Clinical Professor of Anesthesiology at UC San Diego School of Medicine and an attending on the Liver Transplant Anesthesiology Team at Rady Children's Hospital, Mark Greenberg, MD trained through three consecutive UCSD programs — pediatric residency 1988-1990, neonatal-perinatal medicine fellowship through 1993, and anesthesiology residency through 1996 — after earning his medical degree from Emory University School of Medicine in 1987. His pediatric anesthesia practice at UCSD Hillcrest at 200 W Arbor Dr covers operating room and ICU management for infants through adolescents, with imaging and perioperative workups routed through UCSD Medical Center Rad for MRI and CT scans performed under general anesthesia or sedation. Board certifications in Anesthesiology and Pediatric Anesthesiology support his role in cases involving airway management for Trisomy 21 patients, oculocardiac reflex monitoring during pediatric strabismus surgery, and liver transplant induction and emergence. He co-created the Rescue Me CPR! app with UCSD medical student Brennan Marsh-Armstrong, an American Heart Association-aligned basic life support tool designed for real-time use during opioid overdose and cardiac arrest by untrained bystanders. Extended post-operative ventilator weaning and long-term acute care after complex surgical cases step down to facilities including Select Specialty Hospital - San Diego for patients transitioning out of the surgical ICU. The most technically demanding cases he manages are pediatric liver transplants, which require hemodynamic monitoring through graft reperfusion, massive transfusion protocols, and coagulopathy management in children weighing as little as ten kilograms.