What is the salary range of a Physical Therapy Assistant?
As of August 01, 2025, the average annual salary for a Physical Therapy Assistant in Castro Valley, CA ranges from $69,801 (25th percentile) to $83,701 (75th percentile), with a median annual salary of $79,501 and an hourly rate of $38. A Physical Therapy Assistant's salary is shaped by several key factors, including experience level, specific skills, industry differences, company size, and more. Below, we'll explore how each of these influences compensation.