Porter Ranch Team

Dr. Juan M. Alcantar grew up in Oxnard. He attended the David Geffen School of Medicine at UCLA and completed an internal medicine residency at Olive View-UCLA Medical Center. His medical oncology and hematology fellowship was completed at Harbor-UCLA and City of Hope Medical Centers. Prior to completing his fellowship, Dr. Alcantar practiced ambulatory and hospital medicine in Sherman Oaks, California. He was in private practice in hematology/oncology from 2011-2015. Dr. Alcantar is board- certified in internal medicine as well as hematology and oncology. He regularly participates in multi-disciplinary tumor boards to provide optimal and up-to-date treatments for his patients. He is dedicated to providing comprehensive medical care with quality and compassion to his patients. Dr. Alcantar enjoys his spare time with his wife and two sons. He also enjoys soccer and reading on the history of medicine.

Dr. Melissa J. Cohen is assistant clinical professor of medicine at the David Geffen School of Medicine at UCLA and a board certified medical oncologist practicing at UCLA Hematology/Oncology in Westlake Village and Porter Ranch. She began her medical training at George Washington University in Washington D.C., and then moved to Denver where she completed her internal medicine residency training at the University of Colorado. In 2008, she relocated to Southern California to complete her fellowship training in both geriatrics and medical oncology at UCLA.

John Glaspy, MD, MPH, is professor of medicine at the Jonsson Comprehensive Cancer Center (JCCC) of the University of California, Los Angeles (UCLA) School of Medicine. Dr. Glaspy holds the Estelle, Abe, and Marjorie Sanders Endowed Chair in Cancer Research. He is director of the JCCC Clinical Research Unit and director of the JCCC Women's Cancer Research Program.

Dr. Gregory Senofsky is a board-certified, fellowship-trained surgical oncologist with special expertise in breast and melanoma surgery. He sees patients for consultations in Santa Clarita, Porter Ranch and Encino, and performs surgery at nearby community hospitals and at Ronald Reagan UCLA Medical Center.

Erica L Silver, MS, LCGC is a licensed and certified genetic counselor specializing in cancer genetics and hereditary cancer syndromes. She received her Bachelor's degree from California State University, Northridge in Cellular and Molecular Biology. She then completed her Masters degree in Genetic Counseling at the University of Pittsburgh. She is board certified by the American Board of Genetic Counseling and holds a genetic counseling license through the California Department of Public Health. Her interests include the decision-making process to proceed with genetic testing and how individuals use the information to help make management decisions.