Robert Thaddeus O'Brien

Dr. Robert T. O’Brien, better known as "Bob" was born in Jamaica Queens, New York, on February 15th, 1963. Robert was the 5th child of Thomas and Grace O’Brien and he is survived by his loving wife of 22 years, Karen Zawadzki O’Brien, sons Danny and Jack, sisters Joanie and Kathleen, and brothers Thomas and William. Bob attended North Shore High School in Glen Head, New York, and went on to attend C.W. Post College followed by earning his D.D.S in Dentistry at New York University.

Bob grew up in the East but always had a love for the West. He was everyone’s favorite DJ before DJs even existed. You could always count on him to have a playlist that would light up the moment. Bob's love for music became one of his connections to his many nieces and nephews. He loved his family and had more friends than anyone on the planet.

His sense of Irish humor was another one of his many gifts. He possessed the ability to make others laugh even through his 9-year battle with cancer.

Bob was also an amazing photographer and videographer. You could always count on Bob to capture and share wonderful memories on film. He collected thousands of family photos and videos, as well as those of his dear friends.Bob was an avid golfer and tennis player. These activities infused his many joys including time with family and friends as well as opportunities to document life as it occurred, making the everyday tennis match or round of golf that much more memorable. Bob was a thoughtful teacher and player; both of his boys carry on his passion for the games.

Dr. Bob was always known for his caring style of dentistry. He had a knack for making people feel comfortable in his dental chair and for developing sincere and long-lasting relationships with his patients and staff.

Bob was raised as a Roman Catholic. He was devoted to his church and had an incredible love for God. His commitment to Catholicism provided him with faith and strength as he fought cancer.

Bob made his celestial departure surrounded by his family and loved ones. Many of Bob‘s friends and family believe that Captain Bob, an accomplished sailor, sailed off into the heavens surrounded by music and love.

A Funeral Mass will be held at St. Francis of Assisi on Friday, December 29, 2023 at 10:30 am. 3791 Pike Road, Longmont CO 80503.

In lieu of flowers please consider making a donation to St. Jude's Children's Research Hospital, 501 St. Jude Place, Memphis, TN 38105 in the name of Robert T. O'Brien.

Alternatively, donations can be made to the University of Colorado, Anschutz Medical Campus, Melanoma Gene Therapy Research Fund, in the name of Robert T. O'Brien, at CU Foundation, P.O. Box 17126, Denver, Colorado 80217-9155

Cremation is under the direction of Howe Mortuary & Crematory.