Meet Us

Meet Us


Bonnie McKenzie, M.S., SLP

Bonnie McKenzie has over 35 years  of experience working with people of all ages with communication disorders. She has specialized in the area of Fluency Disorders for the past 30 years.  In that time, she has developed many methods and tools for addressing the complicated issues of stuttering. Bonnie is a member of the American Speech and Hearing Association and is a Board Certified Fluency Specialist. She is also a member of the Fluency Special Interest Division and the National Stuttering Association.



Masters of Science, 1983
Communication Disorders University of Arizona Tucson, AZ

Bachelor of Science, 1982
Speech & Hearing Sciences University of Arizona Tucson, AZ

Activities & Affiliations

ASHA Certificate of Clinical Competence
Board Certified Specialist- Fluency Disorders
Licensed in MO, IL, and AZ National Stuttering Association Member



Blake Wells

Blake has been with the McKenzie Center for over 8 years. I have known Blake for almost 20 years.  First, as a client, now as a friend and fellow Speech Pathologist. Blake came here for therapy when he was in college. He wanted to help others and decided to switch majors and become a Speech Pathologist (Yay!).  Fast forward several years and Blake is now a Certified Speech Language Pathologist.  He knows Speech Therapy from both sides of the table!!  Blake works with clients and their families on a variety of speech & language issues, including fluency.



Masters of Science
Fontbonne University

Speech-Language Pathology

Bachelors of Science
Fontbonne University

Biological Sciences



In her free time Bonnie enjoys

reading mystery novels and playing with her dogs, and of course visiting her hometown of Tucson, AZ as often as possible!