Superman -- if your cardiologist won't prescribe warfarin, perhaps your primary care physician will do it.
You don't have a track record for having self-tested, so you can't show a spreadsheet with all your tests and dosage changes - but if you convince this doctor that you're fully able to self-test and, at some time, start to manage your dosage, it may be easier to get the prescription for warfarin.
FWIW - I didn't have to produce a spreadsheet to convince my primary physician to prescribe warfarin. Perhaps you might be as fortunate.
You don't have a track record for having self-tested, so you can't show a spreadsheet with all your tests and dosage changes - but if you convince this doctor that you're fully able to self-test and, at some time, start to manage your dosage, it may be easier to get the prescription for warfarin.
FWIW - I didn't have to produce a spreadsheet to convince my primary physician to prescribe warfarin. Perhaps you might be as fortunate.