During the
2023 New Zealand general election, Brown retained Pakuranga by a margin of 18,710 votes, defeating Labour's Nerissa Henry. Following the formation of the
National-led coalition government in late November 2023, he was appointed as
Minister of Energy,
Minister of Local Government,
Minister of Transport, Minister for Auckland, and Deputy leader of the House. On 19 January 2025, Prime Minister Christopher Luxon announced Brown would be appointed as the next
Minister of Health, taking over from
Shane Reti. As part of the
cabinet reshuffle, Brown relinquished his energy, local government and transport portfolios, which were picked up by
Simon Watts and
Chris Bishop respectively. In addition, Brown became the
Minister for State Owned Enterprises. Following a
cabinet reshuffle in early April 2026, Brown regained his energy portfolio and replaced
Chris Bishop as National's campaign chair for the
2026 New Zealand general election.
Energy On 30 April 2024, Brown confirmed that the Government would invest in 25 new high speed
electric vehicle charging facilities along key routes between major urban centres.
Transport On 4 December 2023 Brown, in his capacity as Transport Minister, ordered that the transport agency
Waka Kotahi give primacy to its English name "New Zealand Transport Agency." On 12 December Brown also confirmed that the Government would be keeping its election promise to abolish "blanket" speed limits on roads and highways. He also announced that he would write to inform Road Controlling Authorities about the changes and new rule. On 21 March, Brown confirmed that Cabinet was developing new rules to replace the so-called "
Nanny state" speed limit reductions of the previous Labour Government. On 16 December Brown, in his capacity as Transport Minister, instructed the New Zealand Transport Agency to halt the Transport Choices Programme which involved funding and working with various local council projects to promote cycling, walking and public transportation. In early November 2023, the Transport Agency had unilaterally halted funding for the Transport Choices Programme amidst coalition talks to form the next National-led government. Notable projects affected by the Government's transportation policy change included the "
Let's Get Wellington Moving" programme. On 14 January 2024, Brown confirmed the cancellation of
Auckland light rail, stating that the cost of the project was unsustainable for taxpayers. On 19 March 2024, Brown confirmed that the Government would reduce the proposed road user charge on
hybrid vehicles from NZ$53 per 1,000 km to NZ$38. Earlier, the Parliamentary transport select committee had adopted a Labour and Green proposal to reduce the road user charge for hybrid vehicles to NZ$38 against the wishes of committee chair and NZ First MP
Andy Foster. Earlier in January 2024, Brown had announced that the Government would implement road user charges on both
electric vehicles and plug-in hybrids from 1 April 2024. On 9 July 2024, Brown announced that the Government would ease Clean Car Standard Rules to comply with Australian fuel efficiency standards. In response clean car lobby group "Drive Electric" said that weakening fuel efficiency standards would lead to high
petrol and
diesel prices. On 12 July, Brown announced that the Government would be introducing measures to reduce "excessive" road cone usage and to ease temporary traffic management costs. On 2 September 2024, Brown launched the Government's
National Land Transport Programme, which invested NZ$32.9 billion in building 17 "
Roads of National Significance" over the next three years. Brown also confirmed that the Government would invest NZ$6.4 billion from this sum into several public infrastructure projects including the
City Rail Link, Eastern Busway, Northwest Rapid Transit Corridor,
Auckland Airport to
Botany Busway, and the Lower North Island Rail Integrated Mobility. On 19 September, Brown announced that the Government would roll out new data collection vans to assess the condition of New Zealand roads and prevent potholes. On 5 October, Brown announced the Government's NZ$226 million roads resilience package to reduce the impact of severe weather events on roads and highways.
Local Government On 14 December 2023 Brown, in his capacity as Local Government Minister, confirmed that the Government would introduce legislation in early 2024 to repeal the outgoing
Labour Government's
Water Services Reform Programme and introduce its own water reform programme. According to media organisation
Newsroom, the Government planned to create a new type of financial separate council-owned organisations to finance water and wastewater infrastructure. Instead of the ten proposed water service entities, local councils would be responsible for complying with water regulation rules and water infrastructural investment. On 26 January 2024, Brown confirmed that the Government would halt plans to progress legislation introduced by the previous Labour Government to lower the voting age to 16 years for local government elections. On 14 February Brown, as Local Government Minister, introduced legislation repealing the previous Labour Government's
Three Waters reform programme under urgency. Brown also announced that the Government would introduce two new laws in 2024 and 2025 rolling its own "
Local Water Done Well" programme, which would emphasise local control over water infrastructure and services. On 4 April 2024, Brown announced that local and regional councils which introduced
Māori wards without polling residents
would have to hold referendums during the 2025 local elections or dissolve the wards they had established prior to the 2025 local elections. Brown also announced that the government would introduce
legislation restoring the requirement for local councils to hold referendums on Māori wards by the end of July 2024. This bill passed on 30 July 2024. On 5 May 2024 Brown and
Mayor of Auckland Wayne Brown jointly announced that Auckland would avoid a 25.8 percent rates increase as part of the Government's Local Water Done Well plan. On 8 August 2024, Brown announced that council-controlled organisations would be able to borrow money for water infrastructure from the Local Government Funding Agency. Under the Government's first Local Water Done Well legislation, local councils have a year to develop plans for funding water services they need and ensuring their financial sustainability. This legislation passed into law on 28 August 2024.
