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Scientific Advisory Board

J. Stephen McColgan, M.D., MBA
J. Stephen McColgan, M.D., MBA
Scientific Advisor
bullet Leader in the Field of Bariatric Surgery
bullet Over 20 years specializing in General, Vascular, and Advanced Laparoscopic Surgery


J. Stephen McColgan, M.D., MBA was born in Boston, Massachusetts. He graduated from Boston College High School with the highest of honors. He then received his Bachelor of Arts degree and graduated from Boston University, Summa Cum Laude with distinction in Biology. Dr McColgan continued his education by attending medical school at Boston University School of Medicine in Boston, Massachusetts. He completed his general surgery training at the University of California, Irvine, where he served as chief resident in general surgery. In addition, he received his Masters in Business Administration degree from the University of California, Irvine.

Dr. McColgan has been in private practice in the Long Beach, California area for the past 20 years, specializing in General, Vascular and Advanced Laparoscopic surgery. Dr. McColgan has extensive training in a wide variety of advanced laparoscopic surgical procedures. He was one of the first surgeons in the Los Angeles area to perform Laparoscopic Cholecystectomy in 1990. He has gone on to apply his advanced laparoscopic surgical skills to perform the most state-of-the-art method of bariatric surgery, Laparoscopic Gastric Bypass and is considered a leader in this field.

Dr. McColgan has held the position of Chairman of the Department of Surgery for Bellflower Medical Center for the past 10 years. He has also served on the Board of Directors and has held many other positions in medical staff leadership over his 20 years in practice.

Dr. McColgan has not only focused on performing advanced laparoscopic surgery but he has worked with major corporations such as US Surgical Corporation and Ethicon Endo Surgical Corporation as a consultant to train and qualify surgeons for competency in Laparoscopic Gastric Bypass. In addition, he was the Chief Medical Officer of Onyx Corporation. Dr. McColgan also became involved with the International Divisions of US Surgical and Stryker Corporations. He was instrumental in the start up and development of a comprehensive program for an Advanced Laparoscopic Bariatric Surgery Center of Excellence at Piyavate Hospital in Bangkok, Thailand. This center functioned as a teaching center and corporate showcase for the Asia Pacific Region.

Dr. McColgan enthusiastically looks towards the future with his extensive training in advanced laparoscopic surgical procedures and remains committed to performing and perfecting the most innovative surgical techniques.