[ploika]

My GP has extra qualifications hanging on the wall for things like minor surgery, ear syringing, that kind of thing. Others near me would mention things like asthma treatment on the website. Beyond that kind of stuff you're not really dealing with General Practice anymore.

Genetics and psychology in particular seem way too specialised for a GP to be able to offer in any serious way. It's their job (for better or for worse) to refer you to the specialists once you need/want something outside of what a GP generally offers.