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Practice Emphasis
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Accepting New Patients
Member of St. Peter's Medical Group

About Me

Anthony Williamson, MD, PhD received doctorates of medicine and pharmacology from the University of Arkansas for Medical Sciences in Little Rock, Arkansas. He received his bachelor of arts in biology from Hendrix College in Conway, Arkansas. He completed his internship in internal medicine and residency in neurology at the University of Utah School of Medicine in Salt Lake City, Utah.

Dr. Williamson is board-certified by the American Board of Psychiatry and Neurology, and is licensed to practice in Montana, Wyoming and South Carolina. He is a member of the American Academy of Neurology, the American Heart Association Stroke Council and the Montana Medical Association.

Dr. Williamson utilizes an integrated wellness and evidence-based approach to the treatment of neurologic disorders with the goal of maximizing quality of life and maintaining independence in his patients. His PhD in pharmacology gives him added insight into the use of medications and supplements. He understands that listening carefully is the first step toward effective treatment, and values patient education and joint decision making.

His areas of specialty include headache, stroke, neuropathy, dementia and Parkinson disease, as well as disorders of gait, balance and altered consciousness.

He is proficient in EMG and nerve conduction studies, EEG, nerve blocks, and botulinum toxin for migraine, dystonia and isolated head tremor.

In his free time, Dr. Williamson enjoys fishing, archery, biking, walking and spending time with his family.

Education & Training

Medical School

University of Arkansas for Medical Sciences


University of Utah School of Medicine


University of Utah School of Medicine

Board certifications & Memberships

American Board of Psychiatry and Neurology, American Academy of Neurology, American Heart Association Stroke Counsel,  Montana Medical Association


St. Peter's Health accepts most major insurances but may not be contracted with them all. To verify if we are in-network with your specific insurance, contact your insurance carrier.

Patients are expected to furnish all the necessary health insurance information and sign the medical release and insurance assignment authorizations. St. Peter’s Health will submit complete insurance claims on the appropriate forms for the charges recorded. 

Keep in mind that insurance is a contract between the patient and his or her insurance company and that St. Peter’s Health is acting only as a billing agent. St. Peter’s Health cannot pursue payment from insurance carriers in the event of non-payment or benefit denials. If a patient’s insurance carrier has not submitted payment within 30 days of billing, St. Peter’s Health expects the patient to pay the balance in full. Patients receive a monthly statement showing any account activity and the remaining balance due.