Your Partner
Locally owned and operated, at Twin Rivers Physical Therapy it is our mission to provide personalized physical therapy services that empower people to overcome barriers to participate in life activities at their fullest potential.
We will integrate our staff of 20, our health care partners and the community at large into a partnership to enhance this mission and create a vision for the future.
We look forward to hearing from you and are happy to address any concerns you may have about your therapy.

At Twin Rivers Physical Therapy, you are more than just a patient—you are a valued partner in your own health journey. Together, we’ll create a path toward enhanced mobility, strength, and a healthier, more active lifestyle. Let us help you regain independence and get back to the activities you love.
Core Values
At Twin Rivers Physical Therapy, we are guided by the following core values:
Trust & Responsibility
Healing &
Compassion
Growth &
Fun
What To Expect
Choosing Twin Rivers Physical Therapy means you’ll receive a comprehensive, hands-on approach to rehabilitation and wellness. Your first visit includes a detailed assessment to understand your condition, discuss goals, and create a customized plan. Treatments often incorporate evidence-based methods, such as manual therapy, mobility exercises, strength training, and patient education, empowering you with the knowledge and tools to manage and prevent injuries.
Our goal is not just recovery but equipping you with the skills needed for sustained progress and resilience. At each visit, you’ll experience compassionate care, dedicated support, and measurable improvement.
Why Choose Us?
Selecting the right physical therapy clinic can be transformative for your health and well-being. At Twin Rivers Physical Therapy, we go beyond symptom relief to promote long-term success. Our therapists use advanced, research-backed techniques tailored to your specific condition to enhance functional abilities and improve your quality of life.

We are dedicated to helping you regain control of your body and life, with a focus on empowering progress and building lasting health. At Twin Rivers Physical Therapy, you’ll find a supportive partner invested in your journey to wellness.
Meet Our Team
Our experienced team of physical therapists is committed to providing you with evidence-based care designed around your individual needs. Each therapist brings specialized expertise and dedication to our clinic, ensuring you receive the personalized treatment you deserve.

Clifford Knelsen
PT, OCS, Lead Physical Therapist

Polly Blasko Knelsen
Co-Owner

Michael Zeimantz
PT, DPT

Johanna Strehle
PT, DPT

Shelby Jose
Stretch Practitioner & Fascia Specialist







Ready to Get Started?
If you’re ready to begin your journey toward better health and mobility, Twin Rivers Physical Therapy in Clarkston, WA is here to support you. Contact us today to schedule your initial consultation and begin your journey to a stronger, healthier you!
Twin Rivers Physical Therapy is a Proud Member of:

Your Next Steps…
- Request An Appointment
- Receive A Custom Treatment Plan
- Work Hard and Progress In Your Recovery
- Recover & Enjoy Life Pain-Free!









