Can anyone recommend an online doctor. I am looking to get a prescription for NDT

I used to see a doctor privately, who had my blood tested every year and prescribed NDT to me, but he has retired and I am somewhat lost. My GP is prescribing levothyroxine, but I don’t really feel well, ever.

I understand you can now have a blood test and a doctor who will read it and write you a prescription, all online. Is this the case. Has anyone any experience of it. Can anyone recommend a site.