Functional Investments, PLLC

The Leader in Physical Therapy
and Industrial Testing

At Functional Investments, we are focused on providing Physical Therapy and Industrial Testing services to all patients and companies with the highest levels of customer satisfaction & we will do everything we can to meet your expectations. With a variety of offerings to choose from, we're sure you'll be happy working with us. Look around our website and if you have any comments or questions, please feel free to contact us. Check back later for new updates to our website and more services to come.

Owners and Providers:
Dr. Patrick O'Brien, PT, DPT, COMT, CS
A graduate of Arizona State University with a Bachelor's degree in Exercise Science (1997), and he received his Doctorate of Physical Therapy from the Arizona School of Health Sciences, a division of A.T. Still University in Kirksville, Missouri (2002).  Dr. O'Brien's post-graduate accomplishments include Certification in Orthopedic Manual Therapy (COMT) using a Maitland-Australian approach, and a national Certification as a Strength and Conditioning Specialist (CSCS) through the National Strength and Conditioning Association (NSCA).

Dr. Mat Thomas, PT, DPT, Cert. DN, ATC/L, CEAS

Dr. Mat is a Colorado native and moved to Arizona over nine years ago with his wife Sumi. After earning his bachelors degree in Human Performance, Sport and Athletic Training at the Metropolitan State College of Denver, he attended A.T. Still University, in Mesa, Arizona, earning the degree, Doctor of Physical Therapy. Dr. Mat specializes in on-site industrial health, wellness and ergonomic assessments and athletic training with a focus in sports performance and athletic training. Prior to coming to Arizona in 2001, Dr. Mat spent a year working with the Denver Nuggets.

DOT Testing and Certified Provider

Dr. Robert Graham, DC

Dr. Robert Graham, completed his undergraduate studies from Cortland State University with a Bachelors of Science in Education. He then completed his Doctorate degree from Life Chiropractic College in Marietta Georgia. He has been in practice in Arizona since 1983.  Dr. Graham has been a provider of the National Registry of Certified Medical Examiners for the U.S. Department of Transportation for over 2 years.