Dr T D Keenan is listed as a doctor at 294 Clyde Rd in Bryndwr, Christchurch. The website linked to the listing is Lumino's, a New Zealand group of dental practices, so this may be a dental practice rather than a general doctor, and it is worth checking before you book.
A good doctor or dentist listens, examines you carefully and explains what they find and what the options are, with no pressure. For a dental practice, a check-up usually covers teeth, gums and any sore spots, with advice on brushing, flossing and diet, and a clear treatment plan with costs. For a doctor, bring a list of symptoms, any medication and your enrolment details. Regulars know that booking a regular check-up catches problems early, that telling the practice about medical conditions and fears helps and that asking for a written estimate avoids surprises. In New Zealand, children up to 17 can get free basic dental care through the public system, and ACC may cover some injuries. Phone the practice first to confirm its services and opening hours.
For anyone in Bryndwr and Christchurch, the practice at 294 Clyde Road is worth contacting to confirm what it offers.