Nikola Jokic has the most games by a center with 14+ assists, with 11 games.

most 14 assist games by centers list
Interpreted as:
most 14 or more assist regular-season games by centers list
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Nikola JokicNikola Jokic1116835.921.912.615.
Domantas SabonisDomantas Sabonis34332.017.312.714.
Joakim NoahJoakim Noah22834.910.511.
Marc GasolMarc Gasol11438.
Pau GasolPau Gasol11437.
StatMuse has game-level data for assists going back to the 1982-83 season.