A physician who takes medicine seriously
Dr. Benjamin Caplan, MD is a board-certified family physician with more than two decades of clinical practice, an active research record, and a genuine belief that patients deserve more than a fast prescription and a portal login.
Why does a cannabis medicine background belong on a metabolic care page?
Because specialty cannabis medicine required years of working in a clinical environment where enthusiasm often moved faster than evidence, patients arrived with complicated medication histories, and generic protocols routinely failed to capture the whole picture.
That work sharpened a useful clinical habit: separate signal from promotion, understand what the patient is actually trying to accomplish, start thoughtfully, observe what happens, and adjust based on the person rather than the protocol alone.
Metabolic medicine is a different field. The medications, evidence base, and regulatory pathways are different. The clinical discipline of careful evaluation and longitudinal follow-up, however, transfers remarkably well.
Training and credentials
This is not a startup physician with a weekend certification. It is a career built in academic medicine, 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 across Massachusetts hospitals and regional healthcare centers.
Board-certified and professionally licensed
Diplomate of the American Board of Family Medicine (ABFM). Full Physician License #240562 issued by the Commonwealth of Massachusetts Board of Registration in Medicine. National Provider Identifier (NPI): 1962722637. Founder and Chief Medical Officer at CED Clinic and CED Foundation.
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 reflects genuine scientific scrutiny at the highest tier of medical publishing.
Principal Investigator on clinical studies
Serves as Principal Investigator evaluating clinical outcomes, patient symptom reduction, and prescription deprescribing trajectories across an observational registry cohort of 81,008 patients and 130,447 longitudinal visits.
Published internationally by Penguin Random House
Author of The Doctor-Approved Cannabis Handbook, in global distribution through Penguin Random House. Written for both patients and clinicians, reflecting a commitment to accessible, evidence-grounded medical communication.
CED Command Center Literature Observatory (127,584+ Studies)
Architect of the CED Command Center computational literature observatory, indexing and cross-referencing more than 127,584 peer-reviewed scientific studies across pharmacology, metabolic kinetics, and clinical therapeutics.
Teaching and public engagement
Bringing clinical expertise into policy, education, and digital health infrastructure.
Harvard academic lectures and conference leadership
Lecturer and affiliated faculty participant in Harvard Medical School postgraduate and executive education programs. Delivered the first lecture on cannabinoid medicine at Harvard Business School and supported the launch of its initial specialized conference.
The Commonwealth Project: public health initiative
Chief Medical Officer of The Commonwealth Project, an initiative promoted by a U.S. President, reflecting engagement at the highest levels of healthcare policy and public wellness advocacy.
Clinical protocol design & care roadmaps
Author of standardized clinical care timelines that guide patients safely through GLP-1 initiation, dose titration, and long-term metabolic stabilization. Explore our Practical Steps & Visit Schedule.
Ready to consult directly with Dr. Caplan?
Personalized telehealth visits, clear medical explanations, and unhurried care tailored to your history.