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Command Master Chief Tyrone WillisCOMMAND MASTER CHIEF SEAN L. BROWN
Command Master Chief, United States Navy
Walter Reed National Military Medical Center

Master Chief Sean Brown is a native of Victoria, Texas. He holds a Bachelor of Science degree (Health Care Administration) and is currently working on a Masters of Administrative Leadership through the University of Oklahoma.
He originally enlisted in the Army National Guard in December of 1990 while still in high school, attending both basic training and AIT at Fort Knox, KY for MOS 19E (M60A3 Tanker Crewman.) Master Chief Brown enlisted in the Navy in July 1992; attended Basic Training, Storekeeper A School, and Basic Enlisted Submarine School before reporting to USS Cavalla (SSN 684). He then attended Hospital Corpsman A school and upon graduation was assigned to Fleet Surgical Team Three, USS Peleliu (LHA 5). CMDCM Brown attended Surface Force Independent Duty Corpsman C School, was meritoriously promoted to HM1, subsequently reporting to USS Juneau (LPD 10). After this tour he reported to 2D Marine Division where he served with 2D Combat Engineer Battalion, 2D Light Armored Reconnaissance Battalion as well as deploying to Ramadi, Iraq from February to October 2006 with 3rd Battalion, 8th Marines in support of Operation Iraqi Freedom. He then served as an instructor and Medical Department LCPO at the Naval School for Explosive Ordnance Disposal. He transferred to USS BATAAN (LHD 5) and served as the Medical Department LCPO. CMDCM Brown was selected for the Command Senior Chief program and spent one year on Individual Augmentee orders assigned to MCM CREW OLYMPIAN embarked in USS Chief (MCM 14) and USS Dextrous (MCM 13). CMDCM Brown then reported to MCM Crew DOMINANT embarked in USS Champion (MCM 4). He then served as the Command Master Chief onboard USS NITZE (DDG 94) from May 2015 to June 2017. Master Chief Brown currently serves as the Senior Enlisted Leader for both Walter Reed National Military Medical Center as well the National Capital Region Medical Directorate.
CMDCM Brown is a graduate of Navy Dive School, Field Medical Service School, and the Army Airborne Course. He is a Master Training Specialist and graduate of the Senior Enlisted Academy (Class 153) as well as the CMC/COB Course.
Master Chief Brown’s personal awards include the Joint Service Commendation Medal, Navy Commendation Medal (3 awards), Army Commendation Medal, Navy Achievement Medal (4 awards), Combat Action Ribbon (2 awards), Army Combat Medical Badge, and various campaign and unit awards.