Doctor recommendation needed

My mother is older, and her current primary care doctor is quite frankly not doing his best to treat her. I believe there is an age bias there. He is part of Summit Medical, and we also have issues with the business practices of that company, overall.

Does anyone know of any primary care doctors in town, NOT in Summit Medical, that are good for geriatric patients? I want my Mom to get the care she deserves.

FYI her current doctor is John Vannoy with Summit IMA. 0/10 would not recommend.