A Doctor Who treats children is called a paediatrician
A gastroenterologist treats diseases of the stomach.
Psychiatrist treats the diseases of your mind.
An oncologist treats cancer patients. Pediatrics is children's medicine. A pediatric oncologist would treat children who have cancer.
Haematology treats diseases of the blood; Vascular treats diseases of the vessels.
radiologist
A podiatrist is an expert who deals with diseases of the feet.
eat my nutsack
A Doctor who treats animal diseases and injuries is a veterinary surgeon (British English) - or Vet for short.
Pediatrician.
medical doctors
Epidemiologist
# A physician who treats diseases of the eyes; an ophthalmologist. # An optometrist.