A primary caregiver must be at least 21 years of age and a resident of Rhode Island. A primary caregiver can assist no more than five patients with their use of medical marijuana. Patients are limited to one caregiver. To recommend cannabis to patients in Rhode Island, you must be a licenced physician in Rhode Island, Massachusetts, or Connecticut. You must have a bona fide practitioner-patient relationship with the qualifying patient in question and complete a full assessment of the patient's medical history. If you have a patient that you feel qualifies for medical cannabis, you can fill out a certification form on their behalf.