Who was the Doctor who operated on Julie Andrews that ruined her singing career?

There is a misunderstanding here. Julie Andrews did not have surgery that ruined her singing career. She had surgery in 1997 on her vocal cords due to a polyp, but it was not a factor in the end of her singing career.

Here's what happened:

* The surgery itself was successful: The polyp was removed, and Andrews recovered well.

* The surgery did not permanently damage her voice: She continued to sing after the surgery, even starring in Broadway productions like "Victor/Victoria" and "My Fair Lady."

* Her singing career wasn't ruined: Andrews chose to step back from extensive singing in later years, but this was more due to her age and a desire to explore other artistic avenues (acting, writing, etc.).

The rumor that the surgery ruined her career is a myth. It's important to be respectful and accurate in discussing people's health and careers.