Frequently asked questions What are the medical marijuana laws in Pennsylvania? Here is an overview of the medical marijuana laws in Pennsylvania: – 2016 – Senate Bill 3 (SB 3) is approved and signed into law by Governor Tom Wolf. State-level penalties for the possession, use and cultivation of cannabis by those with a valid medical marijuana recommendation and card are removed. Patients must register with the Pennsylvania Department of Health (DOH). Physicians must complete the Practitioner Registry in order to participate in the medical marijuana program. – 2018 – 8 Universities were approved by Governor Wolf and the Pennsylvania Department of Health as Certified Academic Clinical Research Centres. This is a big step forward for cannabis which, despite demonstrating a number of valuable medical properties, is under-research and not understood to its fullest potential yet.