Dr. Young Kwok

Matthew Ladra, M.D., M.P.H., leads the dedicated pediatric team for the Johns Hopkins Proton Therapy Center and is the director of pediatric radiation oncology for the Johns Hopkins Kimmel Cancer Center, a clinical collaboration with Children’s National Hospital, where Dr. Ladra serves as faculty in the department of pediatric oncology. He is also an assistant professor of radiation oncology and molecular radiation sciences at the Johns Hopkins School of Medicine. Listen Dr. Ladra's Cancer Matters podcast episode to learn more about his work. Previously, Dr. Ladra served as the director of pediatric radiation at the Provision Center for Proton Therapy in Tennessee. He also completed a 2-year fellowship in pediatric proton therapy at the Massachusetts General Hospital’s Francis H. Burr Proton Center. Dr. Ladra is one of a handful of radiation oncologists whose research and clinical efforts focus exclusively on pediatric patients. He is frequently invited to speak on pediatric radiation oncology topics internationally and across the U.S. and has published extensively on the subject through original research book chapters and review articles. Dr. Ladra’s research efforts focus mainly on pediatric rhabdomyosarcoma treatment, early phase clinical trials involving radiation and non-chemotherapeutic agents, and reducing neurocognitive toxicity for pediatric brain tumor patients. LinkedIn https://www.linkedin.com/in/matthew-ladra-3094a316. Dr. Ladra is rated as an Advanced provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Rhabdomyosarcoma, Muscle Invasive Bladder Cancer, Adult Soft Tissue Sarcoma, and Ependymoma.

Sahaja Acharya is the Director of Pediatric Radiation Oncology within the Department of Radiation Oncology and Molecular Radiation Sciences. She specializes in pediatric brain tumors, pediatric sarcomas, and adult sarcomas. She is also the Associate Director for the Radiation Oncology Residency Program. She leads the Pediatric Radiation Oncology program at the Johns Hopkins Hospital and treats patients at both Johns Hopkins Hospital and Sibley Memorial Hospital. She has extensive expertise in proton therapy, SBRT, pediatric malignancies, and adult sarcoma. She is the Principal Investigator on external grants from ASCO Conquer Cancer, the Department of Defense, and the Carson Leslie Foundation. She is also the Principal Investigator of phase II pediatric brain tumor clinical trials. She has been invited to participate in multiple national and international guideline committees and regularly lectures on pediatric malignancies and proton therapy. Dr. Acharya received her Bachelor's in Chemistry and Political Science from Stanford University and her medical degree from Saint Louis University. She completed radiation oncology residency at Washington University in St. Louis. Dr. Acharya is rated as an Advanced provider by MediFind in the treatment of Osteosarcoma. Her top areas of expertise are Brain Tumor, Gliomatosis Cerebri, Glioma, and Posterior Fossa Tumor.

Dan Kunaprayoon is a Radiation Oncologist in Columbia, Maryland. Dr. Kunaprayoon is rated as a Distinguished provider by MediFind in the treatment of Osteosarcoma. His top areas of expertise are Prostate Cancer, Familial Prostate Cancer, Breast Cancer, and Pleuropulmonary Blastoma.