The main emphasis in the NHS and Education is on evidence based practice these days which shifts matters somewhat.
Now, instead of proudly trumpetting about having seen, say 12 patients a day, you'll need to start showing that what you did for them actually worked.
It sounds insane but this has actually been the least important consideration for many years.
Having a service is not the same as offering a service that works (see earlier comments re state schools versus free ones. If free schools are shite they will close. If state schools are shite, they generally stay that way.)