Doctors have lost ratings. One doctor I follow had 4.4 stars. Pretty high. In the new system he has 3 stars and is rated #5 out of 8 doctors in his city. Meanwhile another doctor on that list is on there 3 times. He is rated #1, although he had just over 2 stars in the old system.
Another problem, no addresses, phone numbers and websites. I have worked with the previous owner to make sure my doctors had the correct information. Now that information is gone.