Dr. O’Farrell is the owner and chiropractor at Atlas Athletic Clinic, where he leads with a vision to integrate sports performance, rehabilitation, and evidence-based care under one roof. With a strong foundation in athletic development and clinical practice, he is dedicated to making Atlas more than just a training and treatment center—it’s a place where faith, health, and performance intersect.

He is committed to serving others with integrity, compassion, and a relentless effort, blending hands-on care with strength & conditioning principles to both restore function and unlock performance potential. Guided by his Christian faith, Dr. O’Farrell views his work as a calling to help others live and perform to their fullest. His mission is simple: optimize function to optimize performance, and empower every patient and athlete to reach their God-given potential.

Dr. O’Farrell is the owner and chiropractor at Atlas Athletic Clinic, where he leads with a visio... Read More

Dr. Flack is a chiropractor at Atlas Athletic Clinic who brings a systematic and innovative approach to patient care. A graduate with honors from Parker University at 24 years old, he is recognized for his unique ability to integrate a wide range of techniques—including Dynamic Neuromuscular Stabilization, Neurodynamics, the McKenzie Method, Active Release Technique, Dry Needling, Motion Palpation, and Functional Range Conditioning—while promoting active care and applying the biopsychosocial model. Known for his composed and knowledgeable presence, patients often describe him as a prodigy in the chiropractic field, with a reputation for delivering effective and forward-thinking care. He is committed to helping people move out of pain quickly by encouraging early and frequent tissue loading, all while tailoring treatment to each individual’s needs. Passionate about pushing innovation and staying current with research in chiropractic and rehabilitation, Dr. Flack sees himself as a “jack of all trades” in his field, dedicated to showing that chiropractic is far more than just adjusting the spine. Grounded in his faith and grateful for the ability God has given him, he is devoted to serving others through his craft.

Dr. Flack is a chiropractor at Atlas Athletic Clinic who brings a systematic and innovative appro... Read More

Exalander Magallan, better known as “Dr. Mag,” is a Doctor of Chiropractic, Licensed and Certified Athletic Trainer (LAT, ATC), and holds a Master’s degree in Sports and Human Performance. A former collegiate runner at Hardin-Simmons University, he competed in cross country and track, specializing in the 1500m and steeplechase.

After spending years in and out of athletic training rooms throughout his own competitive career, Dr. Mag developed a passion for helping athletes avoid the cycle of constant breakdowns, recurring injuries, and incomplete recovery. Today, he works with runners and athletes of all levels, from high school competitors to collegiate, professional, and everyday athletes, using a movement-based approach that blends chiropractic care, rehabilitation, and performance principles. His goal is simple: to help people recover fully, move better than they did before injury, and perform confidently at the highest level possible.

Exalander Magallan, better known as “Dr. Mag,” is a Doctor of Chiropractic, Licensed and Certifie... Read More

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Located at: 8176 FM2478, Building 8650, Suite B, McKinney
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