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Adrian E. Park, M.D., F.R.C.S. (C) F.A.C.S.


Adrian E. Park, M.D., F.R.C.S. (C) F.A.C.S., is chief of general surgery at the University of Maryland Medical Center and a member of the faculty at the University of Maryland School of Medicine.

Dr. Park, a renowned laparoscopic surgeon, joined the University of Maryland after six years with the University of Kentucky where he was director of the Center for Minimally Invasive Surgery, head of surgical endoscopy and chief of the section of gastrointestinal surgery. In addition, he was a professor of surgery and the Commonwealth Professor of Minimally Invasive Surgery, an endowed professorship. Prior to that, Dr. Park was on the faculty in the Department of Surgery at McMaster University in Ontario, Canada.

After completing his bachelor of sciences with honors at the University of Guelph in Ontario, Dr. Park received his medical degree from McMaster University. Dr. Park continued his training as an intern, resident and chief resident in general surgery in Ontario. He also completed a fellowship in laparoscopic/endoscopic surgery at Hotel Dieu de Montreal.

Dr. Park's clinical interests lie in the field of minimally invasive gastrointestinal surgery including the treatment of gastroesophageal reflux, achalasia, hiatal hernia, intestinal disorders and ventral/incisional hernias. He also has extensive experience and interest in laparoscopic splenic and adrenal surgery. He is an active researcher in minimally invasive surgery and has been directly involved in initiating, developing, and applying new techniques and technologies in endoscopic surgery. Dr. Park is the author of over one hundred and fifty scientific articles and book chapters, and is internationally known as a leading authority in the field of minimally invasive surgery and surgical education.

John Scott Roth, M.D., F.A.C.S.


John Scott Roth, M.D., F.A.C.S., is head of surgical endoscopy at the University of Maryland Medical Center and on the faculty at the University of Maryland School of Medicine.

Dr. Roth received his undergraduate degree from the College of William and Mary and went on to receive his medical degree from the Medical College of Virginia at Virginia Commonwealth University. He subsequently completed his general surgical training at the University of Kentucky Chandler Medical Center followed by a fellowship in minimally invasive surgery at the University of Kentucky.

Prior to his arrival at the University of Maryland, Dr. Roth was an assistant professor of surgery and associate director of the Minimally Invasive Surgery Center at the Brody School of Medicine at East Carolina University in Greenville, North Carolina. While at the Brody School of Medicine, Dr. Roth was honored with the Bernard Vick, M.D. teaching award for outstanding resident education.

Dr. Roth has authored numerous articles in minimally invasive surgery and has extensive experience in minimally invasive surgical procedures of the abdomen and gastrointestinal tract.


Paul F. Castellanos, M.D., is an otolaryngologist at the University of Maryland Medical Center and assistant professor of surgery at the University of Maryland School of Medicine. He is also director of the University of Maryland Voice and Swallowing Disorders Clinic, as well as the University of Maryland Airway Clinic.

After receiving his undergraduate degree from Vassar College, Dr. Castellanos completed his medical degree at Louisiana State Medical School. He continued his training at Jewish Hospital of St. Louis with an internship in general surgery. From there, he went onto Washington University School of Medicine for a residency in otolaryngology, head and neck surgery. He trained with Dr. George Gates during his laryngology research fellowship and also with Professor Wolfgang Steiner in Goettingham, Germany to learn the techniques of Trans-Oral Laser Microsurgery.

Trained in advanced laryngoscopic airway techniques for cancer and airway stenosis, Dr. Castellanos is very interested in minimally invasive surgery using robotic and computer integration in the operating room. He is the author of a number of papers and book chapters on the surgical anatomy of the larynx, voice production, airway trauma and the control of intractable aspiration.

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