After your visit: if a Massachusetts Certifying Healthcare Provider certifies a debilitating condition, ask whether Initial Access applies, then register free with the Cannabis Control Commission using a government ID, proof of Massachusetts residency, and a photo. Your Program ID card will be mailed. For a patient under 18, two providers must certify — one a board-certified pediatrician or pediatric subspecialist — so please ask before booking whether a provider can serve in that role.