I waitressed at a restaurant when I was in college. It was an upscale place in the theatre district with a $50 per person check average , writte upin magazines, famous chef, etc..
One day we all showed up for work and the door was chained and there was a sign " restaurant closed"
In hindsight, the bartender has noticed that the liquor order had not been delivered for two weeks and the liquor was running low.
My point is this:
There is only one reason that a business owner does not give adequate notice to their customers and/ or employees: the impact on the revenue they need in meantime.
Low ball for a doctor imho, but the insurance industry has really put the squeeze on them and bottom lone is bottom line for some.
Standard notice is 3 months WITH referal list of at least a few MD's who have agreed to accept patients.
Records should be provided free of charge