The #1 provider for integrated gastro, weight management and nutrition in Atlanta

Over 20 years of combined experience for treating patients with GastroWellness and weight management programs.

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Gastroenterology Atlanta Clinics

Our practice is comprised of five specialty clinics featuring physician-patient events to give you the opportunity to learn about each of these conditions and share ideas for improving services.

Comprehensive Weight Management & Nutrition Services

Treating Patients Through Diet, Lifestyle Counseling, and New Technologies

Learn more below about our comprehensive weight management and nutrition services for making a difference in your lifestyle and overall GI health.

Group Class

A weekly, evening class with a group of 10-12 individuals all beginning their weight loss journey. Classes are run by a trained psychologist and supported by the dietitian and physician. This is a 6-month intensive program.

Pre-Surgical Program

For individuals who need to lose weight prior to an upcoming surgery in order to lower their surgical risk and improve outcomes. The program will typically last  3-6 months and may incorporate physical therapists to help improve physical strength prior to surgery.

One on One Meetings

A one on one program can be very effective for losing weight to improve appearance and physical performance. These patients may need to lose just 10-20lbs. Programs are tailored to each patient and can fit any weight loss needs.

Gastric Balloon

An alternative to gastric bypass might be the temporary placement of a stomach balloon to curb appetite. We use only FDA approved procedures including Obalon and Orbera Balloon systems. Longterm, everyone will need training in diet, lifestyle, and forming daily habits. 

georgia tech GI cancer research

Donate to the Cancer Prevention Fund

Georgia Tech University, is leading the GI Cancer research in the Greater Atlanta Area to find better way to prevent GI cancers. At Gastroenterology Atlanta have started our own Cancer Prevention Fund, bringing together all of our efforts and resources to support this very special research. Learn more about it on our Cancer Prevention Fund For a Cure page. To donate and support our research fund, please follow the instructions below.

1. Enter your gift amount at the top and again in the “Other Designation” Box.

2. Then in the “If other, please specify” box, put “GI Cancer research/3200001752”.

3. Once the transaction is completed, you will receive an automatic reply indicating the transaction was successful, and thanking you for the gift.

People interested in contributing could also send a check made out to the Georgia Tech Foundation, Inc., (EIN 58-6043294), the 501(c)3 charitable corporation which receives and manages contributions made for the benefit of Georgia Tech and mail to them at 760 Spring Street, NW, Suite 400, Atlanta, GA 30308.

Meet Our Team

Dr. William D. Lyday
Dr. William D. LydayGastroenterologist
Dr. William Lyday, a North Carolina native, moved to Atlanta in 2001 following his fellowship training in gastroenterology at the University of Nebraska Medical Center. He joined a major gastroenterology practice in Atlanta in 2001 and served as a full partner until 2012. More recently he has worked with Cancer Treatment Centers of America serving as the founding Director of Gastroenterology and Nutrition Services at the Newnan campus. He has three beautiful children and resides in the Brookhaven area.
Elyse Krawtz
Elyse KrawtzRegistered & Licensed Dietitian
Elyse Krawtz is a registered and licensed dietitian nutritionist and board-certified specialist in obesity and weight management. She studied nutrition science at Pepperdine University in Malibu, California and moved to Atlanta to complete her supervised practice in dietetics with an emphasis in clinical nutrition research at Emory in 2014. Elyse and her husband reside in the Brookhaven area. Elyse is honored to be part of the Gastroenterology Atlanta team.

Our Clinics


For patients who need urgent gastrointestinal care. Bleeding, abdominal pain, nausea, vomiting, diarrhea, colitis flare, diverticulitis. A quick phone call and we can determine the best course of action.


Conditions We Treat


Learn more about the gastroenterological conditions treated by Dr. William Lyday and his team at Gastroenterology Atlanta through informative patient education videos.


Procedures We Perform


Learn more about the gastroenterological performed by Dr. William Lyday and his team at Gastroenterology Atlanta through informative patient education videos.