About 15 years ago Taiwan officials went around the world learning about other countries’ health care systems so they could create one almost from scratch. They decided on universal coverage, but gave its citizens unfettered access to any doctor they wanted to see.
Fortunately for the Taiwanese they continued to examine their system after they built it. They found that ambulatory patients of primary care physicians rated their care experiences as superior to patients of ologists on several measures of care including comprehensiveness of services. I don’t know why they didn’t realize this in their early investigations. Oh well, better late than never.