Dr. Ren Y. Liu is an anesthesiologist in Montclair, New Jersey and is affiliated with multiple hospitals in the area, including Cooperman Barnabas Medical Center and JFK University Medical Center at Hackensack Meridian Health. He received his medical degree from State University of New York Downstate Medical Center College of Medicine and has been in practice for more than 20 years. Dr. Ren Y. Liu accepts Medicare, Cigna - see other insurance plans accepted.