Is it okay to switch to a different orthodontist for phase II treatment?

My daughter has completed phase I of braces. She had a bad overcrowding problem and some very crocked teeth. We are now looking at phase II (overbite). She has no braces or retainer in her mouth. I do like her orthodontist, but don't really care for the staff. The staff is mainly who I deal with and I really don't wish to spend more money there. Can we start fresh with another office? I didn't know if this is a big deal to switch or not. We can stay if it is best for my daughter. Thank you!!!