I need help understanding a non compete clause

I have a question about a non compete clause in an employment contract. I don't understand if they are saying that I cannot work within a 50 mile radius of the clinic where I personally delivered services for a 2 year period or within a 50 mile radius of ANY clinic the company operates in the country regardless if I have ever served there or not. The language in the contract confuses me. It says: Clinician will not, other than within the scope of clinicians employment with the company, engage in any business at any location within a 50 mile radius of anything so the operated, managed or staffed by the company at which clinician performed services during clinician's employment with the company. They have offices all OVER the country so if it is truly a 50 mile radius of ANY of their facilities, I'd never be able to find another job for 2 full years. If it is a 50 mile radius of the actual clinic sites I worked at, that makes sense.