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What’s needed.

A close, ongoing partnership with an expert clinician is essential for anyone who wants to use cannabis more safely and most effectively. However, such partnerships are rare and very expensive. A new approach to care is required, with the right ingredients.

Human experience

There’s no substitute for knowing a committed team of clinical experts is on your side and just the tap of a button away - to answer your questions, problem solve or simply provide reassurance.

Our team is led by one of the leading cannabis clinicians and researchers in the world. And they leverage, unique, ever-deeper sources of knowledge to help you feel - and live - better.


Ben Caplan, M.D.

One of the world’s leading cannabis clinicians, Dr Caplan oversees eo’s approach to responsible, data-informed care as well as the training of eo’s team of expert cannabis clinicians. 

After receiving his M.D. from Tufts University School of Medical, Dr Caplan trained at the UCLA Brain Mapping Center and then completed a residency in family medicine at Boston Medical Center. He has served as a principal investigator for multiple cannabis-related pharmaceutical studies and has published in premiere medical journals including the New England Journal of Medicine. 

Initially a cannabis skeptic, Caplan’s early, real-world experiences with the patients in his family practice introduced him to the potential of cannabinoid-based therapies as well as its risks. Moved by the results his patients were seeing and troubled by the lack of clinically-informed guidance available to them, Dr Caplan pursued a role as the Chief Medical Officer of Canna Care Docs (a leading cannabis clinical services and technology company), where he defined cannabis clinician training curricula and led clinical and research teams that cared for and analyzed the treatment data of over 280,000 patients. 

In 2016, Dr Caplan founded the CED Clinic a thriving cannabis medicine group based in Boston, MA. At CED, Dr Caplan has overseen the definition and delivery of cannabis treatment for over 18,000 patients. 

Hungry for ways to increase the effectiveness and lower the cost of the highly personalized, collaborative care required to help any one patient responsibly define and maintain the cannabis regimen that’s most right for them, Ben then came together with Sean Collins and Dave Batista to found eo, the world’s first digital health platform for cannabis medicine. 

His forthcoming book, “The Doctor-Approved Cannabis Handbook” will be distributed by Random House. The highly anticipated anthology shares the keys to understanding the theory, use cases, recipes, and scientific references that support medical applications of cannabis-based medicines.

Tech that empowers

All the input and feedback you provide is securely analyzed  by our proprietary data model which then generates draft care plans and insights for our clinicians to review, edit, add to and approve.

This allows them to provide guidance that’s more informed by patients like you, spend less time on administrative tasks and more time on your care.

The right products

Our recommended CBD and THC products are sourced from leading Massachusetts wholesale and delivery partners and must meet our clinical team's consistency and efficacy requirements.  

Importantly, we have no financial reason to ever recommend one product over another. So you can be sure your care is always coming first.

Our Founders


Sean Collins

A longtime startup founder and investor in data-driven guidance platforms, Sean has focused for years on helping people and businesses make decisions in the context of uncertainty. He has deep expertise in digital/app-based startups, Bayesian and ML team formation, product commercialization and distribution.


Dave Batista

A CX, design and marketing innovator, Dave co-founded, grew and sold two leading digital agencies (BEAM and Euro RSCG Circle). He has overseen product and experience design efforts for some of the largest and most disruptive consumer products, healthcare, financial services and automotive brands in the world.


Ben Caplan, MD

Ben is a board-certified family physician and internationally recognized cannabis clinician, educator, entrepreneur and advocate. He's the founder of CED Clinic Intl & CED Foundation. Trained at Tufts and BU, Ben also studied at the UCLA Brain Mapping Center. His papers have appeared in the NEJM among other publications.

Senior Data Modeler

Kristen Parton

Kristen is an innovative quantitative / algorithmic modeler with experience across medical, biotech and financial services industry verticals (Cinch, Signal Financial Technologies, Sermo, Thermo Fisher). She is expert in Bayesian, AI and decision network model design, prototyping and performance evaluation.

Project Manager

Camila O'Brien

A strategic social media marketer and researcher, Camila has successfully led grassroots audience growth and engagement efforts for several organizations. Her experience is in identifying new marketing opportunities, as well as creating and distributing dynamic content tailored to specific audiences and brands.

Board Members & Advisors

Board Member

Bill Van Faasen

Formerly Chairman and CEO of Blue Cross Blue Shield of Massachusetts, Bill is a widely recognized healthcare industry leader and innovator. Currently, he is a lead director at Liberty Mutual and Eversource and a director at Acreage Holdings, where he also served as Interim CEO.

Board Member

Steve Hoffman

Most recently the Founding Chairman of the Massachusetts Cannabis Control Commission (CCC), Steve is a nationally-recognized cannabis regulatory leader and innovator. Previously, he served as CEO of two enterprise software companies and spent over a decade as a senior partner at Bain & Company.

Board Member

John Bridge

With deep experience in health insurance, medical devices, mergers and acquisitions and cannabis investing, John brings a wealth of relevant expertise to the eo team. He is a past Head of Corporate Development at Aetna, served as CFO at Aptus Health and was an early investor in Sira Naturals, now part of AYR Wellness.

Advisor / coo

Adam Weinstein

An experienced B2B and B2C digital health executive, Adam was most recently Chief Product Officer at Calibrate (virtual metabolic health). Previously, he led clinical platform development for PillPack/Amazon Pharmacy and prior to that the data and product ops teams at athenahealth.

Advisor / Products

Nial Demena

An experienced cannabis product business leader and innovator, Nial is expert in cannabis product definition and creation, IP, contracts and licensing, strategic planning/marketing, regulatory compliance and commercialization. He is the co-founder of Vella Bioscience and Manna Molecular.  

Advisor / Safety

Caroline MacCallum, M.D.

An internationally-recognized cannabis clinician and researcher, Dr. MacCallum has treated over 5,000 patients and presented widely on cannabis safety, dosing, polypharmacy reduction and pain management. She is a faculty member in the Department of Medicine at the University of British Columbia.  

Big things are happening fast

Rollouts in new markets, new partnerships, research initiatives and special offers are all coming soon.

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