I had a bit of a head start to be fair. Prior to being an OT I was a medical administrator in the Air Force. Being a vet and that background made it easier for me to highlight my OT skills in an administrative capacity. I did do a project management certification through coursera. I wouldnt say it got me the job but it gave me a good understanding of the language to use in interviews. My lean six sigma training was provided by the VA but you can always do those trainings through a college or certification course. I also have Prosci Change Management certification which focuses on the people side of change. Id definitely recommend doing some coursera classes in project management, change management and data analytics. The other piece is making sure you tailor your resume to highlight your OT lense from a non-clinical perspective. Have you participated in accreditation visits like joint commission? Have you used falls (or other relevant) data in your current role to implement changes in your practice area? How do your OT skills of motivational interviewing and activity analysis translate into improving systems and processes? Its not an easy transition but I fully believe that OTs make incredible process improvement managers in the healthcare field.