EXHIBIT 23

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the registration statements Nos. 333-261993, 333-255735, 333-238597, 333-236036, 333-217634, 333-210376, 333-197737, 333-180976, 333-108467, and 333-90976 on Form S-8 and in the registration statement No. 333-238050 on Form S-3 of our reports dated February 21, 2023, with respect to the consolidated financial statements of Centene Corporation and the effectiveness of internal control over financial reporting.

/s/ KPMG LLP

St. Louis, Missouri

February 21, 2023