Final answer:
Philip James has had a total of nine encounters at Greensburg Medical Center over the past three years, which includes visits for annual physical exams, ear infections, and hypertension follow-ups.
Step-by-step explanation:
To calculate the total number of encounters Philip James had at Greensburg Medical Center, we need to sum all his visits for different medical issues. He had been seen twice for annual physical exams, three times for ear infections, and four times for follow-up of his hypertension. The total number of encounters is the sum of these visits.
Number of encounters = Physical exams + Ear infections + Hypertension follow-ups
Number of encounters = 2 + 3 + 4
Number of encounters = 9
Therefore, Philip James has had nine encounters at Greensburg Medical Center over the past three years.