Organization and Description of Business	6 Months Ended
Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	1. Organization and Description of Business Overview and Background American Healthcare REIT, Inc., a Maryland corporation, is a self-managed real estate investment trust, or REIT, that acquires, owns and operates a diversified portfolio of clinical healthcare real estate properties, focusing primarily on senior housing, skilled nursing facilities, outpatient medical, or OM, buildings and other healthcare-related facilities. We have built a fully-integrated management platform that operates clinical healthcare properties throughout the United States, and in the United Kingdom and the Isle of Man. We own and operate our integrated senior health campuses, or ISHC, and senior housing operating properties, or SHOP, utilizing the structure permitted by the REIT Investment Diversification and Empowerment Act of 2007, which is commonly referred to as a “RIDEA” structure. We have also originated and acquired secured loans and may acquire other real estate-related investments in the future on an infrequent and opportunistic basis. We generally seek investments that produce current income; however, we have selectively developed, and may continue to selectively develop, healthcare real estate properties. We have elected to be taxed as a REIT for U.S. federal income tax purposes. We believe that we have been organized and operated, and we intend to continue to operate, in conformity with the requirements for qualification and taxation as a REIT under the Internal Revenue Code of 1986, or the Code. Operating Partnership We conduct substantially all of our operations through American Healthcare REIT Holdings, LP, or our operating partnership, and we are the sole general partner of our operating partnership. As of both June 30, 2026 and December 31, 2025, we owned 99.0% of the operating partnership units, or OP units, in our operating partnership, and the remaining 1.0% of the OP units were owned by the following limited partners: (i) AHI Group Holdings, LLC, which is owned and controlled by Jeffrey T. Hanson, our Chairman of the Board of Directors and Chief Executive Officer, Danny Prosky, one of our non-executive directors, and Mathieu B. Streiff, one of our independent directors; and (ii) a wholly-owned subsidiary of Griffin Capital Company, LLC. Such limited partnership units are accounted for as noncontrolling interests in total equity in our accompanying condensed consolidated balance sheets. Real Estate Investments Portfolio We currently operate through four reportable business segments: ISHC, SHOP, OM and triple-net leased properties. As of June 30, 2026, we owned and/or operated 347 buildings and ISHC, which represent in total approximately 23,340,000 square feet of gross leasable area, for an aggregate contract purchase price of $5,728,543,000. In addition, as of June 30, 2026, we also owned a real estate-related debt investment purchased for $60,429,000.

Organization and Description of Business

6 Months Ended

Jun. 30, 2026

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Description of Business

1. Organization and Description of Business

Overview and Background

American Healthcare REIT, Inc., a Maryland corporation, is a self-managed real estate investment trust, or REIT, that acquires, owns and operates a diversified portfolio of clinical healthcare real estate properties, focusing primarily on senior housing, skilled nursing facilities, outpatient medical, or OM, buildings and other healthcare-related facilities. We have built a fully-integrated management platform that operates clinical healthcare properties throughout the United States, and in the United Kingdom and the Isle of Man. We own and operate our integrated senior health campuses, or ISHC, and senior housing operating properties, or SHOP, utilizing the structure permitted by the REIT Investment Diversification and Empowerment Act of 2007, which is commonly referred to as a “RIDEA” structure. We have also originated and acquired secured loans and may acquire other real estate-related investments in the future on an infrequent and opportunistic basis. We generally seek investments that produce current income; however, we have selectively developed, and may continue to selectively develop, healthcare real estate properties. We have elected to be taxed as a REIT for U.S. federal income tax purposes. We believe that we have been organized and operated, and we intend to continue to operate, in conformity with the requirements for qualification and taxation as a REIT under the Internal Revenue Code of 1986, or the Code.

Operating Partnership

We conduct substantially all of our operations through American Healthcare REIT Holdings, LP, or our operating partnership, and we are the sole general partner of our operating partnership. As of both June 30, 2026 and December 31, 2025, we owned 99.0% of the operating partnership units, or OP units, in our operating partnership, and the remaining 1.0% of the OP units were owned by the following limited partners: (i) AHI Group Holdings, LLC, which is owned and controlled by Jeffrey T. Hanson, our Chairman of the Board of Directors and Chief Executive Officer, Danny Prosky, one of our non-executive directors, and Mathieu B. Streiff, one of our independent directors; and (ii) a wholly-owned subsidiary of Griffin Capital Company, LLC. Such limited partnership units are accounted for as noncontrolling interests in total equity in our accompanying condensed consolidated balance sheets.

Real Estate Investments Portfolio

We currently operate through four reportable business segments: ISHC, SHOP, OM and triple-net leased properties. As of June 30, 2026, we owned and/or operated 347 buildings and ISHC, which represent in total approximately 23,340,000 square feet of gross leasable area, for an aggregate contract purchase price of $5,728,543,000. In addition, as of June 30, 2026, we also owned a real estate-related debt investment purchased for $60,429,000.