Hawaii Medical Service Association is commonly known as HMSA. It is non-for-profit health insurance association. It serves over 700,000 people. HMSA is an associated with the Blue Cross Blue Shield Association. HMSA offers a broad line of health plans such as Preferred Provider Organization (PPO) plans and Health Maintenance Organization (HMO) plans, supplemental medicare and high-deductable plans. Apart from that, it also provides wellness programs, disease management and health education service. HMSA was incorporated in 1938 and is headquartered in Honolulu, Hawaii, United States. The postal and official address, email address and phone number (helpline) of hmsa service center is given below. The helpline of hmsa service center may or may not be toll free.