Theresa Stoker, Nurse Practitioner

Theresa Stoker joined the AHC team in November 2021. She has been a nurse for over 41 years and enjoys the time spent with patients and assisting the clinic team in providing expert care to the patients. She has experience in a variety of settings and enjoys the holistic approach to care. She earned her MS in Health Care Administration from the Independence University in Salt Lake City, UT in 2013. She acquired her MSN from Purdue University Global in April 2021 and obtained her Family Nurse Practitioner Certification shortly thereafter. Theresa became passionate about nursing after helping take care of a neighbor with her mother as a teenager and caring for the animals on her family farm.. She has completed an additional course at Injection University and is currently providing injections, to patients utilizing non harmful products like PRP, HCTPs (Human Cellular Tissue Products), Durolane, Gelsyn and trigger point injections to name a few. She currently resides in Ft. Dodge with her husband Doug. They have two daughters and three grandchildren. She enjoys reading, riding motorcycles, and fishing in he spare time!


About Dr. Josh Mason

Josh Mason, DC, is the founder and clinic director at Active Health Clinics in Fort Dodge, Iowa, where the focus is on restoring patients who are in pain and have limited mobility to health and fitness.

Dr. Mason earned his bachelor’s degree and his Doctorate of Chiropractic from Palmer College of Chiropractic in Davenport, Iowa. He has always had a passionate belief in the value of leading an active and healthy lifestyle, which he enthusiastically conveys to his patients, leading by example, of course.

Dr. Mason combines the experience he’s gained from his own athletic background with his expertise in chiropractic to help athletes at all levels overcome sports injuries and improve their performance. He works with athletes at collegiate, high school, and recreational levels. Dr. Mason also acts as an onsite company doctor for several companies who recognize the benefits of providing high-quality services to their employees.

His commitment to providing exceptional, effective, and efficient care for his patients has led Dr. Mason to become an elite provider in a treatment technique called active release technique (ART). Although chiropractic has many benefits and can be used in a wide variety of musculoskeletal conditions, it can’t address every type of soft tissue injury. Using his expertise in ART enables Dr. Mason to provide comprehensive care for a far more extensive range of conditions.

Dr. Mason is a valued member of the local community, and he’s served on a variety of boards in Fort Dodge, Iowa. He is a member of the Greater Growth Alliance. He is also an active member of the First Presbyterian Church in Fort Dodge, Iowa.



About Dr. Zach Mason

Dr. Zach Mason joined the Active Health Chiropractic team in the fall of 2011. He earned his BS degree from Excelsior College in Albany, NY and his Doctorate of Chiropractic from Palmer College of Chiropractic in Davenport, IA. His love for chiropractic has led him to a healthy and active lifestyle which he tries to impress upon his patients. With his athletic background, Dr. Mason loves to help athletes of all types overcome sports injuries and improve their performance. He has worked with athletes at collegiate, high school, and recreational levels.

Dr. Mason is a member of the American Chiropractic Association and he shares his compassion by volunteering for many causes around the world. In addition to local philanthropy, he has provided free health care in less fortunate areas of Brazil, and he plans on many future journeys to come.

Dr. Mason strives to promote health and wellness to all of his patients through chiropractic care. In July of 2014 he earned Elite Provider status in Active Release Technique (ART).


BECAUSE I honor the inborn potential of everyone to be truly healthy.
BECAUSE I desire to help the newborn, the aged, and those without hope.
BECAUSE I choose to care for the patient with the disease, not the disease.
BECAUSE I wish to assist rather that to intrude; to free rather than control.
BECAUSE I seek to correct the cause, not its effect.
BECAUSE I know doctors do not heal, only the body can heal itself.
BECAUSE I have been called to serve others.
BECAUSE I want to make a difference.
BECAUSE every day I get to witness miracles.

Dr. Zach lives in Fort Dodge with wife Emily, daughter Faith and sons Beau and Axl.



