Depends on how large your insurance network is and how well served your region is. I've never had to wait longer than a month to see a specialist aside from non-critical checkups/exams. Granted I pay extra for the "broad network" option at my employer, I'm in a decently well-populated area in suburban Maryland so there's plenty of providers, and I did have to call around to multiple providers to find openings sometimes when I was a new patient.

Everything else wrong with US healthcare aside, I'm pretty sure we have better wait times on average.