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Dr. Alonzo D. Williams, Sr., M.D.

Dr. Williams is a native of West Helena and has earned degrees from Arkansas State University and the University of Arkansas for Medical Sciences, where he is now a clinical instructor. He also has served as the Medical Director for the Arkansas Diagnostic Center for more than 25 years. During that time, Dr. Williams has been diligent in pursing the latest gastroenterology research and techniques in order to ensure excellent care for every patient. He serves as a gastroenterology consultant  for hospitals throughout Little Rock and is an active member of a number of prominent professional organizations, including the Arkansas State Medical Board.

Dr. Brian L. McGee, M.D.

Dr. Brian L. McGee is a Gastroenterologist who currently serves on staff at the Kanis Endoscopy Center and the Arkansas Diagnostic Center. He is board certified in Gastroenterology and Internal Medicine. Dr. McGee hails from Marion, AR, where he excelled as a student athlete. After graduation, he attended Xavier University of Louisiana where he majored in Biology-Pre Med and minored in Chemistry-Pre Med. He graduated with honors in the sciences, English, and history. Unsure of what path to pursue post graduate, Dr. McGee had to look no further than his own family: His mother’s college roommate from Univ. of Arkansas at Pine Bluff (formerly Arkansas AM&N college), the late Dr. Marian Barr, and his older sister Ivy who completed medical school at UAMS while he was in college.

He attended medical school at UAMS and stayed on to also complete his Internal medicine residency and Gastroenterology fellowship. As a recipient of a community match scholarship while in medical school, he fulfilled his obligations of practicing in an underserved community first in Hot Springs then in Benton. During that time, Dr. McGee was able to see firsthand the numerous challenges the rural hospitals and communities of Arkansas have regarding access to care.


Dr. McGee is a member of several professional societies and has many interests but one of his primary focuses remains community engagement and  education. He has been tapped as an expert in the field of gastroenterology and

served as a presenter or speaker to many groups and on numerous platforms. He currently serves as President of “Arkansas Cash for Kindness” which is a 501c3 non-profit organization that inspires kindness and compassion by highlighting various

good deeds in our local community.

Dr. McGee is married to Lara Blume-McGee, founder of the non-profit “ALS in Wonderland Foundation” which benefits those living with ALS in Arkansas. They have 4 children: Leyla and 3 year old triplets (Leia, Elle, and Brison).


Dr. Stephen A. Ziller, III, M.D.

Dr. Ziller graduated from the University of Cincinnati in Cincinnati, Ohio, and completed his GI fellowship training at the University of Arkansas for Medical Sciences. Dr. Ziller is board certified in Internal Medicine and Gastroenterology.
Dr. Ziller is now accepting new patients, call to schedule your appointment today at 501-227-7688.

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