But, according to a new report from leading physician groups, a number of medical tests and procedures billed as routine are largely unnecessary.
Nine medical societies have compiled a list of tests and treatments they say shouldn't be performed automatically when people see their doctors.
They say more testing is not necessarily better and money could be saved in an industry where costs are rising.
The 45 recommendations include most repeat colonoscopies within 10 years of the first test, as well as antibiotics for mild-to-moderate sinus distress. The list also includes a chest x-ray before minor surgery, MRI and CAT scans for lower back pain, and bone density tests for women under age 65.
To view the lists or learn more, visit www.choosingwisely.org.