The best till i know there is nothing such as in terms of CPC but you can try CJ.com as it will be having many health advertisers who might be interested in your website and they pay good... Hope it helps...
Yes, I've also had a good experience with CJ and a lot of health-niche advertisers back there too. I've once been paid about 180 USD last month but it took me so long to cash it out as I have no back yet.
I forgot to answer the second part of your question if you are concerned about the advertisers that pay via paypal than best would be bidvertiser. You can find the link in my signature too Hope now it helps...