about cardinal physical therapy

Healthy field

Located in South Sioux City, Nebraska

Why Patients Choose Us

Personalized Care

Every treatment plan is designed specifically for the individual patient and their goals

Advanced Hands-on Treatment

Our therapists are trained in specialized techniques, including advanced manual therapy and dry needling, to help restore movement and reduce pain.

Care for all activity levels

From high-level athletes and runners to individuals managing complex conditions like Parkinson’s disease, we help patients regain confidence in their bodies.

A welcoming local clinic

As a locally owned clinic serving the Siouxland community, we’re committed to providing compassionate care in a supportive and encouraging environment.

Headshot of a man with curly brown hair, smiling, wearing a light-colored collared shirt against a neutral background.

Dr. Isaac Tubbesing, DPT

Owner

Helping people move better - from high-level athletes to complex neurological conditions.

Isaac founded Cardinal Physical Therapy to provide highly personalized, high-quality care to the Siouxland community. As a Certified Orthopedic Manual Therapist (COMT), he is trained in advanced hands-on techniques and joint manipulations that many therapists do not perform.

He works with runners, baseball players, and high-level athletes, as well as patients with complex conditions like Parkinson’s disease, helping people move better and stay active.

Outside of his professional work, he enjoys a range of hobbies including regular exercise, experimenting with different recipes on the grill and smoker, cheering on college sports (Go Big Red!), learning to play golf, and spending quality time with his wife, three daughters, and their pets.

  • A young man with short red hair and blue eyes smiling and wearing a gray zip-up jacket over a black shirt against a plain off-white wall.

    DR. CHAD WIEBELHAUS, DPT

    PHYSICAL THERAPIST

    Helping patients move better and return to the activities they love

    Chad helps patients recover from injury, improve mobility, and return to the activities they enjoy most. Originally from Stratsburg, Colorado, he earned his Doctorate in Physical Therapy from the University of South Dakota and is passionate about providing thoughtful, patient-centered care.

    Outside the clinic, Chad enjoys traveling, studying history, and spending time with his wife. A fan of golf and a good caramel latte, he hopes to someday explore Northern Europe - especially Ireland and Germany.

  • Bilingual Spanish speaking physical therapist assistant in South Sioux City

    ITHZELL ACEVES HURTADO

    PHYSICAL THERAPY ASSISTANT (PTA)

    Bilingual physical therapy care for the Siouxland community

    Izthell is a bilingual Physical Therapy Assistant who is passionate about helping patients feel comfortable, supported, and confident during their rehabilitation. A graduate of the WITCC PTA program and a South Sioux City native, she proudly provides care in both English and Spanish, helping ensure more members of the Siouxland community can access quality physical therapy.

    Outside of work, Ithzell enjoys spending time with family, travelling to Mexico each year, and caring for her two dogs Milo and Goofy.

  • Physical Therapy Office Manager in Siouxland

    MALLORY ZARN

    OFFICE MANAGER

    Creating a welcoming and seamless patient experience

    Mallory keeps Cardinal Physical Therapy running smoothly by coordinating patient care, managing clinic operations, and supporting the team behind the scenes. Her goal is to make every patient’s experience - from scheduling to checkout - easy and welcoming.

    With a background in the trucking and construction industries, she brings strong organizational and problem-solving skills to the clinic. Outside of work, Mallory enjoys gaming, building LEGO creations, playing guitar, sailing with her husband, and spending time with her two cats.

  • Close-up portrait of a smiling Morgan Tubbesing with long wavy brown hair, wearing a cream-colored blouse, sitting indoors.

    MORGAN TUBBESING

    CO-OWNER

    Connecting the clinic with the community

    Morgan helps guide Cardinal Physical Therapy’s growth through community outreach, patient education and marketing. With a background in consulting, special education and instructional design, she is passionate about helping the clinic connect with and serve the Siouxland community.

    Originally from Jackson, Nebraska. Morgan holds a Master’s degree and has experience as a graduate adjunct instructor. Outside of work, she enjoys reading, cooking, yoga, and gardening, and spending time with her husband, their three daughters, their yellow lab Sunny, and two tabby cats.