MA caregivers must first be formally designated by a registered MMJ patient. Patients have the opportunity to list caregivers during their application process. Once they have done so, the patient can provide you, the potential MMJ caregiver, with their PIN. Then, with your government-issued ID and the patient’s PIN in hand, you can begin the application process online.
You can apply here at the Use of Marijuana Program Online System https://patient.massciportal.com/mmj-patient/login.