Erickson Living, formerly known as Erickson Retirement Communities is an American operator and developer of retirement communities. The company has been headquartered in Baltimore, Maryland, since 1983. The company primarily develops and operates campus-style retirement communities for adults age 62 or older. Erickson Living currently employs nearly 12,000 individuals who serve more than 20,000 residents across the nation. Founder John C. Erickson built the first Erickson community on the grounds of the abandoned St. Charles seminary in Catonsville, Maryland. By 2000, Erickson had converted the turn-of-the-century abandoned seminary at Charlestown into a retirement community with 2,500 residents. Today, the Erickson Living network has grown to 19 campuses in eleven states. In addition to independent living apartments, Erickson Living communities offer on-site continuing care services provided by staff nurses and full-time physicians. These services are also open to non-residents and Medicare and most other insurances are accepted.