Setting the standard-of-care for medical cannabis.


Excellence & Expertise.

Scientific Leadership.

Compassion & Care.

Take a look inside Manhattan’s first medical cannabis dispensary

Columbia Care is a patient-centered health and wellness company setting the standard for compassion, professionalism, quality, caring and innovation, working in collaboration with some of the most renowned and innovative teaching hospitals in the world.


To solve some of the world’s most challenging unmet medical needs


Improve lives through product innovation, research and patient experience










Our Leadership Team

The Columbia Care leadership team is a collaboration like no other in the medical cannabis industry, drawing seasoned professionals from medicine, law, finance, healthcare and operations who believe in this new frontier in medicine. Our leadership team comes from renowned businesses and organizations including Goldman Sachs, Aetna, Fidelity Investments, and the Dana-Farber Cancer Institute.

Michael Abbott

Executive Chairman
Chairman of the Board

Mr. Abbott started his financial career at Swiss Bank Corporation/SBC O’Connor and later worked at Goldman Sachs. He has since launched and run several companies. Mr. Abbott also managed the endowment of Cornell University. Prior to his career in finance, Mr. Abbott served on the London Police Force.


Nicholas Vita

Vice Chairman, Chief Executive Officer

Mr. Vita began his career as a strategic advisor at S.G. Warburg and then as a member of the Healthcare Investment Banking Department at Goldman Sachs. He has more than 20 years’ experience as an executive and an entrepreneur in finance and healthcare.

Rosemary Mazanet, MD, PhD

Chief Scientific Officer

Dr. Mazanet was an Oncologist at the Brigham and Women’s Hospital / Dana Farber Cancer Institute before starting her industry career at Amgen. She has more than 25 years of experience as an expert in all areas of Biotechnology, and is a Trustee at the University of Pennsylvania Health System.


David Hart

Chief Operating Officer

Mr. Hart served as COO of Abyrx, a venture capital backed medical device company. Prior to his time at Abyrx, he was CFO & CIO at Alpine Capital, a family investment office for the Ranawat Orthopedic Group at the Hospital for Special Surgery. Mr. Hart was formerly Partner and Head of Healthcare Equity Investments at Apelles Investment Management.


Bryan Olson

Chief Human Capital Officer

Mr. Olson was CHRO for global law firm K&L Gates and he previously held senior HR executive positions at Aetna and United Technologies Corporation. He is a former practicing employee benefits and executive compensation attorney at Skadden Arps, who started his career at Fidelity Investments.


Mary-Alice Miller

Chief Risk Officer

Mrs. Miller has served as a senior legal advisor at Fidelity Investments and General Catalyst, a venture capital firm, and spent several years running a media technology startup, which she sold in 2016. She started her career at the law firm of Ropes & Gray as a corporate and transactional attorney.


Lars Boesgaard

Chief Financial Officer

Mr. Boesgaard has more than 20 years of finance leadership experience with public companies. Prior to joining Columbia Care, Lars served as the CFO of Roka Bioscience which he helped take public through an IPO. Prior to Roka, he was an executive with Alexion Pharmaceuticals, Inc. Lars began his career at Novo Nordisk A/S.


Guy Hussussian

Chief Data Officer

Mr. Hussussian has more than 20 years of Engineering, IT, and Operations leadership experience. He started the Infrastructure Engineering and Cloud Operations Group responsible for IBM-Aspera High Speed Transfer Service. Prior to IBM he was a Director of Research & Development at VMware. He started his career as an engineer in healthcare and worked his way up to running Global IT for Workshare.

Bryant Ison

Chief Marketing Officer

Mr. Ison has over 18 years of brand marketing experience working on some of the world’s most iconic brands such as Pepsi, Band-Aid, and Clorox. Prior to joining Columbia Care, Bryant led brand building activities at PepsiCo, Johnson and Johnson, and the Clorox Company. Bryant began his career as a volunteer in the U.S. Peace Corps serving in Mail, West Africa.


Columbia Care operates with the highest standards of integrity and customer care and we strive to create a professional and compassionate environment in each of our locations. All our staff attends on-the-ground and classroom training, including participation in a rotating internship program, to ensure our patients feel welcome, safe and supported.















New Jersey


New York






Puerto Rico 




Washington, D.C.




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