Dr. Fitzgibbons is Board Certified in Internal Medicine and Infectious Diseases, is a faculty physician with the internal medicine residency at Santa Barbara Cottage Hospital, and oversees the HIV and Infectious Disease clinic at the Santa Barbara County Public Health Department. She has a particular interest in HIV medicine in underserved populations, having spent a year as a volunteer clinical faculty in Mbarara, Uganda prior to completing her Infectious Disease training. She has been associated with the Cottage Health residency program since 2015, and joined the permanent faculty in 2016. Dr. Fitzgibbons is also a Clinical Associate Professor of Medicine at USC and the Director of Research and Quality for the Internal Medicine Residency Program at Cottage. She has enjoyed a tenure as the chair of the Cottage IRB, and currently serves as the vice-Chair. During the COVID-19 epidemic, she worked closely with SB County Public Health Department and the leadership at Cottage Health on many aspects of the clinical and public health response, with an emphasis on education, clinical care and policy work.