My Father Recently Had A Heart Attack And A Stroke,

My father recently had a heart attack and a stroke, then had two heart valves repaired and they want to put a stent in. His list of medications does not seem to make sense and although he loves his cardiologist, I do not think he is paying enough attention. I am in the medical field and although I am not a pharmacist or an M.D. I know a little bit about adverse drug reactions. Tell me if this makes sense to you...

metaprolol tartrate 25 mg 1/2 pill twice a day
potassium Cl 20 meq once daily
Losartan potassium 25 mg once a day
warfarin sodium 5 mg once daily
atorvastatin 20 mg
digozin 25mcg once daily
furosemide 40 mg once daily
aspirin once daily

I need to know if these medications are okay to take all in one day and if so, i would like to split them into 2 times a day according to the reactions. I feel that so many medications doing the same thing is redundant and unnecessary and causing problems. Please help me map this out for him.