Billing patterns of general practitioners and family physicians in Ontario: a comparison of graduates of McMaster Medical School with graduates of other Ontario medical schools.

This descriptive study which uses data obtained from the Ontario Health Insurance Plan has identified a number of differences in the style of practice chosen by general practice/family medicine (gp/fm) physicians who graduated from McMaster medical school from that of other contemporary Ontario gp/fm graduates who are practicing in Ontario. McMaster gp/fms were more likely to be certified in Family Medicine, saw fewer patients per month than the comparison group, and billed less services but the cost per service billed was somewhat higher.