medic
(informal), medical practitioner, registrar, surgeon, clinician, specialist,
consultant, GP (dated), general practitioner (US, dated), family doctor,
physician
academic,
scholar, expert, specialist, Doctor of Philosophy, Ph.D.
treat,
care for, look after, cure, heal, minister to
modify,
adjust, amend, meddle with (disapproving), rework, fix (babytalk), tamper with,
falsify, change, alter