Primary care doctor? One in the north, one in the south?

I thought doctors now accept consultations by phone in case you are out of town.

Have not tried this ourselves since we are reasonably healthy and would set an appointment only for regular physicals twice a year.

But our PCP would assure us we can call her anytime, consulting hours of course.

As others mentioned use of the "Doc in the Box" is common, but one other thing you may want to do if you have multiple doctors in the same system is to pull a copy of your medical records onto either a thumbdrive or a cd and take that with you. It will give any other docs you need to see all the information from meds to cases and even x-ray and CT results.
We have carried these for about the last 5 years and they came in handy twice.

We have a primary care Dr in Missouri where we get our yearly Physical. We also have an internal medicine Dr. in the Rio Grande Valley.
We have a cardiologist in both Missouri and the Rio Grande Valley. We see each one once a year unless the need arises to see more often.
We spend more time in south Texas than Missouri but want to be covered on both ends.
We have Medicare and Humana. It works for us.

we don't. i needed to see a doc last april while we were still in AZ for a non CV19 issue so i just went to a local "doc-in-the-box". thru treatment and referrals i saw a doc who could be our PCP in AZ but didn't care for his methods or approach. we both have chronic but under control health issues but in the 25-yrs we've been heading to AZ in the winter/spring we've only needed to see docs twice, once for each of us.