The average pt intern salary at Petaluma was $4,992 , which is 3 percent higher than the average salary for this job in California, and 26 percent higher than the national average for this job . Pt Intern salaries at Petaluma typically range from $3,001 to $7,480 (25th to 75th percentile). The highest reported pt intern salary was $8,015. There are 9 employees at Petaluma with the job title pt intern.