Peter Chei-Way Pan, MD

Marla Hamberger completed her undergraduate studies at Cornell University, and earned her Masters and Doctorate from the City University of New York. After completing her internship in Neuropsychology in the Department of Psychiatry, Columbia University, she obtained postdoctoral training at UCLA, specializing in the neuropsychology of epilepsy. She has been with the Comprehensive Epilepsy Center at Neurological Institute of New York, Columbia University Medical Center since 1992, where she is the Director of Neuropsychological Services within the Epilepsy Division, and holds the position of Professor of Neuropsychology in the Department of Neurology at Columbia University.

Dr. Iwamoto is a neuro-oncologist whose previous training includes a neurology residency at NewYork-Presbyterian/Weill Cornell Medical Center and a neuro-oncology fellowship at Memorial Sloan-Kettering Cancer Center. For over three years, Dr. Iwamoto was an attending physician and an investigator at the Neuro-oncology Branch, a trans-institute branch of the National Cancer Institute and National Institute of Neurological Disorders and Stroke, in Bethesda, MD. At the intramural NIH, Dr. Iwamoto was a principal investigator in early phase clinical trials for brain tumors and worked with laboratory and computational scientists on several translational projects in brain tumors. Dr. Iwamoto was recruited to Columbia University as the Deputy Director of the Neuro-oncology Division and is actively developing the clinical and translational research components of this program. He is an expert in the diagnosis, management, and treatment of brain and spinal cord tumors as well as neurological complications of cancer.

Mary Welch, MD is an Associate Professor of Neurology at CUMC, in the Division of Neuro-Oncology. Dr. Welch graduated from Chicagos' Northwestern Feinberg School of Medicine. She completed neurology residency here at Columbia, followed by sub-specialty training in neuro-oncology at Memorial Sloan-Kettering Cancer Center. In her second year of fellowship, she earned a Comparative Effectiveness Research Award to attend Columbia's Summer Research Institute at Mailman School of Public Health. Upon completing her training, Dr. Welch worked for several years as a practicing neuro-oncologist and Assistant Professor of Neurology at Montefiore Medical Center in the Bronx. There, she served as principal investigator for numerous phase I and II clinical trials for the treatment of primary and metastatic brain cancer. She also developed a strong research interest in improving patient access to both standard and investigational therapies. In addition to seeing both inpatient and outpatient neuro-oncology patients, Dr. Welch maintains an active research program within the Division of Neuro-Oncology.