Dr. Howard Lederman is a professor of pediatrics at the Johns Hopkins University School of Medicine. He is the director of the Immunodeficiency Clinic, the Pediatric Immunology Laboratory, and the Ataxia-Telangiectasia (A-T) Clinical Center. Dr. Lederman specializes in the evaluation, diagnostic testing and long-term management of patients of all ages who have known or suspected primary immunodeficiency diseases. He is an expert on the use of gamma globulin therapy for a wide variety of disorders. After receiving his M.D. and Ph.D. from the University of Michigan, Dr. Lederman came to Johns Hopkins Children’s Center for a residency in pediatrics, followed by a fellowship in immunology at the Hospital for Sick Children in Toronto. Dr. Lederman’s current research laboratory and clinical research focuses on better understanding and treating patients with ataxia-telangiectasia, a devastating neurological disorder for which there is no cure. He is a member of numerous professional societies, including American Association of Immunologists, the American Society for Microbiology and the Clinical Immunology Society. Dr. Lederman is rated as an Advanced provider by MediFind in the treatment of X-Linked Agammaglobulinemia. His top areas of expertise are Common Variable Immune Deficiency, X-Linked Agammaglobulinemia, Immunodeficiency with Hyper IgM Type 1, and Hyper IgE Syndrome.

William Houck is an Oncologist in Baltimore, Maryland. Dr. Houck is rated as an Experienced provider by MediFind in the treatment of X-Linked Agammaglobulinemia. His top areas of expertise are Paget Disease of the Breast, Lung Cancer, Chronic B-Cell Leukemia (CBCL), and Chronic Lymphocytic Leukemia (CLL).

"Dr. Ari D. Fishman is a hematologist affiliated with Sibley Memorial Hospital, Holy Cross Hospital and George Washington University Hospital, where he serves as an assistant professor of medicine for the School of Medicine. He practices out of Maryland Oncology and Hematology, located in Wheaton, Maryland and Silver Spring, Maryland. Dr. Fishman earned his medical degree from Sackler School of Medicine. He completed a residency in internal medicine at the Beth Israel Medical Center, followed by a fellowship in hematology and oncology at the Montefiore Medical Center. Dr. Fishman previously worked at Washington Oncology Hematology Center, located in Washington, D.C. and Chevy Chase, Maryland. Dr. Fishman has been named a Top Doctor in Hematology and Oncology by Washingtonian Magazine and a Top Doctor by Consumers’ Checkbook magazine. Dr. Fishman is a member of the American College of Physicians and the American Society of Clinical Oncology. Dr. Fishman has contributed to numerous publications. Selected Publications Fishman AD, Hoffman A, Volterra F, Frymus M, Gentilluci M. ""Intracaval and intracardiac metastatic nonseminomatous germ cell tumor: a rare cause of hemolytic anemia and thrombocytopenia."" Cancer Invest. 2002;20(7-8):996-1001.". Dr. Fishman is rated as an Experienced provider by MediFind in the treatment of X-Linked Agammaglobulinemia. His top areas of expertise are Schnitzler Syndrome, Monoclonal Gammopathy of Undetermined Significance (MGUS), Myelodysplastic Syndrome (MDS), and Childhood Iron Deficiency Anemia.

