About Us

North Texas GastroIntestinal Associates was established in 2009 in Denton, TX., by Dr. Shawn Panzer. We are committed to the independent practice of traditional fee-for-service medicine, and we plan to serve the community of Denton indefinitely. We are ethically bound to provide appropriate care to our patients from the time physicians take the Hippocratic Oath, so we do not wish to be compensated for denying or limiting your access to care. We believe that we should represent our patients’ interests only, not those of an employer or government entity. We believe that the practice of medicine is an art; it is a complex fusion of science, experience, intuition and compassion. Thank you for considering us for your care.

Shawn William Panzer, M.D.

College: Wake Forest University
Honors: Phi Beta Kappa, Summa Cum Laude

Medical School: Eastern Virginia Medical School
Honors: Medical student honor society; scholastic/service award

Internal Medicine Training: Baylor College of Medicine, Houston
Honors: Chief medical resident; clinical investigator pathway, research award; medical literature publications

Gastroenterology Training: The Johns Hopkins Hospital, Baltimore and The Baylor College of Medicine, Houston
Honors: Medical literature publications

Practice Experience: 1996 – present

Michelle Williams, FNP-C

Michelle is a Board Certified Family Nurse Practitioner through the American Academy of Nurse Practitioners (AANP) and licensed as an Advanced Practice Registered Nurse through the Texas Board of Nursing. Michelle graduated from Brookhaven College in Dallas in 2009 and began her nursing career at UT Southwestern in their lung transplant unit. She began working with Texas Health Resources in 2011 in an inpatient surgical unit. Through Texas Health,  she would have the opportunity to float and gain additional experience in day surgery and infertility treatments. In 2012, Michelle graduated Summa Cum Laude from Texas Tech University with her Bachelor of Science in Nursing. Following this, she attended the University of Texas at Arlington where she graduated with her Master of Science in Nursing in 2017. After graduating, she began working in primary care for a few years before switching to gastroenterology. Michelle has a special interest in nutrition and weight loss and is excited to join the team at North Texas GI Associates!