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U.S. National Institutes of Health
Last Updated: 12/10/13

Staff, Pictures and Bios

James Zwiebel, MD, Branch Chief, IDB

James Zwiebel received the MD degree from the Mount Sinai School of Medicine, where he also completed his residency training in internal medicine. Following a clinical fellowship in hematology and oncology at the George Washington University Medical Center and research fellowships at both the National Cancer Institute and the National Heart Lung and Blood Institute, he continued his laboratory work on cancer gene therapy as a member of the faculty at Lombardi Cancer Center of the Georgetown University Medical Center, where he also practiced hematology and oncology. More…

S. Percy Ivy, MD, Associate Branch Chief, IDB

S. Percy Ivy, MD is the Associate Chief (2005) of the Investigational Drug Branch (IDB) which is part of the Cancer Therapy Evaluation Program (CTEP) in the Division of Cancer Treatment and Diagnosis of the National Cancer Institute. She received her medical and subspecialty training at Tulane University Medical School, Vanderbilt University Medical Center and the National Cancer Institute, respectively. More…

A. P. Chen, MD, Medical Officer

Dr. Chen is currently a Medical Officer in the Target Therapeutics 1 Section of the Investigational Drug Branch of the Cancer Therapy Evaluation Program of the National Cancer Institute. She is board certified in Internal Medicine and Medical Oncology. More…

Helen Chen, MD, Associate Chief and Medical Officer

Dr. Helen Chen joined the Cancer Therapy Evaluation Program (CTEP) of National Cancer Institute (NCI) in 2000. She currently serves as Associate Chief of the Investigational Drug Branch (IDB) Section III, which focuses on the clinical development of antibody-based therapeutics, active immunotherapies, MAPK and RTK inhibitors as well as antiangiogenic agents. More…

Austin Doyle, MD, Medical Officer

Dr. Doyle received his medical degree from the University of Maryland School of Medicine, where he completed internship and residency training in Internal Medicine. Dr. Doyle completed a medical oncology fellowship in the NCI-Navy Medical Oncology Branch of NCI. More…

Pamela Harris, MD, Medical Officer

Dr. Harris joined CTEP as a senior Investigator in the Investigational Drug Branch in March, 2009. She is board-certified in Internal Medicine and Medical Oncology. After completing fellowships at Memorial Sloan-Kettering Cancer Center, Georgetown University's Lombardi Cancer Center and George Washington University, More…

Jeff Moscow, MD, Medical Officer

Jeffrey A. Moscow, MD, joined the Investigational Drug Branch in January, 2014, after serving part-time in IDB since August, 2012. Prior to joining CTEP, he was Children’s Miracle Network Professor of Pediatrics, Chief of Pediatric Hematology-Oncology, Vice Chair of Pediatrics, and co-leader of the Experimental Therapeutics Program of the Markey Cancer Center, all at the University of Kentucky. More…

Richard Piekarz, MD, PhD, Medical Officer

Dr. Piekarz is a Medical Officer in the Investigational Therapeutics 3 Section of the Investigational Drug Branch of CTEP. Dr. Piekarz is a graduate of the Albert Einstein College of Medicine, where he received a PhD in Molecular Pharmacology in addition to an MD. He did his internship and residency in Internal Medicine at the University Hospitals of Cleveland. More…

Elad Sharon, MD, MPH, Medical Officer

Dr. Sharon joined CTEP in December 2011 as a Senior Investigator in the Investigational Drug Branch, where he works with academic investigators and industry collaborators to carry out the clinical development of promising new cancer therapies. His current portfolio includes immunotoxins, antibody-drug conjugates, immune-based monoclonal antibodies and other targeted agents. Dr. Sharon received his M.D. from Baylor College of Medicine in Houston, Texas in 2003. More…

Howard Streicher, MD, Medical Officer

Dr Streicher received AB in physics from Cornell University and his medical degree from New York University. He completed an internship and residency training in Internal Medicine at the New York University-Bellevue Medical Center and New York Veterans Hospital. More…

Naoko Takebe, MD, PhD, Medical Officer

Dr. Takebe joined CTEP in September 2007 as a Senior Investigator at the Investigational Drug Branch, where she works with academic investigators and industry collaborators to carry out the clinical development of promising new cancer therapies. More…

John J. Wright, MD, PhD, Medical Officer

Dr Wright received a PhD in molecular virology from the University of Illinois Medical Center and his medical degree from Northwestern University Medical School. He completed internship and residency training in Internal Medicine at the University of Virginia and then was a research fellow in the Metabolism Branch of the National Cancer Institute. More…