"George A. Sotos, M.D., is the chief of hematology and oncology at Suburban Hospital, as well as a member of Suburban's Cancer Committee and the coordinator of Multidisciplinary Cancer Conferences. Dr. Sotos is a partner of Maryland Oncology & Hematology in Rockville, Maryland. Dr. Sotos has expertise in medical oncology and hematology, as well as chemotherapy. Dr. Sotos earned his Master of Science in Physiology from Georgetown University, followed by his medical degree from the Medical College of Virginia. He completed a residency in internal medicine with University of Texas Southwestern Medical Center, followed by a fellowship in medical oncology with the National Cancer Institute of the National Institutes of Health. Dr. Sotos is a fellow of the American College of Physicians, as well as a member of the Montgomery County Medical Society, the Medical and Chirurgical Faculty of the State of Maryland, and the American Society of Clinical Oncology. He is also a member of the oncology specialty panel for Johns Hopkins Medicine's Formulary Management Committee and previously served as a member of Suburban Hospital's Medical Staff Executive Committee, Provider Quality Committee and Physician Advisory Board. Dr. Sotos has been named a Top Doctor by Washington Consumers' Checkbook and a Super Doctor by the Washington Post magazine. Castle Connolly has also named him a Top Doctor in the Washington, D.C., Baltimore and Washington-Baltimore areas. Dr. Sotos has contributed to numerous publications on medical oncology and hematology topics. Selected Publications Rotello, L, Albrant, D, Nossuli, K, Sotos, G, Samet, C, Rainey, T. ""Impact of a Hospital-Wide Pharmacy Implemented Weight-Based Dosing Protocol for Erythropoietin."" Chest, 124:4 (Suppl):182S (Abstract), 2003. Sotos, George A. ""Ars Brevis."" Journal of Clinical Oncology, 2013; 31:14; 1792-1794; http://jco.ascopubs.org/content/31/14/1792.full.pdf+html". Dr. Sotos is rated as an Experienced provider by MediFind in the treatment of X-Linked Agammaglobulinemia. His top areas of expertise are Lung Cancer, Pleuropulmonary Blastoma, Multiple Myeloma, and Endometrial Cancer.

Gulbu Uzel is an Allergy and Immunologist in Rockville, Maryland. Dr. Uzel is rated as an Advanced provider by MediFind in the treatment of X-Linked Agammaglobulinemia. Her top areas of expertise are Primary Immunodeficiency (PID), Activated PI3K Delta Syndrome (APDS), X-Linked Severe Combined Immunodeficiency, and Hyper IgE Syndrome.

Warren Strober is a primary care provider, practicing in Dermatologist in Bethesda, Maryland. Dr. Strober is rated as an Advanced provider by MediFind in the treatment of X-Linked Agammaglobulinemia. His top areas of expertise are Viral Gastroenteritis, X-Linked Agammaglobulinemia, Crohn's Disease, and Familial Cold Autoinflammatory Syndrome.

Jeremy Drelich is a Pediatrics provider in Cumberland, Maryland. Dr. Drelich is rated as an Experienced provider by MediFind in the treatment of X-Linked Agammaglobulinemia. His top areas of expertise are Common Variable Immune Deficiency, Primary Immunodeficiency (PID), Allergic Rhinitis, and Mast Cell Activation Syndrome (MCAS).

Christopher Koh is a primary care provider, practicing in Internal Medicine in Bethesda, Maryland. Dr. Koh is rated as an Experienced provider by MediFind in the treatment of X-Linked Agammaglobulinemia. His top areas of expertise are Hepatitis D, Hepatitis, Portal Hypertension, Endoscopy, and Colonoscopy.

Jenna Bergerson is a Pediatrics provider in Bethesda, Maryland. Dr. Bergerson is rated as an Experienced provider by MediFind in the treatment of X-Linked Agammaglobulinemia. Her top areas of expertise are Autosomal Dominant Hyper IgE Syndrome, Hyper IgE Syndrome, X-Linked Severe Combined Immunodeficiency, and Severe Combined Immunodeficiency (SCID).

Ting-jia Lorigiano is a primary care provider, practicing in Internal Medicine in Silver Spring, Maryland. Dr. Lorigiano is rated as an Experienced provider by MediFind in the treatment of X-Linked Agammaglobulinemia. Her top areas of expertise are WAGR Syndrome, X-Linked Agammaglobulinemia, Renovascular Hypertension, and Nephrosclerosis. Dr. Lorigiano is currently accepting new patients.

Joseph Haggerty is a Hematologist Oncology specialist and a Hematologist in Laurel, Maryland. Dr. Haggerty has been practicing medicine for over 44 years and is rated as an Experienced provider by MediFind in the treatment of X-Linked Agammaglobulinemia. His top areas of expertise are Lung Cancer, Pleuropulmonary Blastoma, Saddle Pulmonary Embolism, and Paget Disease of the Breast. Dr. Haggerty is currently accepting new patients.