David began working in Emergency Medical Services (EMS) in 1995, became a Nationally Registered Paramedic in 1998, and in 2001 became a Paramedic instructor/course coordinator. He was also Director of the CAAHEP accredited New England EMS Institute and Director of Emergency Management and responsible for FEMA/HSEEP planning/training at a 3000 employee level II trauma center in New England.

He’s also taught for the AHA, ITLS, and Traumatic Brain Foundation and has lectured at EMS conferences covering cardiology, toxicology, and hypoperfusion. He has served on the NH Bureau of EMS protocol sub-committee and was responsible for reviewing/rewriting patient care protocols and was named EMS Educator of the Year in NH for 2006. In 2012 David volunteered for two trips to teach First Responder programs in Georgetown, Guyana.

His research has focused on the influence of barometric pressure on the onset of signs and symptoms of acute mountain sickness (AMS) and the minimal altitudes at which AMS presents. He has taught Anatomy and Physiology and General Biology since 2010 and holds an AS in Emergency Health Sciences, BS in Biology-biomedical, and MS Biology.