[GoodOldNe]

It's complicated. Physicians can own imaging equipment, for example, but they can't require you to use it for the radiology tests that they order. There are weird carve-outs for in-office ancillary services (e.g. you're an orthopedic surgeon who uses x-rays in your office, which is common and arguably necessary).

There's also rules regarding things like percentage ownership of physician owned facilities and the percentage of referrals to that equipment that come from the physician owners.

Urine drug screens in an in-office "lab" are another big source of revenue for certain specialties that involve referring patients to your own tests, or doing your own pathology on biopsies as a dermatologist or whatever. My understanding is that most of those things, and many like them, are not Stark law violations.