About Us

​​​​​Capt. Michael G. Mercado 

Medical Corps, U.S. Navy
Director, U.S. Naval Hospital Rota
Commanding Officer, U.S. Navy Medicine
            Readiness & Training Command, Rota                

Capt. Michael Mercado entered naval service via the Health Professional Scholarship Program and earned his Doctor of Medicine from Loma Linda University in 2004. In 2007, he completed a residency in Family Medicine at Naval Hospital Camp Pendleton.

He most recently served as Executive Officer, U.S. Navy Medicine Readiness & Training Command Sigonella, Italy; Detachment Souda Bay, Greece; and U.S. Navy Medicine Readiness & Training Unit, Bahrain.

His staff assignments include Director of Force Medical Readiness (N34), Bureau of Medicine & Surgery; Director of Medical Services, Naval Hospital Bremerton; Associate Director, Family Medicine Residency Program, NHCP; and Department Head of Family Medicine, U.S. Naval Hospital Guam.

Operationally, Mercado served as Regimental Surgeon, 6th Marine Regiment, Second Marine Division; he deployed as an embedded medical advisor to the 1st Brigade, 203rd Corps, Afghan National Army (ANA), Afghanistan Regional Security Integration Command-East during Operation Enduring Freedom; and as Task Force Surgeon, Task Force Southwest, Rotation 1 in support of Operation Freedom Sentinel and Resolute Support Mission, where he advised the Medical Commander, 215th Corps, ANA, on health service support delivery and tactical combat casualty care training in support of kinetic operations in Helmand province.

A committed educator, Mercado served as core residency faculty at NHCP, and teaching consultant at the Camp Lejeune and Fort Belvoir Family Medicine residency programs. He has a faculty appointment to the Uniformed Services University of the Health Sciences as an Assistant Professor of Family Medicine, and he has authored numerous peer-reviewed publications.

Mercado is a diplomate of the American Board of Family Medicine, a Fellow of the American Academy of Family Physicians, and a member of the Uniformed Services Academy of Family Physicians where he served on the Board of Directors from 2016-2019. He is the recipient of the Arnold P. Gold Foundation Humanism in Medicine Award for the Military Health System, NHCP Family Medicine Staff of the Year, Uniformed Services Academy of Family Physicians President’s Award, Department of Defense Innovation Award, and the Surgeon General’s Team Power Award.

His military decorations include the Legion of Merit, Meritorious Service Medal (four awards), Navy and Marine Corps Commendation Medal (two awards), Combat Action Ribbon, Military Outstanding Volunteer Service Medal (two awards), in addition to other personal and unit awards

                                                                                                                                                                                                                                                                                                               

Patricia D. Butler

Capt., Nurse Corps, U.S. Navy

Executive Officer, U.S. Navy Medicine Readiness & Training Command, Rota

Capt. Patricia Butler currently serves as the Executive Officer of U.S. Naval Hospital Rota, Spain. She enlisted in the United States Marine Corps in 1991, serving as a Combat Correspondent until 1999. She completed tours of duty with the Air Force Pacific Broadcasting Squadron, Iwakuni, Japan, and the Marine Corps Security Force Company, Rota, Spain, earning Military Broadcaster of the Year, and two coveted Department of Defense awards for journalism excellence.

In 1999, she earned a Bachelor of Arts from University of Maryland’s European Division, followed by a Bachelor of Science in Nursing from Christopher Newport University, Newport News, VA. In 2004, she was commissioned as an Ensign through the Navy’s Nurse Candidate Program, and reported to Officer Indoctrination School, Newport, RI, where she received the Eadie Leadership Award for the highest combined achievement in academics and military leadership.

In 2004, she reported to Naval Medical Center, Portsmouth, VA and was assigned as staff nurse, Internal Medicine, then Labor and Delivery. In 2007, she transferred to Naval Hospital, Sigonella, Italy, serving as Division Officer, Multi-Service Ward. While there, she was named Junior Officer of the Year (2009), and earned a Master of Science in Nursing degree in Community Health and Wellness (2010).

