You need to find another physician who will discuss your lab results with you. Do so at the earliest opportunity. As of yesterday. Your doctor seems to think this is 1934.
There are few reasons to be on Warfarin, unless you have had a heart valve replacement. It is one of my pet peeves, and a drug that is generally inappropriately prescribed. There are alternatives that provide less anti-clotting, but are far safer and easier to tolerate. You have to ask for them.
It appears you have had what is commonly called a "stroke". but that is a rather meaningless term. I wouldn't be overly worried.
Surgury is rarely necessary for a frozen shoulder, but you have already had the surgery, so that is "spilled soup".
An opininon from someone who isn't adverse to explaining a radiological report to you that has to do with your own life!
Oh, I see you saw a neurologist- I'd get a second opinion there then. I hope they are making sure your blood pressure is under control and your lipid panel is in range!
I hope maybe a doctor will respond here. I would suggest you get a referral to a neuroopthamologist as well as a regular neurologist and ask for an MRA/MRV.