Maria Grigovich, M.D.

Dr. Kimberley Chien is an associate professor of clinical pediatrics at Weill Cornell Medicine and associate attending pediatrician at NewYork-Presbyterian Komansky Children’s Hospital at Weill Cornell Medical Center, where she also serves as the Medical Director of the Pediatric Specialty Practice. Dr. Chien is board-certified in pediatrics and pediatric gastroenterology. After receiving a B.S. in Neuroscience at Tufts University, Dr. Chien earned her medical degree at SUNY-Downstate Medical College of Brooklyn. She completed her pediatric internship and residency training at NYU School of Medicine and attended NYP Morgan Stanley Children’s Hospital/Columbia University Medical Center to complete fellowship training in Pediatric Gastroenterology, Hepatology, and Nutrition. While Dr. Chien cares for a variety of patients with various gastrointestinal disorders, her clinical expertise focuses on transitional care of inflammatory bowel disease patients and other chronic gastrointestinal disorders. Dr. Chien has also developed and oversees the Weill Cornell Medicine Pediatric Inflammatory Bowel Disease Transition Program and research registry, an initiative to understand and optimize the health and well-being of all adolescent Inflammatory Bowel Disease patients at Weill Cornell Medicine. She works closely with a multidisciplinary team that includes a nutritionist, patient navigator, social worker, psychologist as well and other pediatric subspecialists to ensure excellent patient care and comprehensive treatment of difficult and complex gastrointestinal disorders. In addition to her clinical work, Dr. Chien has a strong interest and expertise in clinical research to improve pediatric gastrointestinal patients’ outcomes and quality of life. She also engages in regional and national clinical and research initiatives to improve physician wellness. Throughout her career, Dr. Chien has remained engaged in medical education at various levels, teaching and mentoring medical students, residents, and fellows.

Dr. Marc H. Schiffman is Assistant Professor of Radiology at Weill Cornell Medical College and an Assistant Attending Radiologist at New York-Presbyterian Hospital-Weill Cornell Campus. He is a member of the Division of Interventional Radiology and performs a wide array of interventional radiology procedures.Dr. Schiffman earned his B.S. degree from Cornell University, Ithaca, NY in 1997. He was awarded his M.D. degree, in 2003 from the State University of New York (SUNY) Upstate Medical Center in Syracuse, NY. He received a commendation for top clinical performance and was elected into the Alpha Omega Alpha Medical Honor Society.After a year (2003-2004) as an intern New York Hospital-Queens in Flushing, NY, Dr. Schiffman completed his radiology residency training (2004-2008) in Diagnostic Radiology at the Mount Sinai Medical Center, New York, NY. This was followed by a Fellowship in Interventional Radiology, also at Mount Sinai, from 2008 to 2009.Dr. Schiffman achieved Board Certification in Diagnostic Radiology from the American Board of Radiology in 2008. Dr. Schiffman was then recruited to the full-time faculty at Weill Cornell Medical College-NYPH in July 2009. He has performed the first adrenal radiofrequency ablation, liver, kidney and bone microwave ablations, balloon retrograde transvenous variceal obliteration, and laparoscopic renal cancer cryosurgery at New York Hospital. He has successfully completed the world's first pediatric percutaneous construction of an absent Inferior Vena Cava. Dr. Schiffman has been invited to speak about renal cancer cryosurgery, uterine fibroid and varicocele embolization at National and International medical conferences. He is currently the Executive Co-Director of the Weill Cornell Medicine Fibroid and Adenomyosis Program and is the only physician in the Tri-state region performing noninvasive MR-guided focused ultrasound surgery for uterine fibroids and adenomyosis. He recently successfully performed the first prostate embolization at NYP, and will be developing a research and clinical program in this area.__________________________________________________________To schedule an Interventional Radiology appointment, please contact the registrar at (646) 962-6762.To speak to Interventional Radiology doctors, please call (212) 746-2600 or (212) 746-1866.

Rebecca Wax, M.D. is a radiologist specializing in Abdominal Imaging. She is an Assistant Professor of Clinical Radiology at Weill Cornell Medicine and an Assistant Attending Radiologist at the New York-Presbyterian Hospital/Weill Cornell Medicine Campus.Dr. Wax graduated from Emory University where she earned her B.S. in Anthropology and Human Biology in 2013. She then received her M.D. from SUNY Downstate Medical Center in 2018. Following an internal medicine internship at Lenox Hill Hospital, Dr. Wax completed her residency in Diagnostic Radiology at Mount Sinai Hospital, New York in 2023. She then completed her fellowship in Abdominal Imaging at New York-Presbyterian Hospital/Weill Cornell Medicine in 2024.Dr. Wax joined the faculty at Weill Cornell Medicine in September 2024 as an Assistant Professor of Clinical Radiology.