West also hauled down seven rebounds while George Hill added 21 points, six boards and five assists as the Pacers reeled off their seventh win in eight games.
Indiana completed a season's series sweep of the Bulls with the win while extending their divisional lead over Chicago to four games.
The Bulls got 20 points apiece from Jimmy Butler and Marco Bellinelli but couldn't avoid their first loss in three games.
Joakim Noah added 14 points, 10 boards and five assists in the setback.
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