Nick Zenarosa


Dr. Nick Zenarosa, is Chief Medical Officer, founder and the visionary behind IES.  Zenarosa’s mission to improve the way healthcare is practiced across the continuum is driven by his passion to enhance the role of emergency medicine in value-based healthcare. He is intent on maintaining the value-system that drives the culture of excellence in this physician-led organization. Zenarosa serves as the Executive Chair of Emergency Medicine at John Peter Smith Hospital in Fort Worth where he oversees the ED, clinical decision unit, urgent care ED and Emergency Medicine Residency Program. Additionally, he is the System Medical Director of emergency services for Baylor Scott & White Health. Zenarosa has overseen more than 20 regional and system-level initiatives for more than one million patient visits annually. Zenarosa’s career in emergency medicine began in 1995. Since then he has served as both faculty and attending staff at multiple teaching and trauma centers throughout Texas and is currently practicing at Baylor University Medical Center at Dallas, John Peter Smith Hospital, and Baylor Scott & White Medical Center – McKinney. A fellow of the American College of Emergency Physicians, Zenarosa received his medical degree from the University of Illinois at Chicago College of Medicine. He completed an internal medicine residency at Parkland Memorial Hospital in Dallas and an emergency medicine residency at Carolinas Medical Center in Charlotte, where he was also the Chief Resident. Board-certified by the American Board of Emergency Medicine and the American Board of Internal Medicine, Zenarosa also holds a master’s degree in molecular biology and a bachelor’s degree in human physiology, both from the University of Illinois

Liz Fagan


Dr. Liz Fagan is the emergency department medical director at Baylor Scott & White Medical Center – McKinney. After graduating from the University of Oklahoma, she completed an emergency medicine residency and administrative emergency medicine fellowship at Orlando Regional Medical Center. Serving as the director of education for IES, one of her proudest achievements has been to create and teach the High Reliability-High Risk/Low Frequency Critical Procedure course which helps to ensure IES physicians and advanced practice providers maintain competency in lifesaving procedures. As director of IES’s BEST EMS, she designed a comprehensive continuing education program for partner fire department personnel. Collaborating with the McKinney Fire Department, she helped create a fire-based community health paramedicine program which has been used by fire departments nationwide. In 2014, the Institute for Healthcare Improvement asked Fagan and the McKinney Community Healthcare Program to present a leadership lab on creating community health paramedicine programs.


Dr. (Jo) Jyothindran is a board-certified Emergency Physician who has been practicing in the DFW metro area, as well as in Central Texas (Waco) for the last 5 years. She completed her healthcare administration fellowship in Dallas and has since been Assistant Medical Director at Baylor Scott and White – Garland, where she successfully led multiple patient satisfaction and quality improvement projects. She has been the recipient of two Five Star service awards for her compassionate patient care. She is currently the System Director for Clinician Wellness at Integrative Emergency Services and oversees the wellness program for more than 600 providers. In addition, she is a medical director for BEST EMS since 2017 – and has been involved with mobile medicine by advising the community health paramedicine.