Powerback Rehabilitation stands out as the highest-paying company for Physical Therapist Assistants in Kennebunk, ME. On average, employees earn $68,030 per year, offering a competitive salary. Preferred Therapy Solutions also provides a strong option, with an average salary of $57,000, making it a solid choice for those seeking a good income. Saco Bay Orthopedic and Sports Physical Therapy pays an average of $51,429, providing another attractive opportunity.