ichidan verb, transitive verb
examine medically; check a patient; have a look at (a patient)
Used specifically for a doctor or medical professional examining a patient, checking symptoms, or taking a pulse. Not used for general 'seeing' or 'looking'.
医者に診てもらったほうがいいですよ。
You should have a doctor examine you.
先生が患者の脈を診ている。
The doctor is checking the patient's pulse.