Reading between the lines, what you're looking for is a Cardiologist who specialises in Physiology. Call your nearest Spire/Circle etc and ask who they have on their list. You'll need a referral though as they don't normally just take people off the street.
As for the Campaign, any decent Cardiologist can bat away their 'experts' opinions, most of these Cardios know each other but they're just like the rest of us, each has their own opinion.