PHI Time-Saver Calculator How much does all the time your therapists spend on manually graphing, data collection, and score sheet creation cost your practice? Learn How to Save MORE Estimated monthly savings with PHI How many patients do you serve? 250 How many hours of administration time do you spend on each client on a weekly basis? 12 What is the average hourly rate for your therapy staff? 10 What percentage of their administrative time is billable? 25 387 hours / $96750 savings/mo.