Selected to attend Duty Under Instruction at University of Washington (UW), she completed a second master's degree in 2012. She reported to Naval Hospital Bremerton and subsequently deployed aboard the USS PEARL HARBOR (LSD 52) in support of Pacific Partnership 2013. While there she earned a Doctor of Nursing Practice degree from UW (2014), and was selected as the Assistant Specialty Leader for Maternal Infant and Neonatal Critical Care Nursing. In June 2015, she reported to Naval Medical Center San Diego and served as Division Officer, Labor and Delivery. In 2016, she was appointed as the Navy Surgeon General’s Specialty Leader, Maternal Infant and Neonatal Critical Care Nursing.

In 2018, she reported to U.S. Naval Hospital Naples, Italy to serve as Special Assistant, Quality Management Department Head. There she led a “Crisis Capacity Bed Expansion” project to align with the regional operational mission, and served as quality lead for a technical assist visit to Expeditionary Medical Facility Camp Lemonnier, Djibouti. She completed her successful Specialty Leader tenure, and continued to advance nursing science through evidence-based practice (EBP) initiatives as a member of the Tri-Service Nursing Research Program European EBP faculty team.

In August 2021, she reported to Navy Medicine Readiness and Training Unit (NMRTU) Groton, CT as Director, Warfighter Optimization, and provided regular seamless coverage as Acting Officer in Charge, NMRTU Groton, and Interim Chief Nursing Officer and Acting Executive Officer, Navy Medicine Readiness and Training Command New England, Newport, RI. There, she completed Joint Professional Military Education Phase I through the Naval War College in 2021. Slated for career milestone, she reported to U.S. Navy Medicine Readiness and Training Command Guam in May 2023 as the Chief Nursing Officer and Director for Nursing Services. Recognized for her career impact, she was the recipient of the 2025 MHS Senior Nursing Leadership Excellence Award and the DAISY Lifetime Achievement Award in 2026.

Capt. Butler's military decorations include the Meritorious Service Medal (two awards), Navy and Marine Corps Commendation Medal (five awards), Air Force Commendation Medal, Navy and Marine Corps Achievement Medal, and Marine Corps Good Conduct Medal (two awards).

​​​​​Master Chief Wasim S. Mohamed  

HMCM (SW/EXW/FMF), United States Navy
Command Master Chief, U.S. Navy Medicine Readiness & Training Command, Rota /U.S. Naval Hospital Rota                

Master Chief Petty Officer Wasim S. Mohamed enlisted in the Navy in February 1998. Following graduation from basic training at Recruit Training Command, Great Lakes, Illinois, he reported to Hospital Corpsman (HM) A School. He later graduated from Fleet Marine Force Training in Delmar, California.

Master Chief Mohamed afloat and overseas tours includes Expeditionary Strike Group Seven Detachment Sasebo, Japan, Naval Special Warfare Group TWO Logistics Support Unit, SEAL Team EIGHT, USS FARRAGUT (DDG 99), USS DEWERT (FFG 45), NSA Souda Bay, Greece, 3rd Medical Battalion Camp Hansen Okinawa, Japan, and Individual Augmentee assigned to Joint Task Force Guantanamo Bay, Cuba.

Ashore tours include Naval Branch Health Clinic Mayport, Florida, Independent Duty Corpsman School San Diego, California, Branch Health Clinic Quantico, Virginia, Pharmacy Technician School Portsmouth, Virginia.

Master Chief Mohamed is a graduate of the Navy Senior Enlisted Academy Class 241. He is designated Surface Warfare, Expeditionary Warfare Specialist, and Fleet Marine Force. He is authorized to wear the Meritorious Service Medal, Navy and Marine Corps Commendation Medal (6th Award), Army Commendation, Navy and Marine Corps Achievement Medal and various unit and campaign awards.

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