A range of people spoke at the celebration, mainly to acknowledge their gratitude for his loyalty and willingness to work long hours.
Maniototo Hospital manager Geoff Foster was among them.
He recalled a time when he was told "if you can find a doctor that won't leave after 5 o'clock, don't let them go".
"We thank you, our staff thank you — they all think you are wonderful."
Smith reiterated that there was more to the service than just him.
"It's very little to do with me, really."
Smith acknowledged the many people who assisted him in his job.
Smith said it was also about the volunteers, St John, the cleaners, the nurses, the rescue helicopter service and the wider community.
"It's a lot to do with the fact we are part of a really good team."
He was presented with a range of gifts during the celebration, including a pounamu necklace from his family, a painting of the Kakanui mountain range from Maniototo Health Services and a staff photo from the Lions Club of Maniototo.