In terms of waiting times to see a doctor or specialist (the only cases where stats for the US seem to be available), the US looks a touch better than average in waiting times for healthcare within comparable countries: https://www.oecd.org/en/publications/health-at-a-glance-2025....

Ahead of Canada, sure (they come worst here in both scenarios) but behind countries like the UK, Germany & the Netherlands that do have universal health care.