Te Rapuora O Te Waiharakeke Trust, based at Omaka Marae, was established in 1991 and was the first Maori Health Provider to be set up in the South Island. The aim was to provide for the health and welfare of the Maori people in Marlborough. It's founder organizations were the Blenheim & Omaka Maori Women's Welfare Leagues, Te Rangitane Ki Wairau Inc, Te Runanga O Te Tau Ihu O Te Waka A Maui Inc, Omaka Marae Inc, Ngati Rarua O Te Wairau Society Inc, Te Atiawa Whanau and the Nelson/Marlborough Area Health Board.

In 1993 Te Rapuora O Te Waiharakeke Trust obtained a Certificate of Incorporation under the charitable Trust Act 1957. The same year the Trust was successful in obtaining a small community Health contract from the Ministry of Health and steadily built on this over the next ten years. The late Joe Kingi was appointed manager, a position he held until his untimely death in 2003.

Today Te Rapuora represents four iwi, Ngati Apa Ki Te Waipounamu Trust, Te Atiawa Manawhenua Ki Te Tau Ihu Trust, Te Runanga O Ngati Kuia Trust and Ngati Toarangatira Manawhenua Ki Te Tau Ihu. The Blenheim & Omaka Maori Womens Welfare Leagues and the four iwi represent the Board of Trustees.