Marc D. Dyrszka, MD

Dr. Lyndon Luk is a board-certified radiologist specializing in abdominal imaging. He is an associate professor of radiology at Columbia University Irving Medical Center and an attending radiologist at NewYork-Presbyterian Hospital. He serves as chief of the Division of Abdominal Imaging for the Department of Radiology and program director of the Abdominal Imaging Fellowship. Dr. Luk's research interests include pancreas imaging, early detection surveillance for pancreatic cancer, advanced MR imaging techniques of the bladder and prostate, radiomics, and machine learning/artificial intelligence. As a member of the Pancreas Center at Columbia, Dr. Luk leads imaging review with a multidisciplinary team of surgeons, oncologists, gastroenterologists, and radiation oncologists, reviewing over 1200 patients annually. Dr. Luk is a member of the Society of Abdominal Radiology (SAR) Pancreas Adenocarcinoma Disease-Focused Panel, collaborating with colleagues across the country to improve patient care and publish research. Dr. Luk is passionate about daily education of radiology residents and fellows on clinical service, with an emphasis on radiology reporting that provides effective care for patients and value for referring clinicians. He has been the recipient of multiple teaching awards, including the the Department of Radiology's Lecturer of the Year, Teacher of the Year, and Mentor of the Year. He has mentored many residents and fellows who have gone onto successful careers in both academic and private practice. After receiving his BS from New York University, Dr. Luk earned his medical degree from Rutgers-New Jersey Medical School. He then went on to complete a Diagnostic Radiology Residency at CUIMC/NewYork-Presbyterian, where he served as chief resident, followed by an Abdominal Imaging Fellowship at New York University Langone Medical Center.

Amanda Guardado, MD is a general obstetrician/gynecologist providing comprehensive women's health care. She went to Harvard University for her undergraduate degree and then Albert Einstein College of Medicine in Bronx, NY to obtain her medical degree. She completed her residency training in Obstetrics and Gynecology at the University of Maryland in Baltimore, Maryland. She has a special interest in adolescent health and preventative care.

Dr. Dean Chou is the Bennett M. Stein Professor of Neurosurgery. He is the Chief of the Spine Division and Vice Chair of Department of Neurosurgery at the Columbia University Vagelos College of Physicians and Surgeons. Dr. Chou has many years of experience andexpertise in scoliosis, spinal deformity, spinal tumors, and degenerative conditions of the spine. He haspioneered many minimally invasive surgical techniques to treat these complexconditions, and is also an expert in traditional open surgery. Whenpossible, he uses the least-invasive treatment techniques,providing an individualized, thoughtful approach to every patient. Dr. Chou attended medicalschool at the University of California, San Francisco, completed his residencyin Neurosurgery at The Johns Hopkins Hospital, and undertook a fellowship incomplex spinal surgery at The Barrow Neurological Institute under one of thelegendary pioneers of spine surgery, Dr. Volker Sonntag. He is board certified by the American Boardof Neurological Surgery. Prior toColumbia, he was on faculty at the University of California of San Francisco,rising to the rank of full Professor of Neurosurgery and Orthopedics, and eventually the Associate Director of the UCSF Neurospine Center. He is a Castle Connolly Top Doctor and hasbeen elected by his peers for 10 consecutive years to the “BestDoctors in America” list, according to Best Doctors, Inc. Dr. Chou has authored more than 300 peer-reviewed publications in a wide variety of neurosurgery and spinejournals. He sits on the editorial boards of the following journals; Journal of Neurosurgery:Spine, Neurosurgery, and PLOS ONE. He is on theadvisory board of the journal, Spine. He serves as Treasurer and on the Board ofDirectors for the Lumbar Spine Research Society (LSRS) and serves on theMembership Committee for the American Association of Neurological Surgeons(AANS). He also sits on the Executive andScientific Program Committees of the AANS/Congress of Neurosurgeons Section onDisorders of the Spine and Peripheral Nerves, and he has served as an abstractreviewer for many organized meetings. He is a two-time recipient of the HaroldRosegay Resident Teaching Award and has been awarded the Alumni AchievementAward from The Johns Hopkins Department of Neurosurgery. He has served as abstract reviewer andfaculty member for such organizations as the Scoliosis Research Society (SRS),the North American Spine Society (NASS), the Congress of Neurological Surgeons(CNS), the AANS, the LSRS, the Global Spine Congress, and the InternationalMeeting for Advanced Spinal Techniques (IMAST).