Depends on how you're counting them.

Some "polls" ask if you were uninsured for so much as a DAY in the previous year (I got asked by one of those polls). Now, if you're changing jobs, you're almost guaranteed to be uncovered for a day and that poll would 'tag' you.

Other polls are more strict - as in are you uncovered RIGHT NOW.

I've been uninsured for MANY brief periods - the latest coming from my divorce being finalized before taking my current job. I was uninsured for a few weeks between the time I was covered under my now-ex-wife's health insurance (used to be she was covered under mine but when I had to go to contract work and she was at the Post Office, that changed) and the time that my current employer picked me up.