Collaborate
Research collaboration with Dr. Caplan
Cannabis medicine needs better evidence, and real-world practice is where many of the right questions surface first. Dr. Caplan works with researchers, clinicians and institutions to turn clinical experience into rigorous, publishable knowledge.

Focus areas
Where his work is concentrated
Real-world outcomes
How cannabinoid care performs in everyday practice, across conditions, products and patient groups.
Older adults and polypharmacy
Care models for aging patients who take many medicines, a current focus of The Commonwealth Project.
Endocannabinoid-informed care
Care pathways and payer models, including work on Medicare innovation initiatives.
Formulation and delivery
How product type, route and formulation change the effect, a theme throughout the Handbook.
Evidence tools for clinicians
A curated research library and an evidence-based research assistant that answers from the literature.
Underserved populations
Data-driven care models for patients who have had the least access to informed cannabis care.
What he brings
Clinical depth, research experience
- Longitudinal care of more than 25,000 patients at CED Clinic, and clinical guidance for more than 350,000 more
- Principal investigator at CED Clinic and CED Foundation since 2016
- Sub-investigator on randomized, double-blind, placebo-controlled trials in irritable bowel syndrome and migraine
- Research beginnings at the UCLA Brain Mapping Center on fMRI studies
- Faculty experience as assistant professor at Tufts and Boston University, and lectures on medical cannabis at Harvard Business School
- A large curated digital library of cannabis literature, and the CED Research Assistant
Ways to work together
Start a conversation
Study design
Clinical input on questions, endpoints and feasibility for cannabinoid studies.
Outcomes partnerships
Collaborative analyses of real-world care, with ethics review and patient privacy protections.
Education
Grand rounds, lectures and curricula on endocannabinoid-informed care.
Expert commentary
Clinical perspective for journalists, reviewers and policy work.
Selected work
Publications and writing
- The Doctor-Approved Cannabis Handbook. BenBella Books, 2023.
- Work featured in The New England Journal of Medicine.
- With Abbie Rosner. New study suggests cannabis may be effective for rheumatoid arthritis, and why it may not matter. Forbes, 2019.
- Q&A: Legal marijuana use in hospitals. Patient Safety & Quality Healthcare, 2019.
- The Doctor-Approved Cannabis newsletter, for patients and clinicians.