I'd look long and hard and serum 25(OH)D, vitamin K and William Davis' site heartscan blog. Have you had a lipid profile that included a VAP or NMR? It'd also be worth being off dairy/calcium.
Since you already have CAD (that wasn't clear in your original post) and have already had at least one coronary event, William Davis would really be the best source of info....especially if you have a complex familial hyperlipidemia - which is very possible given that you're the "healthy in shape guy" who has CAD and who has had a heart attack.