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Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-270557) and Form S-8 (Nos. 333-206273, 333-226629, 333-233129 and 333-273831) of National Health Investors, Inc. (the Company) of our reports dated February 26, 2026, relating to the consolidated financial statements and financial statement schedules, and the effectiveness of the Company’s internal control over financial reporting, which appear in this Annual Report on Form 10-K.

/s/ BDO USA, P.C.

Nashville, Tennessee

February 26, 2026