I did. I had one as a Sole Proprietor gig, but when I changed over to an LLC with an S Corp tax structure, I had to get a new EIN.
EIN is a social security number for business. As my business was set up previously, it had an EIN. But that business was "closed" and became a new entity as an LLC. Just like when a person dies their SSN goes away. When a new person is born, they get a unique SSN. Business is exactly the same way. The old business "died" and my LLC was "born". Hence it needed its own EIN.