What I Do


Comprehensive history with individualized recommendations and plan on initial consultation.


Careful review of natural alternatives to medication with an emphasis toward eliminating symptoms by

addressing their root cause.


Counseling around diet and environmental influences that impact health and wellness.



Traditional office consults are done at my NW office (and in the greater Tucson area), however, consultation on many subjects can be provided by phone or Skype nationwide.

NorthStar Neurology and Hyperbarics PC

7596 N. La Cholla Blvd.  Tucson, AZ 85741       

phone:  520.370.6044


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.