Cornerstone Collective is California’s first research-based medical cannabis collective, established in 2007 under California’s Compassionate Use Act.
We are a non-profit collective whose focus is on cannabis therapeutics and the wide variety of its medicinal applications. Our goal is to provide a safe, responsible, and welcoming environment for our patient community. Drawing on over 9 years of practice we offer personalized service aimed at effectively treating specific conditions. We employ strict testing standards to ensure the purity and quality of our medical grade products.