You are correct of course that every doctor has their own way of practising. Just because a new physician may be from the same group as your own physician does not in any way mean they do or have to practice the same way. It would not be reasonable to expect a new physician to stop practising the way he thinks is correct, just because a prior physician did something differently.
The new physician may disagree with how the old physician was practising, and even though you felt it was "successful". This may be because the new doctor either thinks safer and more appropriate treatments are available, or he disagree with the long term safety of the old regimen. Regardless, if he is the one who is writing the prescription and will be responsible for your care, it will be his decision on what he writes.
Your options are simple- either trust the new doctor and his judgment, give his recommendations a try until they are re-evaluated as far as if they work or not, or need to be modified or not; or try to find a different doctor.
Hi Dr (The Germ Doctor),
I just wanted to say I had to stop and think about your answer and since I have done that, I wanted to say thanks again because you gave me a thughtful, concise and articulate answer that really helped me. Keep up the good work and thanks again,
I'm glad this helps.
Good luck to you.