— LISTEE'S SPOTLIGHT —

Abbas Mohammadi, DDS

President, Chief Executive Officer, Clinical Director | Columbia Dental

Dr. Abbas Mohammadi is a dentist and entrepreneur who has been the president, chief executive officer, and clinical director of Columbia Dental since 2000. Inspired by the kindness of a local dentist during a childhood dental emergency, he earned a DMD from Aristotle University of Thessaloniki. After immigrating to the United States, he earned a DDS from Columbia University, followed by fellowships in oral microbiology and periodontology.
Columbia Dental has grown to include 13 locations across Connecticut, serving a broad range of specialties. Dr. Mohammadi maintains an active clinical presence, seeing patients seven days a week with extended hours. He is a member of the American Dental Association and sits on the board of the University of New Haven’s executive micro-MBA program. Dr. Mohammadi is proud to have dedicated his career to helping others, and Columbia Dental has been featured in media outlets including a Connecticut-area CBS affiliate and The Hartford Courant.

Marquis Homepage

Explore Dr. Mohammadi’s Marquis-hosted website for more information about his awards, achievements, and goals.

Marquis Video Biography

A Marquis-produced video biography introduces highlights from Dr. Mohammadi’s career.

Marquis Insight Magazine

Dr. Mohammadi shared his thoughts about his life and work in a cover feature in the seventh edition of Marquis Insight Magazine.

Marquis Industry Leaders

In recognition of his career record of success, Dr. Mohammadi was included in Marquis Who’s Who of Industry Leaders.

Time Magazine

Dr. Mohammadi appeared in the July 2025 issue of Time Magazine as a distinguished Marquis listee and top doctor.

Associated Press

An Associated Press article shares Dr. Mohammadi’s career journey and influences.

Times Square Feature

A national press release announces Dr. Mohammadi’s appearance on a Times Square billboard.

Wall Street Journal

Dr. Mohammadi was featured among a select group of Marquis Top Professionals in the Eastern edition of the Wall Street Journal.

Marquis Millennium Magazine

A feature in the 17th Edition of Marquis Millennium Magazine goes in-depth about Dr. Mohammadi’s professional background and influences.

Marquis Top Professionals

Dr. Mohammadi was profiled as a Marquis Who’s Who Top Doctor.

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About

Marquis Who’s Who was established in 1898 and promptly began publishing biographical data in 1899. More than 120 years ago, our founder, Albert Nelson Marquis, established a standard of excellence with the first publication of Who’s Who in America.