Good cardiologist in Kochi

Recently discovered that my dad has some heart issues - his pumping fraction is low. This was found while his checkup at Jubilee Thrissur and they gave him medicines for life. He did an angiogram and has no blocks. We however, want to take a second opinion for peace of mind. Any good recommendations in Kochi? They are in palakkad and able to travel till there. I heard Rajagiri from a cousin of mine, someone else suggested Aster. Hospital or doctor recommendations anyone?