Dr. Steven C. Tizio

"David E. Rivadeneira, MD, MBA, FACS, FASCRS, is director of Northwell Health Cancer Institute at Huntington and physician-in-chief of clinical strategic initiatives for Northwell facilities across eastern Long Island. He's a board-certified, multilingual general surgeon and colorectal surgeon who provides leading-edge care for colon and rectal cancer, inflammatory bowel disease such as ulcerative colitis and Crohn's disease, as well as diverticulitis.""I've always wanted to help people,"" says Dr. Rivadeneira, who completed his residency in general surgery at Weill Medical College of Cornell University, training at both New York-Presbyterian/Weill Cornell Medical Center and Memorial Sloan Kettering Cancer Center.Dr. Rivadeneira, who joined Northwell in 2013, works alongside a multidisciplinary team including oncologists, geneticists and nutritionists to give patients complete and convenient care. Consultations can usually be made within 24 to 48 hours at various Long Island locations-and everyone receives the care they deserve. ""I treat people like I'd want a family member to be treated,"" says Dr. Rivadeneira. ""I speak to patients in a way that helps them really understand their care-it's clear, concise and always compassionate.""A professor of surgery at the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Dr. Rivadeneira also instructs surgeons throughout the country and abroad. He is a fellow of the American College of Surgeons, the American Society of Colon and Rectal Surgeons and the Society of Surgical Oncology, among others. He also works closely with Northwell research partner Cold Spring Harbor Laboratory on tissue analysis for critical research studies for the very best patient care-now and in the future.""Seeing patients have better quality of life with no more pain, and seeing them enjoy major life milestones because of treatment-it just doesn't get any better than that,"" he says.". Dr. Rivadeneira is rated as a Distinguished provider by MediFind in the treatment of Meckel's Diverticulum. His top areas of expertise are Hemorrhoids, Familial Colorectal Cancer, Diverticular Disease, Bladder Reconstruction, and Hernia Surgery.

Cesar Sanz is a Colorectal Surgeon in Garden City, New York. Dr. Sanz is rated as a Distinguished provider by MediFind in the treatment of Meckel's Diverticulum. His top areas of expertise are Proctitis, Hemorrhoids, Gastric Dysmotility, Hernia Surgery, and Colonoscopy.

"Marc Lehrer Greenwald, MD, is the chief of colorectal clinical services and surgeon-in-chief at North Shore University Hospital. He is a double board-certified colorectal surgeon who specializes in minimally invasive and sphincter sparing techniques to treat a wide range of diseases and disorders of the small intestine, colon, rectum and anus. This includes diverticulitis, Crohn's disease, ulcerative colitis and colorectal cancer.""I'm really fortunate to work with an amazing team at North Shore,"" Dr. Greenwald says. ""They share my passion for helping others, and together, we are making a difference in the lives of so many people.""After receiving his medical degree from the Albert Einstein College of Medicine, Dr. Greenwald completed his residency at Montefiore Medical Center and fellowship in Hartford, Connecticut. He joined Northwell in 1991, and has held many leadership positions at North Shore University Hospital, including president of the medical staff and chair of the medical board.Dr. Greenwald established the Enhanced Recovery Program at North Shore University Hospital, implementing protocols that provide easy, safe and rapid recovery after surgery. ""The program helps patients recover faster, get home to their families sooner and have better results,"" he says. His team also leads the way in delivering the best outcomes and highest quality care, consistently scoring above the national average in quality surveys.As program director of the rectal cancer multidisciplinary team, Dr. Greenwald works closely with other Northwell experts-including medical oncologists, radiation oncologists and colorectal surgeons-to evaluate every patient with rectal cancer. ""It's my job to make sure best practices are used and patients receive individualized care with guided support from start to finish.""Dr. Greenwald is an assistant professor of surgery at the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell and has won multiple teaching awards, including the Department of Surgery Award for Excellence in Operative Teaching. He is also a Castle Connelly Top Doctor.Decades of being a surgeon have given Dr. Greenwald a greater awareness about his patients. ""It's not just about treating their illness,"" he says. ""It's about understanding their illness as it relates to everything else in their lives. You need that global perspective to truly understand what the patient is going through.""". Dr. Greenwald is rated as a Distinguished provider by MediFind in the treatment of Meckel's Diverticulum. His top areas of expertise are Ogilvie Syndrome, Familial Colorectal Cancer, Diverticular Disease, Hernia Surgery, and Bladder Reconstruction.