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1010 Fifth Avenue,
New York, NY 10028

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Phone: (212) 879-6677
Fax: (212) 650-9981


Monday: By Appointment

Foreign Languages: English, Hebrew and Afrikaans

New Patients Accepted: yes
From Website: yes
From Patients: yes
From MDs: yes

Medicare: Opted out of Medicare

L. Brian Katz, MD

Focus of Practice: Advanced Laparoscopic Surgery, Esophageal Reflux, Hernias, Inflammatory Bowel Disease

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.

  • Undergraduate: King David School, Linksfield, MBBCh
  • Medical School: University of Witwatersrand, MD, 1975
  • Internship: Department of Surgery, Department of Medicine, University of Witwatersrand, 1976
  • Residencies:

    Mt. Sinai Medical Center, General Surgery, 1977-1982

Clinical/Academic Titles:

Academic Appointments:
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

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

Board Certifications:

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