• We are again accepting new patients! Click on "New Patient Registration" to get started.

We are currently scheduling Initial Consultations in Spring 2018.  Click above to get started!

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​​​New Patients

Appointment Request

We believe the most important thing a doctor can do is listen. Healthcare in our country has, unfortunately, become a big business where decisions about your health are all too often left to for-profit insurance companies. Here, decisions about your health and wellness are yours. Each patient is respected as a unique individual. Together, as partners, we address the root causes of disease in order to heal your mind, body, and spirit rather than treat disease. Before giving up hope that there is a doctor who cares to help you, contact us.


I'm 24 years old and one year ago I was in the worst shape of my life.....I feared everyday was almost my last. My anxiety was uncontrollable. I had rashes developing on various parts of my body. I had constant tremors. I could only exercise for mere minutes before passing out and my joints all ached with arthritis like an old man. 

Today, one year later I can say that I am 90% better overall and continue to get better and stronger everyday. 

Dr. O'Brien saved my life....I now have the tools and the wherewithal to live the rest of my life knowing how my body functions and how I need to live in order to live a long, healthy and satisfying life.

- -Adam,  Frisco, TX

Dr. O'Brien is a true Godsend for me. I had been searching for years to find a doctor that would listen to my concerns and partner with me to find answers and Dr. O'Brien has done that and more. I feel better than I have in years. She truly is a blessing for me and my family.

- -Nancy, Gunter, TX

Office Hours

9-3 Monday - Friday


Tricia J. O'Brien, MD

4645 Wyndham Ln   Suite 140

Frisco, TX 75033

214-631-9321 Phone

888-975-4204 Fax


  • Supplement and vitamin ordering has been made easy! We have partnered with Fullscript to create a virtual dispensary for our patients. 

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Clinic News

  • We are now offering testing with Quest, Cyrex, and Genova!

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Dr. O'Brien's small town upbringing and experience as both doctor and caretaker allows her to connect with you as patient and partner.

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Our Philosophy


  • Functional medicine consultation to find the root cause of illness and achieve your best health
  • Full laboratory testing for functional medicine issues like leaky gut, SIBO, food sensitivity, nutritional deficiencies, adrenal fatigue, hormone imbalance, and more.
  • Online portal to a trusted source, Fullscript, for supplements and vitamins

Our Services

Meet Dr. O'Brien

Call 214-631-9321 or Click below                                           


Call Us:  214-631-9321