The Hawaii Medical Service Association (HMSA), an independent licensee of the Blue Cross and Blue Shield Association, is a re ... liable name in Hawaii health care. Established in 1938, we are the largest and most experienced provider of health care coverage in the state. Over half of Hawaii’s population have chosen HMSA for their health care coverage. We are dedicated to providing quality, affordable health plans; employee benefit services; and worksite wellness programs. HMSA also offers a variety of programs, services and support to help improve the health and well-being of our members and community. read more