Not really. I did a quick job search and while I did see a handful of job offers that listed "
Certified Occupational Therapy Assistant - Program Manager". However, those jobs usually listed COTA as a minimum requirement and went on to state that OT's, PTA's, and PT's were eligible to apply to the position as well. With all that competition, I wouldn't think chances are high. Doesn't seem super common, but who knows?
What kind of experience are we talking? If you have a bachelor's/master's in health administration from a previous career and a COTA, I could see that being competitive.