He has managed three (3) successful presidential campaigns within the Puerto Rico Physicians Association, the statutorily-created organization to which the islands' approximately 11,000 physicians mandatorily belong, to elect in 2014, reelect in 2016, and again reelect in 2018 the organization's current president, Dr. Víctor Ramos. The reelection of Ramos on April 10, 2016 resulted in a majority of 71.6% in a three-way race. The third re-election of Dr. Ramos, led by Domenech, took place on April 22, 2018, by another comfortable margin of 67% of all the votes cast. It was an even more historical feat than his two prior victories led by Domenech, because in the 25 years of the Colegio Médico's existence, no one candidate had ever been elected three (3) times to its presidency.