Lahey Billerica originally opened in 1981 as Internists, Inc., a group practice that provided local primary care to patients in Arlington, Billerica and Belmont. In 1993, that practice became Lahey Billerica, Lahey's first community group practice. At Lahey Billerica, there are three physicians and one physician's assistant dedicated to the site, as well as several physicians from Lahey Arlington who have office hours at the practice throughout the week. For the convenience of our patients, radiology, bone densitometry and laboratory services are available on-site. In terms of primary care services, we offer patients both well and sick visits.