About Us

Who We Are

Amarillo Pain Associates is an Interventional Pain Practice with a Comprehensive Scope that uses Advanced Specialized Procedures to help our patients maintain active, productive lives.

APA is led by Dr. Thomas Merriman who is board certified in anesthesiology and pain management through the American Board of Anesthesiology. The focus of our practice is for our patients to receive the highest quality of care in a Christian atmosphere.

Our Team

Owner of APA

Dr. Merriman grew up in Amarillo, graduating from Tascosa High School. He returned to Amarillo in 1992 after finishing his Anesthesia Residency. He and his wife, Eileen have two daughters, Madeline and Emily, with whom he enjoys spending the majority of his free time with. He also enjoys reading, walking his dog, Millie and spending time outdoors.

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David is a native of Houston, TX and holds both a Bachelors and a Masters of Nursing Degree from the University of Texas at Arlington. As a Nurse Practitioner, he has years of experience in Interventional Pain Management and enjoys the challenges of helping people cope with Chronic Pain and live better and more productive lives.

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APA Practice Manager

Karen is a native of Houston, TX but calls Amarillo her home. Karen studied Business Management at Texas A&M, College Station, TX. With 30 years experience in Office Management, her proudest accomplishment is hiring employees who truly care about patients.

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Why choose Amarillo Pain Associates?


For Patient Convenience, most of our Services We Perform and Conditions We Treat at Amarillo Pain Associates can be Safely Performed in our Clean, Spacious, office suite. We are pleased to present a convenient and time saving way of picking up your prescriptions too. All services conveniently located under one roof!


We are an Exceptional Practice where Education, Experience, and the use of Advanced Technology come together to help Alleviate Your Pain and Regain Your Life again. We use the Highest Standards and Quality of Professional Pain Management possible. We take pride in using many Specialized Procedures to Control Your Pain.


You can be assured in your choice for Amarillo Pain Associates. Our practice is guided by the Professional Affiliations and Criteria set by The American Society of Anesthesiologists, The Texas Society of Anesthesiologists, The Texas Medical Association, The Potter/Randall County Medical Society, and the Texas Pain Society.

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