Medical Assurance Society

MAS Insurance, also known as Medical Assurance Society, provides insurance products specifically designed for medical professionals working in New Zealand. Its core offerings include medical indemnity coverage and related risk‑management services that address the liability exposures faced by doctors and other health practitioners. By concentrating on this professional group, the organisation tailors its policies to the unique clinical and regulatory environment of the health sector. This focus allows MAS to develop specialised underwriting expertise that differentiates it from general insurers. Consequently, it presents itself as the dedicated insurer for the medical community within the country.

MAS is described as New Zealand's largest insurer of medical professionals, underscoring its market prominence. The organisation’s headquarters are situated in New Zealand, reflecting a domestic base of operations and decision‑making. It serves members across the nation, delivering coverage to medical practitioners in various regions and health‑care settings. This national focus enables MAS to allocate resources toward understanding and mitigating the specific risks encountered by health‑care professionals. As a result, the organisation maintains a significant presence within New Zealand’s professional insurance landscape.

A distinguishing attribute of MAS is its specialisation in insuring medical practitioners, which shapes both product design and risk‑assessment methodologies. The organisation’s sector positioning as the leading provider allows it to influence industry standards for medical indemnity coverage. In December 2022, MAS experienced a cyber incident involving a third‑party after‑hours call‑center supplier, highlighting its reliance on external vendors for support services. The response included suspending the supplier’s services, advising members to update passwords, establishing limited after‑hours support, and committing to direct communication about the breach. These actions demonstrate MAS’s incident‑response capabilities and its ongoing emphasis on protecting members’ personal data.