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A physician who takes medicine seriously
Dr. Benjamin Caplan, MD is a board-certified family physician with more than two decades of clinical practice, a published research record, and a genuine belief that patients deserve more than a fast prescription and a portal login.
Training and credentials
This is not a startup physician with a weekend certification. It is a career built in academic medicine, elite Boston hospitals, and decades of direct patient care.
Academic training
Williams College, undergraduate education. Tufts University School of Medicine, MD. Boston University and Boston Medical Center, internship and residency in family medicine. Clinical experience at elite academic and university hospitals across Massachusetts.
Board-certified and professionally recognized
Board-certified in family medicine. Named among the 100 most influential individuals in cannabis medicine. Principal Investigator on multiple active research studies. Appointed as Chief Medical Officer at CED Clinic, The Commonwealth Project, CED Foundation, and EO Care, Inc.
Research and publications
Clinical credibility earned through peer review, not just patient volume.
New England Journal of Medicine
Contributed to the New England Journal of Medicine, one of the most rigorous and widely-read medical journals in the world. This is not a marketing claim. It is a credential that reflects genuine scientific scrutiny at the highest tier of medical publishing.
Principal Investigator on active research studies
Serves as Principal Investigator on multiple ongoing research studies in cannabis medicine and related clinical fields. This means direct responsibility for study design, data integrity, and clinical conclusions, not advisory or honorary attribution.
Published by Penguin Random House, global distribution
Author of the preeminent clinical guide to cannabis medicine, now in global distribution through Penguin Random House. Written for both patients and clinicians, reflecting a commitment to accessible, evidence-grounded communication at scale.
World’s largest cannabis research library
Curates what is recognized as the world’s largest cannabis research library, a resource that serves clinicians, researchers, educators, and patients seeking rigorous primary literature rather than marketing summaries.
Teaching and public engagement
Bringing clinical expertise into policy, education, and digital health infrastructure.
Harvard Business School, first lecture and first conference in cannabis medicine
Delivered the first-ever lecture on Cannabis Medicine at Harvard Business School and helped the school launch its first Cannabis Business Conference. This reflects a rare ability to bridge rigorous clinical science with real-world business and policy implications at the highest academic level.
The Commonwealth Project, first initiative promoted by a U.S. President
Chief Medical Officer of The Commonwealth Project, the first initiative of its kind promoted by a sitting U.S. President. This represents engagement at the highest levels of health policy and public health leadership in the country.
Cannabis AI (CAI), EO Care, Inc., HIPAA-compliant digital health platforms
Founder and Chief Medical Officer of CAI, Solo Sciences, EO Care, HIPAA-compliant digital health platform offering scalable, affordable, data-informed care. This reflects experience building clinical systems designed to reach patients wherever they are, not just those who live near a clinic.
CED Clinic, 30,000+ patients, Massachusetts and beyond
Founded and leads CED Clinic, which has served more than 30,000 patients across Massachusetts, the United States, and internationally. This is not a small pilot program. It is a clinical operation built on real volume, real outcomes, and real long-term follow-up.
Why add metabolic care to this practice?
After years of practice and tens of thousands of patient conversations, a pattern becomes clear: metabolic health, including weight, blood sugar, appetite regulation, and energy, sits at the center of nearly every chronic condition patients struggle with.
GLP-1 medications represent a genuine advance in metabolic medicine. But that advance is only useful if it is matched to the right patient, carefully evaluated, and followed with appropriate long-term care.
Too much of the current GLP-1 landscape is designed for speed and volume. This practice is designed for the patient who wants something more careful and more durable.
What patients consistently describe
- Being heard without interruption
- A physician who explains the why, not just the what
- A plan that accounts for their actual life, not a generic protocol
- Follow-up that feels like continuity, not a transaction
- Honest guidance when treatment is not the right fit — and a clear explanation of why
What patients say about Dr. Caplan
“He was the first doctor I have seen in years who actually seemed interested in understanding my situation rather than processing me through a system.”Patient, initial metabolic consultation
“I appreciated that he was honest about what the medication can and cannot do. No overselling. No pressure. Just a real conversation about what might actually work for me.”Patient, ramp-up visit
“I had seen other telehealth services. This was different. There was a clear sense that he had read my history, thought about my situation, and had actual opinions about what I should do.”Patient, maintenance care, transferred from another provider
If this sounds like the kind of care you have been looking for
A real evaluation. A real physician. No assembly line.