Stephen Kemble is a recently retired Honolulu internist and psychiatrist. He has been an advocate of universal single-payer healthcare and a member of Physicians for a National Health Program since 1989. In 2011, he was appointed to the Hawaii Health Authority, charged with designing a universal healthcare system covering all residents of Hawaiʻi. The HHA was dissolved in 2013 in deference to the Affordable Care Act, but Kemble has remained active in health policy and now serves on the boards and chairs the policy committees for both One Payer States and Physicians for a National Health Program.