And the 23-year-old has the hunger for plenty more as part of a new generation of Irish players making their mark on the world scene.
Healy was also quick to underline the fact that there is no better place for him to learn his trade than under Joe Schmidt at Leinster.
He said: "I am delighted to have my new contract signed as it means I can continue to concentrate on playing for my home province and improving my game further.
"It has been a good couple of weeks for us and so I just want to focus on playing well for Leinster to keep me firmly in the plans of Declan (Kidney) and the national team."
Ireland head coach Declan Kidney was delighted with the news and predicts big things for Healey in the coming years,
He said: "For a young player like Cian who has progressed really well over the last 18 months, this is good news as it allows him to continue to develop as a player in Ireland.
"He has approached every challenge with the same hard working attitude and if he continues to do this he can become an even better player."