Exhibit 21.1 Health Care Property Investors, Inc. List of Subsidiaries - ------------------------ Texas HCP, Inc., a Maryland Corporation HCPI Mortgage Corp., a Delaware Corporation HCPI Charlotte, Inc., a Delaware Corporation HCPI Knightdale, Inc., a Delaware Corporation Texas HCP G.P., Inc., a Delaware Corporation HCPI Trust, a Maryland Real Estate Investment Trust Cambridge Medical Properties, LLC, a Delaware Limited Liability Company HCPI Indiana, LLC, a Delaware Limited Liability Company