OUR STAFF

Brian Heuiser , PT

Brian opened Heuiser PT in 2003 with the goal of providing excellent care in a fun and relaxed environment. He went to Carroll College and played on the Fighting Saints Basketball team while studying Sociology. He continued his education at The University of Montana and graduated with his Masters of Science in Physical Therapy in 1998. Brian’s areas of interest include sports rehab, ACL rehab and prevention, and post-surgical care. In his spare time, Brian and his wife, Amy, can be seen following their 3 daughters around in their various athletic activities as well as an occasional fishing trip in between sports seasons. Brian is also a Board member of the Last Chance Curling Club and Strength and Conditioning Coach for the Carroll College Fighting Saints Women's Basketball team.

Andi Michalson, DPT

Andi started her career at Heuiser PT in 2006. After playing multiple sports and being named to the All-State Volleyball team for Belgrade High, she went on to Carroll College where she studied Psychology and was a member of the Fighting Saints Volleyball team. She continued her education at The University of Montana and received her Doctorate of Physical Therapy in 2006. Andi focuses on Women’s Health and is able to help anyone with pregnancy-related conditions, incontinence, and any other pelvic girdle dysfunction. She is a CAPP-OB Certified Therapist. Andi loves to read, cook, and participate in Crossfit. She chases 3 awesome daughters around with her husband Thad.

Mark Bennett, PT, ATC

Mark Bennett is a Helena native and 1992 graduate of Capital High School who started working at Heuiser Physical Therapy in 2009. He graduated from Western Montana College in 1997 with degrees in Biology and Physical Education with an emphasis in Sports Medicine. He has been a Certified Athletic Trainer since 1997 and can be found helping out at the local high schools during various sporting events. He continued his education at the University of Mary and graduated with a Masters of Science in Physical Therapy in 2001. Mark focuses on shoulder and elbow rehab especially in overhead and throwing athletes. When Mark is not at work he enjoys hiking Mt. Helena with his wife, taking bike rides with his kids, practicing photography at his kid’s sporting activities and spending time with family. Mark became a Shareholder in Heuiser PT in 2014.

Eileen Brennan, DPT, CHT

Eileen is a Helena native and Capital High graduate who started her career at Heuiser PT as a patient while recovering from ACL tears in both of her knees sustained while she was on the Lady Saints Soccer team at Carroll College. After graduating from Carroll College in 2007 and a quick career in clinical research, she decided to go to Physical Therapy school at the University of Montana, graduating with a Doctorate of Physical Therapy in 2012. Eileen is the only PT in Helena that is a Certified Hand Therapist. She focuses on hand therapy, splint fabrication, and general upper extremity care. In her spare time, she enjoys spending time with her extended family, hiking with her dogs, and listening to music around town with her husband and two sons. Eileen became a shareholder in 2019.

Arynn Darfler, DPT, OCS

Arynn is a Helena native and Capital High graduate who started her career at Heuiser PT as a patient while recovering from an ACL tear in her knee sustained in competitive gymnastics in high school. She was able to work her way back to competitive gymnastics to compete at level 8 her senior year of high school before she attended college at Colorado State University. In the summers during college, she returned home to Helena and worked as an Aide at Heuiser PT. She completed her Doctorate of Physical Therapy training at the Mayo Clinic Program in Physical Therapy in 2014 where she won awards including honors for writing the most outstanding scholarly paper, outstanding academic achievement in the physical therapy curriculum, as well as an award honoring student dedication, compassion, and being a selfless colleague. She became a staff PT at Heuiser PT in 2014. Her areas of interest include sports rehabilitation, especially with local gymnasts, neurological rehabilitation, as well as general orthopedics. Arynn is also a volunteer assistant coach at Capital High School for the cross country and track teams. In her spare time, you can find her running, hiking, cooking, baking, and spending time with her husband, son, and extended family. Arynn became an Orthopaedic Certified Specialist (OCS) in 2019, which puts her in a small group of Montanans (less than 130) that have this advanced certification.

Kasey Mannix, DPT

Kasey started her career at Heuiser PT in 2016. After winning 11 individual track state championships and 2 cross country state championships for Polson, she went to the University of Oregon to study Human Physiology and ran the 400m hurdles for their track team. She continued her education at the University of Montana and graduated with a Doctorate in Physical Therapy in 2012. She continues her love of running by helping Helena area runners identify gait impairments, find proper footwear and recover from injuries. She also has an interest in spine rehab, headaches, and TMJ dysfunction. Kasey is also certified in dry needling as an option for treatment. In her spare time, she likes to spend time outdoors with her husband and kids, run, swim, eat good food, and travel around Montana visiting friends and family.

Rachel Reishus, DPT

Rachel Reishus began her career at Heuiser PT in 2017. Rachel’s interest in physical therapy began during her youth soccer career in Kent, Washington. After being named first-team all-state for Washington three years in high school and winning the Seattle Times top defender her junior and senior year she went on to play soccer for the Lady Griz. Unfortunately, a few too many concussions prematurely ended her soccer career. As a result, she has developed an interest in concussion management as well as spine and orthopedic rehabilitation. Rachel is also certified in dry needling as an option for treatment. In her spare time, she can be found chasing elk, hiking, and camping with her husband and extended family around the hills of Helena.

Killian Gilreath, PTA

Killian is a Helena native and a Helena High School graduate who started her career at Heuiser PT in 2021. She played college soccer at the University of Great Falls while majoring in Health and Human Performance, graduating in 2016. Killian became passionate about orthopedic rehabilitation after tearing her ACL and breaking her leg while playing college soccer. She also gained an interest in neurological physical therapy due to her diagnosis of epilepsy. Following her undergrad work, Killian graduated from the PTA program at the College of Great Falls in 2018. In her spare time, you can find Killian with her fiancé, Kyle,
and her two dogs fly fishing, backpacking, hunting, camping, and visiting family and friends throughout Montana.