It does sound like your workload is quite unmanageable. I am in healthcare management (non clinical) and my workload and the expectations of what I can achieve in a day are just not realistic and I feel a lot of stress related to this, feeling like I'm constantly teetering on the edge of burnout.
However, I do have some tools to help me do the work of 2 people in 'only' 50 hours or so.
Firstly set priorities that are aligned to your overall goals and objectives. Eg. Maintain safe services
Priorities could be: manage risks, ensure incidents are investigated in a timely way, share learning from CG issues.
Then time block for those things. Fill your diary so people can see you are not available. You may or may not have admin support but don't let people add stuff to your diary in this blocked time. If you have regular meetings put these in first.
Consider whether meetings are useful, or essential for you to attend. Could someone else go and feed back? Could you read the minutes and action any requests for information etc? If if is a long meeting (our governance meetings can be 3h) can you just attend for part of it to do your update or hear the sections relevant to your work?
If you need to sit through a teams meeting where not all the chat is relevant to your role, do low energy tasks whilst the meeting is ongoing. I sign off time sheets and expenses, approve orders and read and delete emails during this type of meeting. Anything I can do within 2 minutes, essentially.
There is also a people element. It is so easy to be distracted by calls and drop ins to your office. Could you work from somewhere else, including home even one day a week? Or get a lovely big sign for your door saying meetings in progress, do not disturb. If you're in a shared office, put on headphones. Even if you're not on a meeting or listening to music it will make you appear unavailable and therefore less likely to be disrupted. Set expectations with your team around the kinds of interruptions you're happy to have (building on fire, CQC are in, someone has brought a baby/cake). Tell them when you will be available Eg. Mid morning coffee break or at lunchtime. Tell your manager you are struggling and ask for support.
I also recommend a book called 168 hours by Laura Vanderkam which has lots of practical advice for managing your time to get a balance of everything you need to do. The author also has a podcast of 5 minute episodes called Before Breakfast.