DAN Speakers

Francois Burman, Pr.Eng., M.Sc.

is the Director of Risk Mitigation at DAN. He is responsible for all of DAN’s safety and accident-prevention initiatives as well as the recompression chamber network. He has traveled around the world to conduct safety assessments at facilities used to treat injured divers and has written two books: The Risk Assessment Guide for Dive Operators and Professionals, and The Risk Assessment Guide for Recompression Facilities.


Jim Gunderson

is a member of DAN’s risk mitigation team and oversees DAN Training. Jim’s diving career began in 1986 in his hometown of Casper, Wyoming. He holds degrees in marine science from the University of Hawaii at Hilo and in psychology from the University of Wyoming. He holds scuba certifications from PADI and NAUI and has an inactive AAUS rating. Jim is a NAUI Course Director Trainer and a DAN Examiner.


Matias Nochetto, M.D

is the Director of Medical Services at DAN, where he has worked since 2006. He is co-director of the DAN-UHMS continuing medical education program and a faculty member of several national and international diving medicine courses and programs. He became a dive instructor (1999) during medical school, which led him to complete a three-year clinical and research fellowship in hyperbaric and diving medicine to combine the two passions.

Contact: Ask a Medic

Camilo Saraiva, M.D., MBA

is the Assistant Director of Medical Services at DAN. He is board certified in radiation oncology and hyperbaric medicine and is a former director of the Brazilian Hyperbaric Medical Society. Dr. Saraiva is a member of the Undersea and Hyperbaric Medical Society and the American College of Healthcare Executives. A former cave diver, he has been a PADI divemaster since 2000.

Contact: Ask a Medic

Frauke Tillmans, Ph.D.

is the Research Director at DAN. She has a degree in human biology and a Ph.D. in oxidative stress, a condition associated with acute diving injuries. Dr. Tillmans is an experienced public safety diver, scientific diver, and dive safety officer. She has worked as a researcher in global collaborative projects focused on decompression stress, inert gas narcosis, and oxygen toxicity and was employed by the German Navy before she began working at DAN in 2019.


Guest Speakers

James Holm, M.D.

is the Medical Director at the Center for Hyperbaric Medicine at Virginia Mason Medical Center in Seattle, Washington and a past president of the Undersea and Hyperbaric Medical Society (UHMS). Dr. Holm has been a certified diver since 1969 and an instructor since 1978. His research interests include decompression illness, iatrogenic gas embolism, carbon monoxide poisoning, and the use of hyperbaric oxygen to treat chronic radiation tissue injury.

Richie Kohler

is a filmmaker, author, and explorer who has spent the past 40 years identifying and diving on lost shipwrecks around the globe. Kohler has explored some of the world’s most famous wrecks, and he focuses on the human aspect of shipwreck tragedies, seeking answers and closure for families. He has produced and hosted numerous television series and is committed to the historical preservation of the ocean’s wreck resources.