Three cautions when using the tiers. Permissive does not mean unregulated:
fee-splitting and kickback statutes still apply everywhere (Florida is the
canonical example). The doctrine is specialty-specific: dental has its own
ownership statutes in most states, and they’re often stricter than medical.
And tier boundaries move: several states have proposed tightening MSO
oversight in recent legislative sessions, so re-verify before each new state.
State rules
CPOM by state
Which states restrict non-physician ownership of medical practices, grouped by enforcement intensity, with sources.
More than 30 states restrict non-physician ownership of medical entities
(source: BMD).
Enforcement intensity is what actually varies. A practical grouping,
following healthcare counsel surveys
(GuardianMD,
ByrdAdatto):
⌘I