Richard Jonas, MD

Michael Keller, M.D., is a pediatric immunologist at Children's National Hospital and specializes in the diagnosis and treatment of primary and secondary immunodeficiency disorders. He is the Director of the Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiency Disorders. He has authored many peer-reviewed articles and contributed to expert consensus guidelines on the treatment and diagnosis of primary immunodeficiency disorders. Dr. Keller is a member of theamerican Academy of Allergy, Asthma, and Immunology (AAAAI); the Clinical Immunology Society; the European Society of Immunodeficiency; and the Primary Immunodeficiency Treatment Consortium (PIDTC).

Priya Vaidyanathan, M.D., is a board-certified pediatric endocrinologist who has been on the staff of the Children's National Hospital since December 2005 soon after completing her pediatric endocrinology fellowship. She is the Director of the Thyroid Nodule and Cancer Program and Associate Director, Endocrinology Fellowship. She provides clinical care to patients with diverse endocrine needs, and her research interest is in the field of thyroid disorders.

John Myseros, M.D., came to Children’s National Hospital from Cincinnati Children’s Hospital in 2004. As Vice Chief and Professor of Neurosurgery, he cares for all children with neurosurgical diseases, with particular interest in the surgical treatment of tumors of the brain and spinal cord, chiari malformations, spina bifida and tethered cords, as well as vascular malformations and craniosynostosis. He has published on all of these conditions, and is an integral part of the dynamic and cutting-edge neurosurgical department at Children’s National. He is passionate about the care of our patients and their families.