Cummins, who has more than two decades of senior leadership experience within the NHS, is currently chief executive at University Hospitals of Morecambe Bay NHS Foundation Trust.
ICB chair Emma Woollett said: 'Aaron's experience, knowledge and his demonstrated commitment to improving access, outcomes, and experience across the communities we serve is exactly what the ICB needs
'I know that Aaron's collaborative approach to leadership will enable him to continue to work successfully across our Integrated Care System, and he will be joining the Integrated Care Board at a really important time – as we work towards delivering the ambitions of the 10 Year Health Plan and our local vision for improving health and care for our population.'
Cummins added: 'The last year has seen a lot of change and challenge for teams across the ICB but despite that, they have continued to operate in a way that brings the organisation's values of compassion, integrity, respect and inclusion to life in all they do.
'There is more change ahead and it may feel difficult for some, but I truly believe that by working together and supporting each other, we can make the organisation better than it has ever been, which in turn means we can ensure our communities are getting safe and good quality care, regardless of where they live in Lancashire and South Cumbria.'