David Kauvar, MD

Joshua L. Hartman, MD, is a gastroenterologist at NewYork-Presbyterian Medical Group Westchester and an assistant professor of medicine at Columbia University Medical Center. He performs surgeries at NewYork-Presbyterian Lawrence Hospital. Dr. Hartman see patients for general gastroenterology conditions as well as liver disease. He earned his medical degree from New York Medical College. He served his internship and residency at Icahn School of Medicine at Mount Sinai Hospital and his gastroenterology fellowship at Northwell Health. He is a frequent lecturer and has published research in various medical journals. Dr. Hartman is a member of the American College of Gastroenterology and the New York Society for Gastrointestinal Endoscopy.

Jonathan Kirshner, MD, is an is an Assistant Professor of Medicine at CUMC and an Infectious Diseases physician at NewYork-Presbyterian Medical Group Westchester. After earning his medical degree from Eastern Virginia Medical School, Dr. Kirshner completed his residency in Internal Medicine at Mount Sinai Beth Israel. He served his fellowship in Infectious Diseases at Montefiore Medical Center in New York. He is a member of several professional organizations, including the Infectious Diseases Society of America, the American College of Physicians, and the American Medical Association, and is board certified in Internal Medicine.

Dr. Anthony Provenzano is a practicing Medical Oncologist at NewYork-Presbyterian Medical Group Westchester located in Bronxville, NY. He received his medical degree from Cornell University Medical College and has been in practice for 36 years. Some of Dr. Provenzanos areas of interest are, but are not limited to, lung cancer, breast cancer, genitourinary cancer, GI malignancy, lymphoma, esophageal cancer, head and neck malignancy, and melanoma (see below). Dr. Provenzano is published in various peer-reviewed journals in oncology such as the Journal of Oncology Practice and the Journal of Clinical Oncology (JOCO). In the latter, he is one of the authors and committee members for the ASCO guidelines for Laryngeal Preservation of Head and Neck Cancer and Malignant Melanoma which were recently published in JOCO. He has lectured on and has a special interest in the toxicity of immunotherapy treatment of malignancy. He also has published articles in ASCO Connection. He is a member of ASCO's (American Society of Clinical Oncology) clinical guideline committee. He is on the Advisory Guideline Group to the Clinical Practice Guidelines Committee for ASCO. Dr. Provenzano is board certified in Medical Oncology and is up to date in MOC (maintenance of certification). In addition, he has a BS in Electrical Engineering from Cornell University and has interests in the applications of mathematics and physics to oncology diagnostics and treatment.In addition to what is previously listed he has a special interest in cancer genetics, immunotherapy, and basic science applications for cancer diagnostics and treatment. Dr. Provenzano is also the chairman of the Cancer Committee at New York Presbyterian Lawrence Hospital and has assisted in attaining and maintaining the accreditation of our Cancer Program. Other awards and recognitions are the Outstanding Service Award American Cancer Society, Westchester County, NY 1983-1990.Castle Connelly Best Doctors New York Metro Area.Former chief of Medical Oncology at Lawrence Hospital.Editorial Board Cancer.net, advisory panel.Dr. Provenzano has written an article about COVID-19, Cancer, and Uncertainty. You can read ithere.