Our Staff

Steve Korthuis, DPT Steve Korthuis grew up as the sixth of seven siblings on a farm outside of Lynden. He graduated from Northwestern College in Iowa and received his Doctorate of Physical Therapy degree from Creighton University. He married Robin Bajema in 1992 and together they moved back to Lynden in 1995. Two years later they opened Lynden Family Physical Therapy. Since then, Steve has developed several areas of interest including shoulder biomechanics and rehabilitation, total joint replacement rehabilitation, balance and vertigo treatment, low back and sciatic pain relief, and orthotic fabrication. Through research based exercise and manual therapy, he promotes the “Keep Moving” approach to rehabilitation. He serves as a Clinical Instructor for several universities throughout the United States and has been an active member of the APTA, Orthopedic Section, and Private Read More...
Nicole Buurma, DPT Nikki was born and raised in Celeryville, Ohio.  After graduation from Willard High School, she attended Calvin College in Grand Rapids, Michigan where she ran cross country and track while pursuing a degree in Exercise Science.  She then moved back to Ohio and completed her DPT at Ohio University.  After one year of working as a physical therapist in a sports specialty clinic in the Chicago area, she relocated to Lynden. Nikki joined Lynden Family Physical Therapy in June of 2008. Nikki continues to run and train for marathons and other races with her friends.  She enjoys hiking and the outdoors, yoga, cooking, and exploring Lynden and the surrounding areas. Read More...
Erin Eekhoff, PTA Erin was born and raised in Pella, Iowa. She attended Pella Christian High School and graduated from Dordt College in 2009 with her Exercise Science degree. Erin continued her education and graduated from Western Iowa Tech Community College in 2011 with her Physical Therapist Assistant Degree. She worked for one year as a PTA in an outpatient orthopedic clinic before family and friends convinced her and her husband to move to Lynden. Erin began working for Lynden Family Physical Therapy in June of 2012.Erin and her husband, Michael, enjoy spending time with family, playing sports, going for bike rides, hiking, and attending church. Read More...
Heather Stremler, PTA Heather attended Seattle University and later transferred to the physical therapist assistant program at Whatcom Community College. She graduated from the PTA program in 2001 and began working in outpatient physical therapy and sports rehabilitation. She has continued her education in Pilates, gait analysis, core strengthening, balance training, myofascial release, and massage. Her patients have ranged in age from 3 months old to over 90 years old. She joined Lynden Family Physical Therapy in 2006 and immediately added to the upbeat atmosphere of the clinic. Heather enjoys spending time with her husband and three daughters. When she is not at work you can find her with her family horseback riding, skiing, hunting, gardening or fishing. Read More...
Lisa Nau, PTA Lisa attended Western Washington University for two years before pursuing her associate’s degree as a Physical Therapist Assistant. She graduated from PTA school in 2002 and was immediately hired by Lynden Family Physical Therapy. She has completed a number of continuing education courses ranging from treatment of the spine to orthotic fabrication and shoulder biomechanics. In addition to these, she has also developed skills in rehabilitative ultrasound imaging, nerve mobilization, and sports medicine for ultra-marathon runners. Lisa’s broad spectrum of education makes her an invaluable asset to the team of therapists at Lynden Family Physical Therapy. Lisa and her husband Dan have four children, Alison, Lacey, Thomas, and Jackson. They enjoy exploring the great outdoors together by boating, camping, hunting, and fishing. Lisa also loves to run and is always Read More...
Treva Postma, PTA Treva was born and raised in Lynden. She graduated from Lynden Christian High School before attending Whatcom Community College, where she graduated with her Physical Therapist Assistant degree in 2003. Immediately after, Treva joined Lynden Family Physical Therapy as a PTA and worked until she and her husband, Kelby, welcomed their first child. Over the years she has continued her work as a PTA by filling as needed, but continues to stay busy at home as well with 4 children. In her free time, Treva enjoys working outside, camping, volunteering at school and church, and spending time with family. Read More...
Tess Kortus, PTA Tess Kortus is a Lynden native, growing up in Lynden and exploring, with her family, beautiful Whatcom County. Following her graduation from Lynden Christian High School she enrolled in the Physical Therapy Assistant (PTA) program at Whatcom Community College. She joined Lynden Family Physical Therapy soon after graduation and specifically enjoys working with orthopaedic patients in order to improve their function and return them to active lives. When not in the clinic she enjoys time spent with her family and friends. Specifically, she enjoys time on the beach, water activities and boating, as well as remaining active and enjoying a wide-range of sport activities. Read More...
Cassidy Rondael, PTA Cassidy was born and raised in Lynden where she attended Lynden High School and graduated from Whatcom Community College with her Physical Therapy Assistant degree. She joined the Lynden Family PT team a few months later as a PTA. Cassidy’s favorite aspect of the job involves interacting with all of her patients and helping them succeed. She also has a special interest in working on low back and core stabilizations activities, as well as shoulder strengthening. Cassidy enjoys walking her dog, Kona, on her days off or curling up on the couch to read a good book. She also loves to enjoy going up in the mountains whether it’s hiking during the summer, or snow shoeing during the winter and spending time with her family. Read More...
Micah Bartlett, PTA Micah worked as a plastics engineer before finding his passion in physical therapy. As a triathlete and rugby player, he experienced disabling knee and back injuries. Through physical therapy he learned to correct simple imbalances in his body, as well as prevent future injuries.   He graduated from the PTA program at Whatcom Community College in 2015 and has always enjoyed working in outpatient orthopedics. He loves to help patients learn how their body works, guide them through tough injuries, or get out of chronic pain. He still plays rugby, competes in triathlons and loves to mountain bike, hike, canoe, or just take his dogs to the park. He lives in Bellingham with his wife and young daughter, and he feels blessed to live in such a beautiful part of the world. Read More...