"I want to be an instrument of healing,
for people and for the world,
by exposing and effectively
treating the underlying causes of disease."

- Derek W. Guillory, MD

All My Stories

Being a patient forever changes the perspective of the doctor.

Being a patient forever changes the perspective of the doctor.


My journey toward functional and regenerative medicine began with my own health concerns as a child...it's a long story, and I haven't written it down in one place, but it will be woven through the posts on this site...and published in my book, which is coming soon...


My passion for helping people heal by understanding "causes"has grown through constant and continual medical training while actively practicing for 20 years in outpatient clinics and emergency departments, treating everything from acute minor conditions to chronic, complex illness and the critically-ill.


I have an insatiable curiosity for the question most often asked by my patients… “Why am I sick?”

What else....

really love a good burger, pizza and ice cream, so don't be fooled by how much I speak about eating clean, whole, anti-inflammatory food--I am tempted at least as much as all of you!


I also have a huge head...no, really. My nickname was "head" growing up, and it was so big that I had to buy my own football helmet in junior high and in high school. They did have one that worked in college, but it still needed special, small pads to make room for my skull...it's embarrassing.

For some reason, rather than hearing my hobbies and interests, people want to read my education credentials...so, in the 3rd person:


Dr. Guillory became one of the first certified functional medicine practitioners in Texas in 2015. He earned his Bachelor of Science in Education at Baylor University in 1997, graduating Magna Cum Laude. In 2001, he graduated from the University of Texas Southwestern Medical Center in Dallas. He continued his medical training in Emergency Medicine at UT Southwestern Medical Center, graduating in 2004. He has been continuously Board Certified by the American Board of Emergency Medicine since 2005.


My Podcasts

Image by Atoms
Image by James Lee
Image by Matt Botsford

Derek Guillory, MD, On The The Erick Erickson Show


The Battle of the Masks

Reopening America and Keeping Your Health


Dr. Guillory & Dr. Shippy

Dr. Derek Guillory with Gov. Rick Perry on KOKE In The Morning


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