Hi Baldeb, welcome to Mayo Clinic Connect. You'll notice that I moved your message to this existing discussion (https://connect.mayoclinic.org/discussion/second-opinion-8/) about how to get a second opinion. @slapshotmary asked the same question and I think you'll also benefit from the advice that she got from other members.

At Mayo Clinic, you can either self-refer or ask your oncologist to submit a referral. I think most of your questions about how to self refer are answered here in this set of Frequently Asked Questions https://www.mayoclinic.org/appointments/faq

Video and phone visits can be great options for appointments before, after or in place of face-to-face care. Appointment coordinators will recommend a virtual visit if it best fits your individual needs.
- Safe in-person and virtual care https://www.mayoclinic.org/covid-19

To self refer or for your physician to submit a referral , you can get started here: http://mayocl.in/1mtmR63

Let me know if you have more questions.