Dr. Nick Schiltz

Dr. Nick Schiltz is a 2013 graduate of Ankeny High School where he played Football and Tennis. After high school he went to DMACC to get his associates degree in liberal arts. After DMACC he pursued his career in Chiropractic and graduated from Palmer College of Chiropractic with his Bachelors of Science and Doctorate of Chiropractic degree!

While at Palmer Dr. Nick was a Mentor on campus for all new incoming students to make sure they had a smooth transition from undergrad to grad school. Dr. Nick was also a Teaching Assistant for the technique department at Palmer helping the students get the best experience in their hands on classes!

Dr. Nick was very active with sports growing up and continues to stay active playing tennis, flag football, and slow pitch softball. His love for sports is what made him want to be able to see and treats athletes of all kinds!

Dr. Nick was fortunate enough to have a chiropractor in his family and was getting adjusted ever since he was born. He was able to see at a young age how beneficial chiropractic was he knew he wanted to follow in his Uncle Toms footsteps and become a chiropractor himself!



Dr. Steve Fishman

Dr. Steve Fishman joined the Active Health Chiropractic team in the fall of 2021. He earned his BS from Eastern Illinois University in Charleston, IL where he swam D1 during his time there. He acquired his Doctorate of Chiropractic from Palmer College of Chiropractic in Davenport, IA. Dr. Steve became passionate about Chiropractic after receiving his first adjustment post a weight room injury. Chiropractic showed Dr. Steve how healing through holistic means should always be the first step towards better and longer lasting recovery. Dr. Steve uses his experience as a seasoned athlete and former swim coach to provide his patients with best and most appropriate care that their body needs. At Palmer College, Dr. Steve worked in the Rehab department and held a leadership role as his class representative at Palmer’s Student Council.

Dr. Steve lives in Fort Dodge with his wife Nikki and their two cats, Billy and Leia.



Dr. Lexi

Dr. Lexi Astor is a Fort Dodge native, graduating from Fort Dodge Senior High in 2014. She went on to earn a bachelor’s degree in Exercise Science and Sports Psychology from the University of Northern Iowa in 2018. After UNI, Dr. Lexi enrolled at Palmer College of Chiropractic in Davenport, IA where she recently graduated with her Doctorate of Chiropractic degree in June of 2022.

Dr. at Palmer, Dr. Lexi spent a large amount of her clinic experience as an intern with the sports rehabilitation department on campus in addition to general chiropractic experience. Although she is passionate about athletics, she also enjoys working with pregnant mothers and children. In the near future, she is hoping to pursue specialty education training in pediatric chiropractic.

While at UNI, Dr. Lexi was a member of the Panther volleyball team. She has carried this passion forward in her current life, coaching and playing whenever the opportunity arises. In addition to volleyball, Dr. Lexi stays active through enjoying the outdoors on the golf course, riding bikes along the local trails, and spending time on the lake. She loves adventure and traveling to new places, enjoying live music and new activities unique to the destination.

Dr. Lexi is looking forward to giving back to the community and helping her hometown grow through the power of holistic health. Go Dodgers!



About Emily Wolfe, MA, LAT, ATC

Emily Wolfe joined Active Health Clinics in August of 2013. She received her MA in Kinesiology and Sport Science from the University of South Dakota and her BA in Athletic Training from Simpson College. Emily assists the chiropractors’ adjustments through rehabilitation of the soft tissue. She utilizes soft tissue mobilization techniques and corrective and strengthening exercises to promote joint alignment and muscle balance. Emily has recently become a Co-Leader of Mama (HQ), which aims to provide services, information and educate to prepare women for the challenges and choices they may face during pregnancy, labor, postpartum and in motherhood.



Cainen Hiracheta

Cainen Hiracheta is a licensed Physical Therapist Assistant, and has been practicing for just over two years. His current specialties involve Outpatient orthopedic settings and skills working with a wide variety of differential diagnoses. His passion comes from the ability to change individuals’ lives and assist them with knowledge, education, and compassion. He is a native of Fort Dodge, Iowa. His hobbies include outdoor activities, and watching sporting events.