 His medical career has been cited as one of "HealthToday Philippines Magazine" 's Ten Pillars of the Philippine Health Care Industry.Gatmaitán has authored and published more than 30 storybooks for children tackling issues such as disability, senility, coping with death, coping with cancer, childhood diseases, and children's rights in his stories.His children's book series "Mga Kuwento ni Tito Dok" was cited by the Manila Critics Circle "for its popularization of the science of medicine in language and illustrations that young children can understand, for its indigenizing of universal scientific principles, and for its imaginative reconstruction of what happens in the human body."