Dr. Ryan Paterson attended the University of Vermont School of Medicine and completed his Emergency Medicine residency and fellowship in Wilderness Medicine at Denver Health Medical Center/University of Colorado. Academic interests include expedition/altitude/mountain medicine, tropical medicine, international/global health and ethics. Dr. Paterson is a co-founder for the Wilderness Medical Society Diploma in Mountain Medicine (DiMM) course. He is the medical director for Kolkata City Mission and works towards sustainable development in Kolkata, India. Dr. Paterson is also the medical director for GlobalLimits, an international ultramarathon producer and he is the current United States delegate to the International Society of Mountain Medicine (ISMM). Dr Paterson is a practicing Emergency Physician, altitude researcher, expedition physician, medical director and guide.