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Meet Our Bariatric Weight Loss Team

Tom Brown, MD

Medical Director, Bariatric Surgery Program
Bariatric Surgeon

Thomas Brown, M.D.Dr. Tom Brown is the Director of the Bariatric Surgery Program at Presbyterian/St. Luke's Medical Center. He earned his medical degree from Loyola Stritch School of Medicine in Illinois and completed a surgical residency at Western Reserve Care System in Ohio. Today, he is a board-certified, general and bariatric surgeon who has more than 27 years of clinical experience in performing general surgery, 14 of which have been recently dedicated to the practice of bariatric surgery. 

Dr. Brown is one of the leading laparoscopic surgeons in the Denver area, demonstrating skill and experience in executing 3,500 bariatric surgical procedures, including the gastric bypass, the Lap-Band, gastric sleeve, and bariatric revisional surgery. When doing bariatric surgery, Dr. Brown performs 99% of his procedures laparoscopically. He established the American Society for Metabolic and Bariatric Surgery—recognized Center of Excellence Bariatric Surgery Program at P/SL.

Watch Dr. Brown on our YouTube Channel.

Katayun Irani, M.D.

Bariatric Surgeon

Katayun Irani, M.D.Dr. Katayun Irani is a board-certified general surgeon who did a fellowship in Bariatric surgery at Legacy Good Samaritan Hospital, a renowned program in bariatric and minimally invasive surgery in Portland, OR. She completed her general surgery training at New York University in New York City, during which she did additional research training at Harvard University in Boston, MA. Dr. Irani started a bariatric program at Willamette Valley Medical Center after which she moved to Asheville, NC where she practiced for several years, helping build the program. During her time there, she was appointed Assistant Professor to University of North Carolina Medical school where she educated medical students in the field of general and bariatric surgery.

She specializes in Roux-en-Y gastric Bypass, Laparoscopic Sleeve Gastrectomy, Laparoscopic Adjustable Gastric Banding, revisional procedures, and numerous endoscopic procedures. She also offers numerous general surgery procedures including hernia repair (inguinal, umbilical, and incisional), Laparoscopic gallbladder removal, Laparoscopic antireflux procedures.She has now moved to the area to change her practice and focus on mostly Bariatric Surgery, her passion. The transformation in her patients lives, which she feels privileged to be part of, is what drove her to this change. She focuses on a patient centered approach and prides herself in making patients and families feel comfortable. She helps educate and support patients and their families throughout their journey, including the preparation period, the operative period, and the follow up, for the rest of their lives. 

Watch Dr. Irani on our YouTube Channel.

Shannon Smiley, RD

Bariatric Dietitian

Shannon Smiley, RDShannon has been a Registered Dietitian since 1998, with the past eight years specialized in the field of weight management. She has held various positions as a Bariatric Dietitian and Bariatric Coordinator. Prior to entering weight management, Shannon worked as a nutrition educator and counselor for U.S. Military Personnel in Germany and as a Clinical Nutrition Manager for one of San Diego’s largest hospitals. Shannon graduated with a Bachelors of Science Degree in Nutrition from Cal Poly University in San Luis Obispo, CA, and completed her Dietetic Internship at San Diego State University. She is also certified through the American Dietetic Association as a Weight Management Counselor. Shannon is passionate about educating patients from all walks of life and assisting them through their weight loss journey. Shannon focuses on teaching patients about basic nutrition, fundamentals of cooking, grocery shopping, vitamin/mineral supplementation and exercise guidelines. In her personal life Shannon loves spending time with her husband and daughters, practicing hot yoga and running.