Kay, 58, saw a specialist in Boston in early July who recommended the operation to have a nodule removed from his vocal cord.
He received a cheer from the Yankee Stadium crowd when the theme song to "Welcome Back Kotter" was played while Kay's face was shown on the videoboard.
So happy to be back with my friends and getting a chance to do what I love. pic.twitter.com/jPYM96OjwC— Michael Kay (@RealMichaelKay) August 17, 2019
He has called Yankees games since 1992 and has been the lead TV broadcaster since 2002. He will return as the host of the The Michael Kay Show on ESPN NY 98.7 FM on Aug. 26.
The Associated Press contributed to this report.