To schedule an appointment,

please call 520.370.6044 

or email

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My goal is to get to the root cause of your health concerns.

Specializing in evidence-based, holistic therapies for: 


Traumatic brain injury (TBI)


Post-traumatic stress disorder (PTSD)

Night terrors (sleep terrors)

Autism spectrum disorders

Memory problems (Cognitive deficits)

Alzheimer's, Parkinson's, ALS

Chronic pain

Diabetic Neuropathy

Attention deficit disorder (ADD/ADHD)

Minimal brain dysfunction

Brain fog



Click here to download your FREE eBook - The 5 Amazing Benefits of Vitamin D - you probably didn’t know…

Copyright © 2020 Timothy M. Marshall Ph.D. • 7596 N La Cholla Blvd • Tucson, AZ 85741 • 520-370-6044 •



The statements made on this website have not been evaluated by the Food and Drug Administration. The information published on this site is not intended to diagnose, treat, cure, or prevent any disease. 


The entire contents of this website are based upon the opinions of Dr. Marshall, unless otherwise noted. Individual articles are based upon the opinions of the respective author, who retains copyright as marked. The information on this website is not intended to replace a one-on-one relationship with a qualified health care professional and is not intended as medical advice. It is intended as a sharing of knowledge and information from the research and experience of Dr. Marshall and his community. Dr. Marshall encourages you to make your own health care decisions based upon your research and in partnership with a qualified health care professional.