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EDUCATION

 

University of Arizona, College of Medicine, Ph.D. in Medical Pharmacology.

Specializing in Neuropharmacology.  

 

University of Arizona, Master’s in Organic Chemistry; 

Minor in Medicinal Chemistry and Toxicology.

Bachelor's in Biochemistry.

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ABOUT

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BIO

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Dr. Tim Marshall is a Regenerative Medicine Specialist who specializes in complex brain recovery. His passion is helping his clients optimize their brain health, reverse drug-induced neurological dysfunction, and accelerate recovery from a wide range of brain and neurological injuries including concussion and traumatic brain injury (TBI), while supporting those with early-onset Alzheimer's (and dementia), and individuals with autism in achieving meaningful, measurable results. 

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As a Ph.D.-trained neuropharmacologist with over 10 years of clinical experience in regenerative medicine, he specializes in brain injury, post-concussion recovery, and cognitive optimization. He combines formal scientific training in neuropharmacology, nutritional biochemistry, and toxicology with extensive hands-on clinical experience and personal research to support brain health and functional recovery. 

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Dr. Marshall specializes in working with individuals facing complex neurological challenges - particularly brain injury and persistent post-concussion symptoms - using advanced, personalized, evidence-based strategies to drive real, measurable improvement, whether they are early in recovery or have not found success with conventional approaches. 

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His approach is informed not only by formal training and clinical experience but also by personal experience: in 2022, he recovered from two head injuries coupled with complications from long Covid (that nearly took his life), applying the same time-tested, regenerative strategies he now uses with clients. This lived experience informs every client strategy he creates, combining clinical expertise with first-hand insight into what it takes to truly recover and heal.

 

Copyright © 2026 Timothy M. Marshall Ph.D. • Tucson, AZ 85718 • 520-370-6044 • office@drtimothymarshall.com

 

 

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.

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