Alisa Mae Coker, MD

Neurologist Elizabeth Fracica specializes in the diagnosis, treatment and prevention of cerebrovascular disease and the diagnosis and treatment of neurovestibular and ocular motor disorders. Her clinical practice focuses on care for patients with cerebrovascular disorders as well as treatment of patients with disorders of the brainstem, cerebellum, and cranial nerves, including double vision, nystagmus and vertigo. Dr. Fracica has been involved in several initiatives focusing on institutional clinical process and guideline development to help improve care for patients with dizziness and stroke. She was also involved in the creation of a novel quality measure to rate patient harm due to emergency department misdiagnosis of dizzy patients with stroke, called the Avoid H.A.R.M.—ED Stroke/Dizziness measure. Her research has been published in high-ranking medical journals, including the Journal of the American Medical Association and Frontiers in Stroke, and she has presented her work at national conferences. She is a member of the American Heart Association and the American Academy of Neurology. Dr. Fracica earned her medical degree from the Mayo Clinic Alix School of Medicine in Rochester, Minnesota. She completed an internship in internal medicine at Johns Hopkins Bayview Medical Center, followed by residency training in neurology at The Johns Hopkins Hospital. Her fellowship training includes a vestibular and oculo-motor oto-neurology fellowship at Johns Hopkins and a vascular neurology fellowship at Massachusetts General Hospital. Dr. Fracica holds a master’s degree in public health from the Johns Hopkins Bloomberg School of Public Health. She joined the Johns Hopkins Department of Neurology faculty in 2024.

Dr. Jeanne Sheffield is the director of the Division of Maternal-Fetal Medicine and a professor in the Johns Hopkins Medicine Department of Gynecology and Obstetrics. Her areas of clinical and research expertise include medical and surgical complications of pregnancy with a focus on infectious diseases and immunizations in pregnancy. Dr. Sheffield earned her undergraduate degree from the University of Notre Dame and her medical degree from the University of Alabama at Birmingham. She did her residency in obstetrics and gynecology there, and then completed a maternal-fetal medicine fellowship at the University of Texas Southwestern Medical Center in Dallas. She joined the Johns Hopkins faculty in 2015. Dr. Sheffield serves on a number of national boards and committees. She is a member of the American College of Obstetrics and Gynecology, Alpha Omega Alpha, the American Gynecologic and Obstetrics Society, the Society of Maternal-Fetal Medicine, and the Infectious Disease Society of Obstetrics and Gynecology. She is currently on the board of directors for the Society of Maternal-Fetal Medicine and serves on the Maternal-Fetal Medicine Division of the American Board of Obstetrics and Gynecology. She works with the National Institutes of Health on national grant reviews and safety monitoring boards, and has served on several working groups focusing on improving the pregnancy research infrastructure. She acts as a pregnancy consultant to the Centers for Disease Control and Prevention and is an active member of the National Vaccine Advisory Committee. Dr. Sheffield has published many articles in obstetrics and maternal-fetal medicine journals, and written numerous textbook chapters. She is currently an editor of Williams Obstetrics, the definitive obstetrics textbook used worldwide. She is a journal reviewer for a number of peer-reviewed journals in her specialty.

Lillian Chen, M.D., M.P.H. is an instructor in the Department of Gynecology and Obstetrics at the Johns Hopkins University School of Medicine in Baltimore. Her areas of clinical expertise include general gynecology and obstetrics, contraception for patient with medically complex cases and perinatal mood disorders. Dr. Chen received her undergraduate degree from Northwestern University. Her advanced degrees include a doctorate in medicine from the Vagelos College of Physicians and Surgeons at Columbia University and a Master of Public Health from the Columbia University Mailman School of Public Health. Dr. Chen completed both an internship and her residency at the Icahn School of Medicine at the Mount Sinai Hospital in New York. Her research interests include medical education, general gynecology and obstetrics, simulation and contraception.