I'm writing in the UK where we have a different medical system - the NHS - but I took a look at the US Medicare website to try to answer your question.
On the page where you can search to see whether your treatment is covered by Medicare Part B, I typed in "online consultation" into the search bar, and the answer (which referred to "Telehealth") came back as follows:
Medicare Part B (Medical Insurance) covers certain services like office visits and consultations that are provided using an interactive 2-way telecommunications system (with real-time audio and video) by a doctor or certain other healthcare provider who isn't at your location.
If you live in some rural areas, these services are covered under certain conditions and only if you're located at one of these places:
- A doctor's office
- A hospital
- A critical access hospital (CAH)
- A rural health clinic
- A federally-qualified health center
- A hospital-based or critical access hospital-based clinical dialysis facility
- A skilled nursing facility
- A community mental health center
I do hope this summary of what I found out about "Telehealth" is of some help to you but - rather than rely on what I've managed to find out - I'd strongly suggest that you take a look at the Medicare website yourself, which you can do here.