Capt. Mulligan is a native of Lawrenceville, N.J. She attended Harvard College where she earned a bachelor’s degree in Biology in 1989. From there, she attended the Uniformed Services University of the Health Sciences where she earned her medical degree. After completing her surgical internship at the National Naval Medical Center (NNMC), she spent a year as a general medical officer with 3rd Force Service Support Group (FSSG) in Okinawa, Japan.
Upon her return she entered the Neurosurgical residency at NNMC and subsequently completed a fellowship in Epilepsy Surgery from Yale University in 2000. Mulligan served in various capacities at NNMC between 2000 and 2013 to include serving as a staff surgeon and the director of Functional and Epilepsy Surgery as a member of the teaching faculty for the combined National Capital Consortium Neurosurgery residency. Mulligan deployed in support of Operation Iraqi Freedom in the spring of 2003 aboard USNS Comfort (T-AH 20), then returned to resume her previous duties.
In 2004, she became the department head of neurosurgery and shortly thereafter was named the associate program director for the residency. In 2006, she became the Specialty Leader for Neurosurgery and in 2008 became the first integrated Neurosurgery Service Chief, responsible for both NNMC and Walter Reed Army Medical Center (WRAMC) Neurosurgery Services. From 2009 to 2010 she served as the Executive Committee of the Medical Staff (ECOMS) chair at NNMC. From 2011 to 2013, she served as the Deputy Commander for Surgery, overseeing the final integration of surgical services at WRAMC and NNMC culminating in the opening of the Walter Reed National Military Medical Center (WRNMMC).
Mulligan served as Deputy Commander/Executive Officer, Naval Medical Center San Diego from July 2013 until assuming the duties as the Commanding Officer of Naval Hospital Camp Pendleton July 10, 2015. She completed her command tour June 2017 and served as the Chief Medical Officer and Assistant Deputy Chief of High Reliability, Quality, and Patient Safety at the Bureau of Medicine and Surgery in Falls Church, VA and subsequently as the High Reliability lead for the transitional Intermediate Management Organization of the Defense Health Agency. Following that tour, she assumed command of Naval Medical Center Portsmouth in July, 2019.
Mulligan’s awards include the Legion of Merit Medal with Gold Star, Meritorious Service Medal with Gold Star, Joint Service Achievement Medal, Navy Achievement Medal and numerous unit and deployment awards.