Barton Associates specializes in providing the healthcare industry with the best in class staffing (locum tenens)services throughout the United States.Since its inception Barton has prided itself on building exceptional relationships with both its clients and its providers. All of which originates from their word-class training program and strong commitment to their employees.locum tenens; a Latin term meaning “holding the place” is a 4.4 billion dollar industry that is projected to reach 6.2billion within the next 5 years,as our industry continues its rapid growth path. Barton Associates is poised to grow along with it. Barton Associates was founded in a small office in Massachusetts’ North Shore. Since then, the company has grown to over 700 employees in 10 offices across 7 states(Massachusetts, Florida, Connecticut, Texas, New Hampshire, Nevada and Arizona) with more on the horizon.