Mary Wroblewski, MD
Program Director, Pediatric Residency Program
Dr. Wroblewski specializes in general pediatrics at Johns Hopkins All Children’s Hospital. She sees patients on the hospital’s main campus in St. Petersburg, Florida. She joined the hospital staff in 2023. Dr. Wroblewski also serves as the director of the Johns Hopkins All Children’s Pediatric Residency Program.
She most recently practiced general pediatrics at the University of Toledo Medical Center in Ohio and was associate professor in the Department of Pediatrics at the University of Toledo. She also served as the pediatric residency program director.
Dr. Wroblewski earned her medical degree from the Medical College of Ohio in Toledo. She completed her residency in pediatrics and served as chief resident at the University of Toledo. She also earned master’s certificates in clinical pathology from the Medical College of Ohio and in medical education from the University of Cincinnati.

Jamee Walters, MD
Associate Program Director, Pediatric Residency Program
Dr. Walters is a pediatric hospitalist at Johns Hopkins All Children’s Hospital. She joined the hospital staff in 2022 and serves as the associate program director of the Johns Hopkins All Children’s pediatric residency program. Dr. Walters is a clinical instructor in the Department of Pediatrics at Johns Hopkins School of Medicine. She sees patients on Johns Hopkins All Children’s main campus in St. Petersburg, Florida. Dr. Walters is a graduate of the University of Miami Miller School of Medicine in Miami. She completed her pediatric residency at Rainbow Babies and Children’s Hospital in Cleveland.

Matthew Thomas, MD, FAAP
Assistant Program Director, Pediatric Residency Program Co-Director Academic Coaching Program
Dr. Thomas specializes in pediatric infectious diseases in the Department of Medicine. He serves as an assistant residency program director and is co-director of the academic coaching program within the residency program. He is seeking a Master of Education in Healthcare Professions at Johns Hopkins University School of Education. His academic interests include faculty development around academic coaching strategies and teaching methods. He joined Johns Hopkins All Children’s Hospital in 2016, after completing a fellowship in Pediatric Infectious Diseases at the University of Miami School of Medicine/Jackson Memorial Hospital. Before that, he completed his Pediatrics training and chief residency at West Virginia University/Charleston Area Medical Center. Dr. Thomas joined Johns Hopkins All Children’s Hospital in August 2016, after completing a fellowship in pediatric infectious diseases at the University of Miami School of Medicine/Jackson Memorial Medical Center. Before that, he was chief resident of pediatrics as West Virginia University/Charleston Area Medical Center.

Elizabeth Cunningham, M.D.
Chief Resident
Dr. Cunningham is a chief resident at Johns Hopkins All Children's Hospital. She earned her medical degree from Saint Louis University School of Medicine. Her clinical interests include general pediatrics, GI, developmental pediatrics, and global health.

Amanda Seibert, M.D.
Chief Resident
Dr. Seibert is a chief resident at Johns Hopkins All Children’s Hospital. She earned her medical degree from Mercer University School of Medicine. Her clinical interests include both inpatient and outpatient care, and procedural specialties.
