EXHIBIT 32.3

CERTIFICATION MICHAEL D. WITZEMAN

PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned, as Vice President and Controller of Chemed Corporation (“Company”), does hereby certify that:

1)The Company’s Annual Report on Form 10-K for the year ending December 31, 2021 (“Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: February 28, 2022

/s/ Michael D. Witzeman

Michael D. Witzeman

(Vice President and Controller)