Director-General of Health, Stephen McKernan, is leaving the position and will be finishing later this year.
He has been in the role since 2006.
"I have decided not to seek reappointment after my current term expires at the end of July," McKernan says.
"I have thoroughly enjoyed my time in the different roles I've undertaken. The health and disability sector is an incredibly rewarding, but also very challenging work environment. I consider myself privileged to have worked with so many talented, professional and dedicated people that serve New Zealanders so well."
He says he is proud of the health system, which he describes as "world class in many areas".
"We're seeing marked improvement in key areas such as access to elective services, reducing smoking rates and improving access to primary care, coupled with an overall increase in life expectancy.
"However, with an ageing population, increasing demand and tight economic circumstances, we must continually challenge where services are provided and how they are planned and funded," he says.
McKernan's career in health includes more than 20 years in senior health management positions, including the last 12 in chief executive roles.
