Meet Our Team
Executive Directors
Asa Margolis, DO, MPH, MS, FACEP, FAEMS
Associate Professor of Emergency Medicine
Dr. Asa Margolis has a passion for out-of-hospital medicine and education serving as Program Director of the Johns Hopkins Emergency Medical Services Fellowship, Medical Director of the Johns Hopkins Lifeline Critical Care Transport Program, Associate Medical Director of the Howard County Department of Fire and Rescue Services, and Deputy Medical Director of the United States Secret Service.
Shawn Trautman, RN, BSN, CCRN, CFRN
Nurse Manager, Lifeline Critical Care Transport Program & Johns Hopkins Bayview Neuroscience
Shawn Trautman is an experienced clinical leader, leading teams at Johns Hopkins Hospital and Johns Hopkins Bayview. Shawn has a passion for building high performing teams, developing leaders, innovation, and implementing cutting edge clinical care.
Directors
Eric Garfinkel, DO
Assistant Professor of Emergency Medicine
Co-director of Clinical Innovations
Dr. Eric Garfinkel started his career in EMS as a volunteer EMT in Pennsylvania and is now a board-certified physician in Emergency Medicine and Emergency Medical Services. He is currently an Assistant Professor of Emergency Medicine at Johns Hopkins University, Assistant Medical Director at Johns Hopkins Lifeline, and Assistant Medical Director at Howard County Department of Fire & Rescue Services. His focus is on education and prehospital airway management.
Heidi Hubble, MHA
Director of Operations, Lifeline Critical Care Transport Program
Heidi Hubble has extensive experience in Emergency Medical Services and leadership starting her career as an EMS clinician before transition to a Communications Supervisor for Lifeline, and ultimately the Director of Operations.
Matthew Levy, DO, MSc, FACEP, FAEMS
Director of Prehospital Medicine
Dr. Matthew Levy has leadership roles within Johns Hopkins Emergency Medicine and Maryland’s EMS system. He is also chair of the national non-profit Stop the Bleed Coalition. In addition, he actively participates in various local, state, federal, and international organizations related to prehospital, operational, and disaster medical care.
Sam Matta, RN, BSN, CFRN, NRP
Lead Clinical Nurse, Lifeline Critical Care Transport Program
Director of Education
Sam Matta has spent the past two decades as an emergency/critical care nurse, including the first 4 years with the U.S. Army. Sam has always had a passion for education and was a founding member of a non-profit with the mission of offering low or no cost education to the public safety aviation community.
Corina Noje, MD
Dr. Noje is a pediatric critical care clinician, educator, and program builder with expertise in pediatric critical care transport medicine. She is the Medical Director for the Johns Hopkins Pediatric Transport program.
Lukas Ramcharran, MD, MBA
Assistant Professor of Emergency Medicine
Co-director of Clinical Innovations
Dr. Ramcharran is a board-certified and practicing emergency physician, medical device consultant, and medical director for a healthcare analytics firm. Dr. Ramcharran focuses on clinical innovation opportunities.
Arissa Torre, MD, MHS
Director of Ultrasound
Dr. Arissa Torrie is a board-certified anesthesiologist with a combined focus of Trauma Anesthesiology and Regional Anesthesiology implementing a comprehensive application of POCUS (Point-of-Care Ultrasound) for resuscitative and transport critical care medicine.
Ruben Troncoso, MD, MPH
Director of Research
Dr. Ruben Troncoso is board certified in Emergency Medicine and currently serves as the Assistant Medical Director for the Johns Hopkins Lifeline Critical Care Transport Program. His goal is to identify and improve the delivery of life saving interventions by facilitating collaborative research across multiple disciplines.
Faculty
Chad Bowman, RN, MSN, CCRN, CFRN
Sarah Beth Burton, RN, MSN, CCRN, CFRN, PHRN
Philomena (Phil) Costabile, RN, BSN
Jeremiah Hinson, MD, PhD
Gabe Kelen, MD, FRCP(C), FACEP
Stephanie Kemp, MD
Scott Lassahn, RN, BSN, CCRN, NRP
James Scheulen, PA, MBA
Nelson Tang, MD
Juliana Zschoche, PharmD, BCPS, BCEMP
Trainees
Kelly Jiang, BS, EMT
Emily Larson, BS, EMT
Christopher Wend, MD, NRP
Hannah Fuher, MD
Resident Physician, Emergency Medicine
Harry Flaster, MD
Alexandra Vaughn, MD
