R.I. Gen. Laws § 28-33-6: Failure to provide or accept medical services.

In the case of the employer’s neglect or refusal reasonably to do so, the employer shall be liable for the reasonable expense incurred by or on behalf of the employee in providing treatment, and the refusal of the employee to accept treatment reasonably required to lessen or terminate his or her incapacity shall bar the employee from receiving compensation during the period of refusal.