How Do I Get a Rhode Island Medical Marijuana Card? Here’s how to get a Rhode Island doctor’s certificate and a medical marijuana card: See a doctor online with Leafwell, get approved and receive a doctor’s certificate. Certification will be filled out and mailed to the patient. Once you receive the certification, fill out and finish the application and attach requested documents along with the doctors certification and mail it to the Rhode Island Center For Professional Licensing Room, 105A – 3 Capitol Hill, Providence, RI 02908-5097. Emails and faxes are not accepted. You will know if you are approved or denied in 2-4 weeks. If approved you will be contacted to arrange your photo for the ID card. Once you have the ID card you can shop at a Rhode Island dispensary.