Meet Our Team

Dr. Clay is director of the sickle cell program in the Johns Hopkins All Children's Cancer & Blood Disorders Institute. She is an assistant professor of internal medicine and pediatrics in the Johns Hopkins University School of Medicine. Dr. Clay treats children, adolescents and young adults with rare blood disorders such as sickle cell disease and thalassemia. Trained in both pediatrics and internal medicine, she plays the key role of a physician navigator in transitioning adolescents with these diseases to adult care. She has established her research in sickle cell disease where she studies the mechanistic contribution of vitamin D deficiency and its effects of disease manifestation of sickle cell disease as well as bone disease. Her primary professional objective is to translate her clinical research to the field.

Dr. Wishnew specializes in pediatric hematology/oncology and serves as associate director of the sickle cell program in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. She joined the hospital staff in 2014. Dr. Wishnew earned her medical degree from the University of Pittsburgh School of Medicine. Dr. Wishnew trained in pediatrics through the residency program at Children’s Hospital of Pittsburgh of UPMC and completed a fellowship in pediatric hematology/oncology at Duke Children’s Hospital and Health Center.

Carrie Gann is a pediatric nurse practitioner, board-certified by Pediatric Nursing Certification Board. She joined Johns Hopkins All Children’s Hospital in June 2019. Carrie received her Doctorate of Nursing Practice from the University of Tennessee Health Science Center in Memphis, Tennessee. Carrie has many years of pediatric hematology and oncology nursing experience from St. Jude Children’s Research Hospital in Memphis. She is a member of the National Association of Pediatric Nurse Practitioners