Healthcare Trust of America, Inc. is a real estate investment trust. The Company is an owner and operator of medical office buildings (MOBs) in the United States. The Company focuses on owning and operating MOBs that serve healthcare delivery and are located on health system campuses, near university medical centers, or in community core outpatient locations. As of December 31, 2016, the Company's portfolio consisted of approximately 17.7 million square feet of gross leasable area. As of December 31, 2016, the Company's portfolio included MOBs, such as single-tenant and multi-tenant, and other healthcare facilities, such as hospitals and senior care. As of December 31, 2016, the Company's portfolio had 355 buildings located in 31 states. As of December 31, 2016, the Company's properties were located in various states of the United States, such as Alabama, Arizona, California, Colorado, Florida, Georgia, Hawaii, Illinois, Indiana, Kansas, Maryland, Michigan, Minnesota, Nevada and Utah.