865-558-0601 mmahan@gia180.com

Associates, PC

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The Team

Melissa Mahan, RN, BSN

Originally from Brentwood, Tennessee, Melissa earned her bachelor’s degree in nursing from the University of Tennessee. Her 16-year nursing career has included time in medical surgery, women’s health, labor and delivery and gastroenterology. She joined Gastrointestinal Associates as a registered nurse in 2012 and was named clinical director of GIA 180 in 2015.

Along with GIA 180 dietitian Katelyn Bianconi, Melissa leads a support group and exercise class for GIA 180 participants twice monthly. A West Knoxville resident, Melissa enjoys exercising, playing softball, baking, reading and playing with her three young children: daughter Addy and sons Riley and Fitz.

Katelyn Bianconi MS, RDN, LDN

A native of Norman, Oklahoma, Katelyn earned her bachelor’s degree from Ouachita Baptist University, just outside of Little Rock, Arkansas, and her master’s degree from Louisiana Tech University. She worked as an ambulatory care dietitian at the Overton Brooks VA Medical Center in Shreveport, Louisiana, before moving to Knoxville in 2015 and becoming Gastrointestinal Associates’ first full-time registered dietician.

Along with GIA 180 Clinical Director Melissa Mahan, Katelyn leads a support group and exercise class for GIA 180 participants twice monthly. Katelyn is registered with the Commission on Dietetic Registration and holds licensure as a dietitian with the state of Tennessee. She also is a member of the Academy of Nutrition and Dietetics and serves on the board of the academy’s Knoxville chapter. In her spare time, Katelyn enjoys running, hiking and reading, as well as spending time with friends and her husband, Jesse Bianconi, a former staff sergeant in the U.S. Air Force and current University of Tennessee student.

The Protocol

Our medically developed weight loss protocol and smarter lifestyle choices education offers dieters what they really want…a structured program that can put an end to constant dieting.


Business Hours

Monday to Friday:
8:00am - 5:00pm


Gastrointestinal Associates, PC is Authorized to Use the Ideal Protein Weight Loss Protocol and Products. The testimonials on this website are those of the individual that is identified, you should not necessarily expect to receive these results. Typical results vary from person to person and individual to individual when the Ideal Protein Weight Loss Protocol is followed properly. You should consult your physician or other health care professional before starting this or any other diet program to determine if it is right for your needs.

1311 DOWELL SPRINGS BLVD Knoxville TN 37909 – Phone: 865-558-0601
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