Health Services


Health Services

Headquarters Marine Corps

A native of Nashville, Tennessee, Commander Hollis, Medical Corps, United States Navy, received a Bachelor of Science degree with a major in biology as well as a Bachelor of Arts degree as a College Scholar from the University of Tennessee, Knoxville in 1995. After being commissioned an ensign in the United States Navy, he earned the degree of Doctor of Medicine in December of 1999 from the University of Tennessee, Memphis. Following graduation, he completed an Internal Medicine internship at the National Naval Medical Center in Bethesda, Md. Subsequently, he was assigned as a general medical officer and “plank owner” for the USS Ronald Reagan. From there, CDR Hollis ran an acute care clinic at Naval Hospital Keflavik, Iceland before taking orders to 2D Marine Division at Camp Lejeune, NC. During this period he deployed in support of Operation Iraqi Freedom on multiple occasions as the 3/8 Battalion and 22d Marine Expeditionary Unit Surgeon. From there, CDR Hollis completed his Masters in Public Health and Preventive Medicine specialty training in August of 2010 as the chief resident from the Uniformed Services University of the Health Sciences, School of Medicine in Bethesda, Md.

Upon graduation CDR Hollis served as the III Marine Expeditionary Force’s Preventive Medicine Officer until July 2013. He is the author of multiple peer-reviewed publications and has been a participant in multiple humanitarian relief missions to include operations in Bangladesh, the Philippines and mainland Japan. He has served as a lead instructor of pandemic preparedness and all-hazards events throughout West Africa, the Lower Mekong region, as well as in Indonesia, Malaysia, Bangladesh and Nepal. CDR Hollis is the most recent recipient of the prestigious Department of Defense-wide Hunter-Strickland award for Excellence in Deployed Preventive Medicine.

Commander Hollis is currently serving at HQMC HS as the as the Director of Public Health and Preventive Medicine for the Marine Corps. He is married (Anne) and has one daughter (Elizabeth).

Director of Preventive Medicine

CDR Ewell "Trey" Hollis

Medical Corps, U.S. Navy