Meet Our Functional Medicine Team

Dr. Dean Allen 

Doctor of Chiropractic,
Masters in Functional Medicine and Nutrition

Dr. Dean Allen has over 20 year’s clinical experience as a practitioner and health clinic owner.  He received his doctorate from Parker University in 1998 and completed a Master’s Program in Functional Medicine and Nutrition from the University of Western States in Portland, Oregon. He has excitedly witnessed firsthand how functional medicine has healed his patients and changed their lives.

Dr. Allen understands the struggles of his patients, since he’s lived through many of these struggles himself. Having recovered himself and family members from the glooming diagnostic labels of autism, dyslexia, asthma, IBS, fibromyalgia, chronic fatigue syndrome, and other autoimmune disease, Dr. Allen knows firsthand what it’s like to be diagnosed and work through healing journeys. These personal challenges and defeats were catalysts in Dr. Allen adding Functional Medicine to his practice.  

Prior to opening his Functional Medicine practice, Dr. Allen has spent years as a successful chiropractor helping thousands achieve better health. As stress and fatigue started affecting his health, Functional Medicine can into view and changed his life. Adding these principles to his practice after completing his Master’s program has furthered the ability to provide even better care and has helped  his patients achieve optimal health. Dr. Allen ventured into integrative and functional medicine training as a way to heal himself, his family and his patients through lifestyle changes such as nutrition, stress management and gut health. These are the cornerstone of optimal health and need to be implemented so that everyone can achieve their greatest potential

Dr. Allen believes that your diagnoses are not your destiny. He believes that you should have autonomy and control over your health and your body. Overall, He believes in listening, compassion, education, and support – he’s there to guide you on your journey to healing and optimal health.  

Haley Young 


Haley Young is a nutritionist with a background in clinical and community nutrition. With a broad experience in serving others, Haley has worked in a variety of dietary positions collaborating with healthcare providers and working one-on-one with patients and their families to help them practice better nutrition for their health conditions and lifestyles. While working as a food service coordinator at a children’s shelter, Haley directed the food service program, developed menus, partnered with local food banks and most of all was able to serve children and the community in need.

“Everybody engages with food in their own unique way, and good nutrition is something that we all benefit from on a cellular and even emotional level. Food influences how the body heals and grows, and bringing this importance to light has always driven my service to others.”

“If you’re sitting on a tack, the answer is not to treat the pain with aspirin. The solution is to find the tack and remove it.” Dr. Sidney Baker

1202 William D. Tate Ave.
Grapevine, TX 76051