Ask around to see who of your friends or co-workers has a good PCP. People who have good docs just love to talk about how good they are. Get recommendations from them (verbally) as to how they feel about the docs they have.
Ask at the ER if any docs have a private practice outside of the hospital. Ask nurses how they feel about the docs they work for. If they work them too hard, if the docs are short tempered with them, if the patient load is very heavy.
Would they use these docs personally.
Who would they recommend?
Sometimes docs are afraid to give referrals, cause if it turns out bad - they don't want to be held responsible. But nurses like to brag about the good ones they work for.

Finding a good doc can be difficult.
I fired 4 docs in 5 years before I landed a good one on the 6th try.

My son has had a malaise for 6 years and has had as many docs in that amount of time. His last one, 4 months ago, placed him in the hospital for testing (the only one to do so) and they kept him for 9 days trying to get to the bottom of his weakness, sweats, chills, nausea, diarrhea, fever, etc.
They think they may have found out - Lymes.
His wife remembers a tick, 6 years ago when he was riding his bike, on a trail in the woods. Some of his tests came out negative, one or two... positive.
He finally found a doc willing to bother to do some detective work.

They're out there, ya just gotta dig to find 'em!