It's certainly understandable that you would not want to retake courses. However, most PhD programs are going to be approximately 60 credits beyond the Masters so there's no real "repeating" involved. As for credits from your Master's is concerned, for the most part, the entire Masters should transfer but that still leaves the 60 credits ahead of you. We sometimes hear from people who have started one PhD program and have elected to switch to another and they wonder how many of their doctoral level credits will transfer. The answer to that varied a bit from school to school but generally falls in th 6-9 range.