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“The body is meant to move.  Let's get 'em movin'.”    -  Andy

The ProActive Staff


We are a dedicated team passionate about how people function. Our focus is to improve your function and to help your health and fitness prosper.

Brian Benjamin, PT, DPT, PRC, Owner


Brian Benjamin graduated from Ohio University and then went on to receive his Doctorate in Physical Therapy from Slippery Rock University in Pennsylvania. He lived in Estes Park, CO for 14 years before moving down to Fort Collins. He has a wonderful wife and two beautiful little girls. He started ProActive PT with his friend Andy Collingwood in 2008, after they had worked together in Estes Park for 7 years. He enjoys backpacking, biking, fishing, football, basketball, and spending as much time with his family as he can.

Brian is also Postural Restoration Certified™, a certification achieved by relatively few clinicians, in Colorado and worldwide, which has enabled him to further his capacity to help patients.

Ask Brian a question HERE!

Andy Collingwood
Andy Collingwood, ACSM EP-C, Owner

Andy Collingwood received his bachelor’s degree from Texas A&M University and is an American College of Sports Medicine Certified Exercise Physiologist (ACSM EP-C). 

He lived 14 years in Estes Park,CO before moving down to Fort Collins after opening up ProActive PT with Brian. He is married with 3 children and enjoys college football and basketball, playing basketball and soccer, hiking and beer tasting.

Andy works individually with clients in the supervised exercise program. He is also manages our internship program for students interested in pursuing PT.

Ask Andy a question HERE!

Craig Depperschmidt, PT, DPT, PRC


Craig is a native of Colorado, originally from Loveland, CO. After getting his undergraduate degree in integrative physiology from University of Colorado at Boulder, he pursued his Doctorate in Physical Therapy at Northern Arizona University in Flagstaff, AZ. He has practiced in Fort Collins as a physical therapist since 2009. Craig has extensive experience with personal injuries from his background as an athlete, which is part of the reason why he became a physical therapist. He specializes in addressing movement and postural dysfunction that leads to abnormal bio-mechanics and pain. He enjoys working with runners, triathletes, and anyone who has a desire to feel better. 

In his free time, Craig enjoys competing in running races and triathlons of all distances, climbing 14ers, and spending time with his wife and two dogs. 

Craig is one of the relatively few clinicians, in Colorado and world-wide, who is Postural Restoration Certified™.

Ask Craig a question HERE!

Rachel Kroncke, PT, DPT, CPI


Rachel is originally from Chicago, but grew up in Thornton, CO. She has a background in a variety of athletic activities, and has always had a passion for sports medicine and functional rehabilitation. Rachel graduated with a B.S. in Human Performance & Physical Education, while playing basketball for Adams State University. She then received her Doctorate of Physical Therapy from Northern Arizona University.

Rachel has experience in treating a wide variety of orthopedic conditions, but has a special interest in disorders of the foot and ankle and lumbopelvic region. She believes strongly in regional interdependence, the concept that impairments are often connected through a series of biomechanical dysfunction throughout the body. Rachel believes best practice involves combining the best available evidence with individualized patient goals and her own therapy expertise to achieve success. Her additional specializations include training in Pilates and core stabilization, postural restoration, vestibular rehabilitation, and general strength & conditioning. She is certified in dry needling.

In her free time Rachel enjoys running, hiking, snowboarding, travel, photography, spending time with family and friends, and exploring all that Colorado can offer with her husband and dogs.

Ask Rachel a question HERE!

Sara Truelsen, PT, DPT
Sara grew up in a small farming community in Southwest Colorado, but has spent several years living in Fort Collins. In 2013, Sara graduated with her B.S. in Health and Exercise Science from Colorado State University. Following a year and a half as an intern and staff member at ProActive PT Center, she went on to receive her Doctorate in Physical Therapy at Touro University Nevada. She has since returned to her home state of Colorado and rejoined the ProActive team. Sara has a special interests in functional medicine and in older adult populations. She strives to provide exceptional care to individuals of all ages.
During her free time, Sara enjoys camping, fishing, hiking, and taking advantage of all that Colorado has to offer alongside her husband, Erik, and their two dogs.

Ask Sara a question HERE!
Tracy Benjamin, PT, DPT

Tracy is from Fort Collins, Colorado. She graduated with honors from the University of Northern Colorado with a BS. She then went on to earn her Doctorate in Physical Therapy from Slippery Rock University in Pennsylvania. Tracy has over 22 years of experience as physical therapist who has worked in a multitude of settings. Tracy is certified in dry needling. She enjoys hiking, paddle boarding, sports, and spending time with her family.

Ask Tracy a question HERE!
Ruth Waller-Liddle, PT, DPT, CPI

Ruth Waller-Liddle is originally from Manchester, England. She received her
undergraduate degree from McNeese State in Louisiana and her masters from Baylor
in Texas. She then received her doctorate in physical therapy from Texas Woman’s University in Dallas, Texas. She is Trigger Point Dry Needling Level 1 and Level 2 certified through Kinetacore.

She is married and enjoys running, lacrosse, skiing and doing anything outdoors.


Ruth is the first sponsored athlete for ProActive PT. She competes (and wins) regularly in running events throughout the region. She has her Pilates mat work certification. She is certified in dry needling.

Ask Ruth a question HERE!

Sam Ek
Sam was born and raised in the San Francisco Bay Area.  He graduated from Chapman University in 2017 with a double major in music education and composition.  After graduating he moved back to the Bay Area where he worked at Gilead Sciences, taught music and dance, danced with a ballet company, and played with various theater houses around the peninsula.  In the fall of 2019 Sam moved to Fort Collins for graduate school where he developed an interest in physical therapy and decided to pursue a new career.  Sam was recently accepted into PT school.  He joined Proactive in the spring of 2021 first and looks forward to greeting and assisting you!

Ask Sam a question HERE!

Sammy Phillips

Sammy is from Fraser, Colorado. She is currently studying Health and Exercise Science with a concentration in Sports Medicine at CSU. She enjoys being by the lake and boating. Sammy is in the application process for PT school. . She enjoys learning about human anatomy and meeting new people. Sammy joined ProActive in the Summer of 2022 and can't wait to continue her pre-PT career here!

Allison Smith
Allison Smith is from Golden, Colorado. She is currently studying Health and Exercise Science with a concentration in Sports Medicine at CSU. Ally has a passion for gymnastics as she is on the CSU Club Gymnastics team! In her spare time she enjoys rock climbing and is currently applying to PT school. Allison is currently an Intern here at ProActive and is excited for this next semester.

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