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Health Services

Headquarters Marine Corps


William P. Nash, M.D., returned to the service of the United States Marine Corps as its Director of Psychological Health in May 2015.  The last two assignments in his 30-year career as an active duty Navy psychiatrist were with the 1st Marine Division, forward-deployed to the Al Anbar Province of Iraq in 2004-2005, and at Headquarters, Marine Corps, in the Combat and Operational Stress Control branch of Manpower and Reserve Affairs, from 2005 to 2008.  After his retirement in May 2008, Dr. Nash continued to collaborate with DoD and VA partners to conduct research on combat-related posttraumatic stress disorder (PTSD) and its clinical cousins, moral injury and loss, and to develop tools for the prevention, identification, and treatment of stress-related problems in war veterans.  He was the principle author of the current Navy and Marine Corps doctrine for Combat and Operational Stress Control, published in December, 2010, as MCRP 6-11C/NTTP 1-15M.


Bill Nash grew up on the South Side of Chicago as the second of six children in a blue collar family.  He received a B.S. in chemistry in 1974 and a Doctor of Medicine degree in 1978, both from the University of Illinois in Chicago.  He participated in the Health Professions Scholarship Program during his final three years of medical school, and was commissioned as a lieutenant in the Navy Medical Corps upon graduation in 1978.  After a basic surgery internship at Naval Medical Center, San Diego, he received training in aerospace medicine and served one tour as a Naval Flight Surgeon at Naval Air Facility, Detroit.  There he was awarded a Navy Commendation Medal for Heroic Achievement after participating in aerial search and rescue on the Great Lakes with the Coast Guard.  Dr. Nash then returned to Naval Medical Center, San Diego, for residency training in psychiatry from 1982 to 1985.  In subsequent tours as a Navy psychiatrist, he directed two Navy psychiatry residency programs and served as the Specialty Leader for Navy Psychiatry and as the Director of Clinical Services aboard the hospital ship, USNS MERCY (T-AH 19).  He was honored as Teacher of the Year by his trainees on three separate occasions, and was awarded the H. James T. Sears Award for career excellence in Navy Psychiatry.


Dr. Nash’s military awards include the Legion of Merit, the Bronze Star, and three Navy Commendation medals.  He was the founding chair of the Military Committee of the Group for Advancement of Psychiatry, and served as a member of the Institute of Medicine’s Committee to Evaluate the Effectiveness of PTSD Treatment in DoD and the VA.  He co-chaired the Joint Staff High Risk Behavior Working Group, whose final report was submitted to the CJCS in June 2015.  He has published dozens of peer-reviewed papers and book chapters, and has co-authored two books on combat-related stress injuries and their treatment.

Director of Pyschological Health

Dr. William Nash 

Director of Psychological Health

(703) 604-4604