Columbia University Irving Medical Center has removed Dr. Oz from its website.

The Daily Beast reported that Columbia removed personal pages for Oz, noting that he had held top positions at the Ivy League school, such as Vice Chair of Surgery and Director of Integrated Medicine. He is listed in the surgery faculty directory.

The university received criticism for years from physicians who accused Oz of promoting quack treatments and cures in the interest of personal financial gain.

Columbia and Oz did not immediately respond to Insider's request for comment on Saturday.

In January, HuffPost reported that Columbia had changed Oz's title to "professor emeritus of surgery." The university later told the outlet that Oz became a professor and special lecturer.

Concerns about the legitimacy of Oz's medical advice have been amplified amid his Senate run. Less than half of Oz's medical recommendations were supported by evidence.

In December, Oz accused the Philadelphia Inquirer of trying to cancel him by referring to him by his given name, Mehmet Oz, instead of his celebrity name.

Even though I'm a practicing physician, the Inquirer just announced no more doctor. I have taken care of patients. Oz said in a December campaign video that he has done thousands of heart surgeries. I will not be canceled.