HomePhysiciansL. Brian Katz, MD
Phone: (212) 879-6677
Fax: (212) 650-9981

Mon - 9:00am - 5:00pm
Tue - 9:00am - 5:00pm
Wed - 9:00am - 5:00pm
Thu - 9:00am - 5:00pm
Fri - 9:00am - 5:00pm

1010 Fifth Avenue
New York, NY 10028


Dr. L. Brian Katz is an American Board Certified general surgeon who received his medical training in South Africa at the University of the Witwatersrand in Johannesberg. He completed his surgical residency at Mount Sinai Medical Center in New York City and is an Associate Clinical Professor of Surgery on the voluntary staff. Dr. Katz has participated in the development of laparoscopic surgery from its infancy to its present status of being state of the art general surgery. He has been actively involved in the education and training of surgical residents in this field and for his exemplary teaching, he has been recognized with multiple outstanding teacher awards. Dr. Katz specializes in minimally invasive surgery of the gastrointestinal tract that includes the small and large intestine, as well as in hernia surgery. He has a clinical expertise in cryptogenic (hidden) gastrointestinal bleeding. Additionally, Dr. Katz is recognized as a world-renowned expect in Peutz-Jegher Syndrome. Click here for an inclusive list of published articles by Dr. Katz. Dr. Katz is devoted to individualized patient care and well recognized in both the United States and Israel for his compassion. Dr. Katz enjoys spending time with his family and is actively involved in his synagogue, supporting multiple causes. He is an avid athlete who has completed the New York City Marathon multiple times.


English, English, Hebrew and Afrikaans

Not known at this time

Referral Status

From Patients

From Physician

From Website

Medicare Status

Opted Out


King David School, Linksfield, MBBCh

Medical School

University of Witwatersrand, MD 1975


University of Witwatersrand, Department of Surgery, Department of Medicine 1976


Mt. Sinai Medical Center, General Surgery 1977-1982

Professional Achievements
Board Certifications

FLEX - 1977
FACS - 1984, RE-certified 1991, 2001

Hospital Appointments:
Assistant Attending Surgeon, Mount Sinai Medical Center, NY, 1982-present
Assistant Attending Surgeon, Lenox Hill Hospital, NY, 1991-present

Academic Titles

Associate in Surgery, Mount Sinai Medical Center, NY, 1982-1985
Assistant Clinical Professor, Mount Sinai Medical Center, NY, 1985 - 2003
Associate Clinical Professor of Surgery, NY, 2003 - present

Professional Organizations

American College of Surgeons - 1983 - present
New York Academy of Gastroenterology - 1985 - present
Society of Surgery of Alimentary Tract - 1990 - present
Society of Endoscopic Surgeons - 1991 - present
New York Surgical Society - 1992 - present
Society American Gastrointestinal Endoscopic Surgeons - 1997 - present