Wiktionary
neonatologist
n. A person who studies or applies neonatology, the medical science for new born babies .
Usage examples of "neonatologist".
Catherine Drake, the neonatologist, as she peered over black-rimmed reading glasses to adjust the ventilator settings.
Rae turned and saw the neonatologist poking her head back into the room.
The neonatologist had examined the baby and pronounced her fit as a fiddle, if somewhat tiny.