How much money a neurologist or cardiologist earn

Very different fields. I think starting pay for a young Neurologist is about $175,000.
If you are going into Medicine to make money, you are making a mistake. You will do better getting an MBA and going to work as a Broker.

You never see a doctor get paid a few million for ruining his own business.

50th percentile baseline
Neuro & Neuro Surgeon and Cardio
$186,000 and $360,000 and $252,000 Seattle
$197,000 and $382,000 and $268,000 LA
$182,000 and $352,000 and $247,000 Houston
$204,000 and $396,000 and $278,000 NY

annually about $80,000

salary.com

Cardiology will make you A R.I.C.H. B.IT.C.H. WOOOOOOOOO!!!1