Dr. Jerald Cook
VP/Chief Medical Officer

Jerald Cook, MD is a Commander in the US Navy. He served 13 years in the Navy Nuclear Propulsion Program, onboard fast attack submarines, before commissioning into the Navy Nurse Corps. He then transferred to the Navy Medical Corps and went to medical school at the Uniformed Services University of the Health Sciences in Bethesda, MD. Following medical school, he completed an internship in Psychiatry at Naval Medical Center San Diego, and then residency training in Occupational and Environmental Medicine at the University of California at Irvine. He also obtained his MS in Environmental Toxicology from the UC Irvine, School of Medicine. He is dual board certified in the specialties of Occupational Medicine, and in Public Health and General Preventive Medicine. He is in active clinical practice which includes examining and treating workers with musculoskeletal injuries and those with potential exposures to chemicals, infectious diseases, physical hazards, addictions and social stressors. His work includes routine work site inspections and ones following incidents requiring investigations. He has published articles and contributed to textbooks in topics in occupational medicine. He frequently provides lectures to various audiences in areas of risk management and leadership. He is a skilled expert in disability and regarding difficult return to work and fitness for work assessments for injured and impaired workers.

Dr. Cook is an avid athlete, having completed 10 Ironman triathlons and over 100 marathons. He is a Certified Ironman Coach and has utilized his passion and knowledge of human physical performance in bringing injured workers back to baseline functioning and beyond.
Dr. Mason Harrell

Harvard-trained, double board-certified physician in Occupational Medicine, and Public Health and Preventive Medicine. Medical expert work with the Massachusetts Institute of Technology (M.I.T.), and the World Health Organization (WHO). He is a graduate of the U.S. Military Medical School, USUHS, in Bethesda Maryland. During medical school, Dr. Harrell investigated Dengue Fever in Iquitos Peru, and worked for two months in Mexico City at the Federal Hospital. After completing a Transitional Internship, Dr. Harrell traveled with a team of physicians to Kampala, Ghana to distribute medical supplies and lead think-tank discussions on addressing malaria. Dr. Harrell was winged a Naval Flight Surgeon in 2010 and served as the Base Flight Surgeon and Department Head of Aerospace Medicine of U.S. Naval Air Station Sigonella, Italy. He served as the NATO medical liaison during the Libya conflict of 2011, and deployed to Uganda with the Marines. While at the Harvard School of Public Health, he completed his Masters Degree of Public Health and Medical Occupational and Environmental Medicine residency. Dr. Harrell’s residency included research and work with the World Health Organization Headquarters, Massachusetts Institute of Technology (MIT) Lincoln Laboratories, the Massachusetts Department of Public Health, and Liberty Mutual Insurance. Dr. Harrell is currently the Medical Department Head and Flight Surgeon of the Naval Operations Support Command, North Island and VR-57. He supervises 8 physicians, 15 nurses, 2 physician assistants (military equivalent) and 50 medical technicians (corpsmen). He is a Medical Advisory Board Member for ACOEM/MDGuidelines and a chapter author for ACOEM’s Occupational Health Guide. for MDGuidelines.

He is a Medical Advisory Board Member for ACOEM/MDGuidelines and a chapter author for ACOEM’s Occupational Health Guide. for MDGuidelines. He is a volunteer "House Doctor" for the San Diego Symphony and continues research with the WHO on Ebola infections in Health Care Workers. He is a proud husband of Rossella and the honored father of his daughter Celine and Eleanor.