All patient referrals other than those prohibited by Section 1235.100 are allowable under the Act. In addition, a health care worker may refer a patient who is a member of a health maintenance organization (HMO) licensed in this State for health services to an entity, outside the health care worker's office or group practice, in which the health care worker is an investor, provided that any such referral is made pursuant to a contract with the HMO. [ 225 ILCS 47/20(h) ]
Ill. Admin. Code tit. 77, § 1235.110