Hi there! That's a great question. You can use this website to locate one near you: https://www.marijuanadoctors.com/medical-marijuana-doctors/oh/
In addition, if you have any questions about registering or any part of the process for OH, check out your government's website. Their FAQ has a lot of information. https://www.medicalmarijuana.ohio.gov/patients-caregivers
Hope that helps!