Health Following his appointment as Minister of Health on 19 January 2025, Brown reiterated that abortion rights and access to abortion services would not change under his watch, stating "every politician has views but what I'm saying is my personal views have been on the public record but we're not changing the legislation." Brown has expressed
pro-life views and once liked a social media post by fellow National MP
Simon O'Connor welcoming the
Supreme Court of the United States's
2022 ruling overturning
Roe v Wade. The
Abortion Law Reform Association of New Zealand wrote a letter to Prime Minister Luxon expressing concern about Brown's appointment due to his anti-abortion views and activism, saying "Given Mr Brown's persistent opposition to New Zealanders' bodily autonomy in the face of massive public support for abortion – 78% of New Zealanders support the right to an abortion – his appointment leaves us concerned and perplexed about the state of affairs." On 31 January 2025, Brown confirmed that the new
Dunedin Hospital would be built on the site of the former
Cadbury factory at a cost of NZ$1.9 billion. He ruled out earlier plans to refurbish the current hospital site. Brown also confirmed that the new hospital would have 351 beds, 20 short-stay surgical beds, 24 theatres, 58 emergency department spaces and 20 imaging units for CT, MRI and X-ray procedures. Brown's announcement was greeted by 35,000 protesters opposed to the cutbacks to the new hospital design. Brown reiterated the Government's position that water fluoridation was a "safe, effective, and affordable measure for improving oral health." On 7 March, Brown announced a major overhaul of
Health New Zealand including reinstating its leadership board, decentralisation and promoting private-public partnership. On 15 April 2025, Brown disagreed with the
Association of Salaried Medical Specialists union's planned strike on 1 May 2025, claiming that senior doctors were "well supported" and saying that the strike would delay healthcare and operations for thousands of New Zealanders. On 16 April, Brown announced New Zealand's first "Health Infrastructure Plan," which seeks to invest NZ$20 billion in upgrading the country's health infrastructure. In mid-May 2025, Brown announced that the New Zealand Government had allocated NZ$164 million from the
2025 New Zealand budget to expanding urgent and after-hours healthcare services nationwide over the next four years. This includes establishing new urgent and after-hours care services in
Dunedin,
Counties Manukau,
Whangārei,
Palmerston North and
Tauranga. In mid June 2025, Brown announced that the Government would be introducing legislation to amend the
Pae Ora (Healthy Futures) Act 2022; which provides the statutory framework for New Zealand's healthcare system. The proposed changes including enshrining a new statutory purpose to ensure that patients receive "timely" quality care, legislated health targets to improve accountability and management, reforming governance and financial oversight within
Health New Zealand including the selection of board members, reducing red tape and audit requirements, enhancing the advisorial role of the Hauora Māori Advisory Committee, and repurposing the iwi-Māori Partnership Boards to focus on community engagement. On 21 July 2025, Brown announced that the New Zealand Government would contribute NZ$82.5 million to the establishment of the
University of Waikato's medical school. The University and private philanthropists would contribute the remaining NZ$150 million endowment figure. In early September 2025, Brown proposed that the doctors' union
Association of Salaried Medical Specialists engage with Health New Zealand in binding arbitration in an attempt to avert planned strike action. In response, the union's leader Sarah Dalton said that the union has already participated in an unsuccessful facilitated bargaining process with the
Employment Relations Authority. Dalton described the Health Minister's intervention as "unusual and unhelpful," and suggested he was unfamiliar with employment law and the collective bargaining process. On 17 September, Brown addressed the annual
New Zealand Nurses Organisation's annual conference in Wellington. During his speech, nurses stood and turned their backs on the Minister to protest understaffing and unsatisfactory pay conditions at hospitals. The conference coincided with an
Infometrics report revealing that New Zealand's hospitals were 600 nurses short per shift in 2024. On 19 November, Brown as Health Minister announced that the Government would be suspending the issuing of new
puberty blocker subscriptions for minors with
gender dysphoria, effective 19 December. Brown cited the
Cass Review in his decision and said that the ban would remain in effect until the completion of a British clinical trial on puberty blockers. The ban was strongly condemned by the
Royal Australian and New Zealand College of Psychiatrists (RANZCP), the
Professional Association for Transgender Health Aotearoa (PATHA) and multiple other doctors in New Zealand. While the ban was supported by National's New Zealand First and ACT coalition partners, it was opposed by the opposition Labour and Green parties. On 17 December,
Wellington High Court Justice Michele Wilkinson-Smith ruled in favour of PATHA's bid to delay the new puberty block prescriptions, pending a judicial review. In mid-December 2025, Brown ordered the four regional divisions of
Health New Zealand, which operates the country's hospitals and public health services, to set efficiency targets of between 2-4.9% in order to find NZ$510 million in cost-savings, which would be redirected towards patient care and meeting government health targets. On 17 January 2026, Brown announced that the Government would invest an extra NZ$25 million to boost hospital capacity and staffing ahead of the winter months. On 2 April 2026, Brown announced that the Government would raise fuel subsidies for home and community support workers from 63.5 cents to 82.5 cents per km in response to rising fuel costs. He said that the fuel subsidy would last for at least 12 months or until the price of
91 octane petrol fell below $3 per litre for four consecutive weeks. In February 2026 the Minister of Health,
Simeon Brown, announced that AI scribes had been introduced in emergency departments throughout the country. ==Personal life ==