Jay S Leb, MD

MSK medical oncologist Alice Zervoudakis specializes in caring for people with gastrointestinal cancers, including colorectal cancer, pancreatic cancer, hepatobiliary cancer, and gastroesophageal cancer. Her practice is located at Memorial Sloan Kettering Westchester.

Dr. Marc Brown is the medical director of ColumbiaDoctors/NewYork-Presbyterian Imaging in midtown Manhattan and associate professor of radiology at Columbia University Irving Medical Center (CUIMC). He also serves as vice chair of outpatient imaging in the Department of Radiology, as well as associate attending radiologist at NewYork-Presbyterian Hospital. Dr. Brown earned his medical degree at the College of Physicians and Surgeons of Columbia University and completed his internship, residency, and fellowship specializing in ultrasound/breast imaging at Columbia-Presbyterian Medical Center. He is certified by the American Board of Radiology and a member of the American Roentgen Ray Society, New York State Radiological Society, Radiological Society of North America, and the Society of Practitioners.

Justin K. Greisberg, MD, is an orthopedic surgeon specializing in foot and ankle reconstruction and complex musculoskeletal trauma. Dr. Greisberg is Chief of Foot & Ankle Orthopedics, Chief of Orthopedic Trauma, at NewYork-Presbyterian-Lawrence Division, and Professor of Orthopedic Surgery, Columbia University. Dr. Greisberg is an expert on complex reconstructive surgeries, limb realignment, diabetic reconstruction, Achilles tendon injuries, stress fractures, and total ankle replacement. His practice leverages advanced minimally invasive arthroscopic techniques, combined with the latest medications, braces, and orthotics to ensure accelerated recovery times. Following medical school and residency training, Dr. Greisberg completed advanced fellowship training in both foot and ankle surgery and orthopedic trauma. As chief of the foot and ankle service at Columbia University Irving Medical Center, Dr. Greisberg's practice – based in Manhattan and Westchester County – is supported by the full resources of the NewYork-Presbyterian Hospital system, and he frequently receives emergency trauma cases from across the region. In addition to his clinical practice, Dr. Greisberg is also a highly respected scholar who is conducting several research trials on foot and ankle procedures and trauma surgery. He co-authored a textbook, Core Knowledge in Orthopedics: Foot and Ankle, and numerous peer-reviewed articles that have appeared in professional medical journals. Dr. Greisberg is actively involved in the education of medical students and orthopedic residents and is frequently invited to lecture on complex problems of the foot and ankle at major medical conferences.