Happy to provide some feedback. For context: I'm a licensed clinician (not a physician, but a related discipline) and owner of a small business within the healthcare industry. I've been in business for 12 years now, 85% of revenue is insurance-based clients, 15% is cash paying clients. I do advertise, and have experimented with different forms of advertising over the years.
I'll be brutally honest: I would not advertise with you because your site lacks credibility.
1. It appears that you're trying to cash in on the healthcare industry without knowing the industry or understanding the needs of those within it. When I clicked on the site, it took me a minute to understand what you were talking about with the term "health leads". You would never hear a physician or related healthcare provider talking about "health leads"; we call them "patients" (or maybe "clients").
When you say "you pay to select the leads you want to follow up with", it's not really clear what you mean, but it sounds like I pay you to obtain the contact information for a prospective patient? In my discipline (as well as several related disciplines) there are ethical codes which forbid providers from directly soliciting patients. It's supposed to work the opposite way. But again, it's not clear to me exactly what you mean.
2. Your fees are ridiculously high, given your sites stated purpose. I currently pay $199-300 per YEAR, per site, to be listed on several websites where the specific purpose of that site is to help people locate healthcare providers. Usually these sites add some additional value, like articles on diseases or treatments, etc. Why would I spend 200 per month on a site whose stated purpose is to help people determine their health risks when I can pay 200 a year for a site whose main purpose is to help people find me?
3. There is a huge difference between trainers and physicians, and the site feels too broadly targeted to be useful. The sites I advertise with are dedicated to the specific niche I'm operating in, i.e. either a type of medical problem, or a type of provider. Yours is just broadly targeting healthcare providers or the "wellness industry", and thus it's hard to see how it could benefit me specifically.
4. The ad copy doesn't ring true. Patients are NOT "immediately motivated" to make changes based on taking a test, and anyone who has worked in the healthcare industry knows this. In reality, they take the test and get the results and they may think "I should do something about that" but they don't, at least not right away. People struggle with motivation even after having a heart attack or being diagnosed with diabetes, so it's not plausible that an internet assessment would motivate them to contact me immediately.
Keep in mind you're also competing against free directories. I ask every new patient how they found me, and a good number actually find me through insurance company directories. This is free advertising for me as I don't even have to ask the insurance companies to list me, they do it as a service to their enrollees.
Anyway, I hope that's of some use. Not trying to be harsh, just being realistic.