Callahan then came to Boston Children’s Hospital where he completed a senior fellowship in interventional pediatric cardiology. As staff in the invasive cardiology division, his primary interest includes transcatheter management of congenital heart disease, with a focus on pulmonary vein stenosis and the treatment of right ventricular outflow tract dysfunction. Further, he is interested in simulation and applying it to the training of cardiology fellows in the catheterization laboratory.

PUBLICATIONS

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  1. Callahan R, Lock JE, Shah PB, Marshall AC. Transcatheter Intervention of Coronary Obstructions in Infants, Children, and Young Adults. Pediatr Cardiol. 2018 May 09. View abstract
  2. Callahan R, Kieran MW, Baird CW, Colan SD, Gauvreau K, Ireland CM, Marshall AC, Sena LM, Vargas SO, Jenkins KJ. Adjunct Targeted Biologic Inhibition Agents to Treat Aggressive Multivessel Intraluminal Pediatric Pulmonary Vein Stenosis. J Pediatr. 2018 Mar 23. View abstract
  3. Callahan R, Bergersen L, Baird CW, Porras D, Esch JJ, Lock JE, Marshall AC. Mechanism of valve failure and efficacy of reintervention through catheterization in patients with bioprosthetic valves in the pulmonary position. Ann Pediatr Cardiol. 2017 Jan-Apr; 10(1):11-17. View abstract
  4. DeWitt E, Callahan R, Blume E, Marshall A, Mah D. Trans-Fontan baffle placement of an endocardial systemic ventricular pacing lead. HeartRhythm Case Rep. 2017 Feb; 3(2):129-132. View abstract
  5. Callahan R, Bergersen L, Lock JE, Marshall AC. Transcatheter Pulmonary Valve Replacement and Acute Increase in Diastolic Pressure are Associated with Increases in Both Systolic and Diastolic Pulmonary Artery Dimensions. Pediatr Cardiol. 2017 Mar; 38(3):456-464. View abstract
  6. Callahan R, Kreutzer J, Debrunner M. Transcatheter management of mid-aortic syndrome secondary to myofibroma presenting in infancy with severe left ventricular dysfunction: a case report. Cardiol Young. 2016 Apr; 26(4):799-801. View abstract
  7. Callahan R, Trucco SM, Wearden PD, Beerman LB, Arora G, Kreutzer J. Outcomes of pediatric patients undergoing cardiac catheterization while on extracorporeal membrane oxygenation. Pediatr Cardiol. 2015 Mar; 36(3):625-32. View abstract