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Meet The Team

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Brad Vollmer, D.C.

(503) 655-2458

Dr. Vollmer was born and raised in Anaconda, Montana. After graduating high school Dr. Vollmer attended Montana State University where he earned his Bachelor of Science in Psychology. After moving to Portland, Oregon, Dr. Vollmer attended Western State Chiropractic College and graduated in 2008 with his Doctorate of Chiropractic. 

Following chiropractic school, he began working as an associate, where he began learning more about the treatment of automobile accidents. Since that time, he has taken a significant amount of post-graduate training in whiplash related injuries and gained valuable experience in treating patients with automobile accident related injuries.

Dr. Vollmer is married with two children who keep him busy when not in the office. He also enjoys the occasional round of golf when the honey-do list and kid’s activities allow for some free time.

Melissa Johnsen

(503) 655-2458

Melissa has been with Keystone Chiropractic since 2019. She’s worked in various front office positions since 1998. Melissa graduated from Portland State University with a Bachelor of Science in Geography. When not in the office, she enjoys playing volleyball, building LEGO and spending time with her family.


(503) 655-2458

Jupiter is the Patient Relations Liaison at Keystone Chiropractic.  She loves greeting all of our patients and meeting new ones as often as possible.  Jupiter was discovered at the Oregon Humane Society in August 2019.  Since that time, she has been a wonderful addition to our family and the office.  She is currently our “Employee of the Months”.  

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