Czermak is remembered for his contributions made in the field of laryngology. He was Professor of Laryngology and Otology at Trinity College. He founded and edited the "Journal of Laryngology and Rhinology". Subspecialties include otology-neurotology, rhinology, facial plastics, head and neck surgery, laryngology, pediatrics, and sleep. He also studied laryngology in England. His son M. Charles Liberman is Professor of Otology and Laryngology at Harvard Medical School.