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L. Brian Katz

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  • American Board of Surgery


  • MD, University of Witwatersrand

  • Residency, Medicine/Surgery
    Johannesburg General Hospital

  • Residency, Surgery
    Veterans Administration Med. Ctr.

  • Residency, Surgery
    Mount Sinai Hospital


    Professional Societies
    • American College of Surgeons
    • Society of Endoscopic Surgeons
    • New York Surgical Society
    • Society of American Gastrointestinal Endoscopic Surgeons
    Specialty Interests
    • Laparoscopic Cholecystectomy (including stones in the bile duct)
    • Laparoscopic Colectomy (Crohn's Disease, ulcerative colitis, familial polyposis, benign and malignant tumors)
    • Laparoscopic Small Bowel Surgery
    • Laparoscopic Esophagogastric (GERD, hiatal hernia, Achalasia, tumors both benign and malignant, peptic ulcer disease) Surgery
    • Laparoscopic solid organ (spleen, adrenal, pancreas)
    • Laparoscopic lysis of adhesions (abdominal pain)
    • Diagnostic Laparoscopy


  • 2000 -
    Medical Student Teaching Award in Surgery for Outstanding Teaching by an Attending
    Department of Surgery, Mount Sinai School of Medicine

  • 1992 -
    Surgical Attending of the Year
    Surgical Residents, Mount Sinai


Katz LB, Shaked A, Messer J. Colonic Variceal Hemorrhage: Diagnosis and Management. J Clin Gastroenterol 1985; 7: 67-69.

Katz LB, Aufses Jr AH, Rayfield E, Mitty H. Preoperative localization and intraoperative glucose monitoring in the management of patients with pancreatic insulinoma. Surgery 1986 Dec;: 509-512.

Markovitz LJ, Reyes I, Hunter JG, Katz LB. Multiple spontaneous perforations of the small intestine. Mount Sinai J Med 1987 June; 54(5): 440-442.

Lewis B, Katz LB. Intraoperative scintigraphy to localize gastrointestinal hemorrhage. Surg Gynecol Obstet 1990; 1(171): 388-392.

Szold A, Katz LB, Lewis BS. The surgical approach to occult gastrointestinal bleeding. AM J Surg 1992; 163: 90-92.

Katz L, Lyass S. Laparoscopic Management of Non-Parasitic Splenic Cyst. The American Journal of Gastroenterology 1996; 91(9).

Katz L, Spira RM, Lewis BS. Small Bowel Tumors: Improved Prognosis with Small Bowel Endoscopy. Gastroenterology 1996 April; 110(4).

Zamir G, Lyass S, Pertsemlidis D, Katz B. The fate of the dropped gallstones during laparoscopic cholecystectomy. Surgical Endoscopy 1999; 13: 68-70.

Katz LB. The Role of Surgery in Occult Gastrointestinal Bleeding. Seminars in Gastrointestinal Disease 1999 April; 10(2).

Genden EM, Kaufman MR, Katz B, Vine A, Urken ML. Tubed gastro-omental free flap for pharyngoesophageal reconstruction. Arch Otolaryngol Head Neck Surg 2001 July; 127(7): 847-853.

Industry Relationships

Physicians and scientists on the faculty of the Icahn School of Medicine at Mount Sinai often interact with pharmaceutical, device and biotechnology companies to improve patient care, develop new therapies and achieve scientific breakthroughs. In order to promote an ethical and transparent environment for conducting research, providing clinical care and teaching, Mount Sinai requires that salaried faculty inform the School of their relationships with such companies.

Dr. Katz did not report having any of the following types of financial relationships with industry during 2015 and/or 2016: consulting, scientific advisory board, industry-sponsored lectures, service on Board of Directors, participation on industry-sponsored committees, equity ownership valued at greater than 5% of a publicly traded company or any value in a privately held company. Please note that this information may differ from information posted on corporate sites due to timing or classification differences.

Mount Sinai's faculty policies relating to faculty collaboration with industry are posted on our website. Patients may wish to ask their physician about the activities they perform for companies.

Insurance Information

Physicians who provide services at hospitals and facilities in the Mount Sinai Health System might not participate in the same health plans as those Mount Sinai hospitals and facilities (even if the physicians are employed or contracted by those hospitals or facilities).

Information regarding insurance participation and billing by this physician may be found on this page, and can also be obtained by contacting this provider directly. Because physicians insurance participation can change, the insurance information on this page may not always be up-to-date. Please contact this physician directly to obtain the most up-to-date insurance information.

Insurance and health plan networks that the various Mount Sinai Health System hospitals and facilities participate in can be found on the Mount Sinai Health System website.

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