It seems that the Pennsylvania Republican Senate primary field is growing. Well-known celebrity physician Mehmet Oz is expected to declare his candidacy to fill the seat left by retiring Sen. Pat Toomey.

Fox News reports:

The announcement by the 61-year old Oz – a cardiac surgeon, author and host of TV’s “Dr. Oz Show” – is widely expected Tuesday afternoon as he’s already been assembling a campaign staff in the 2022 race to succeed retiring GOP Sen. Pat Toomey.

Oz will sit down for his first national interview as a Senate candidate on Tuesday evening on Fox News’ “Hannity.” Host Sean Hannity teased Oz’s appearance at the end of his Monday night program, saying that he had a “huge announcement” and hinted “think midterm election.”

Oz enters the GOP Senate primary with sizable name recognition – thanks to his long-running TV show. Oz grabbed national attention more than a decade ago when Oprah Winfrey introduced him to her program’s massive audience. He would also be able to self-fund his Senate bid by dipping into his estimated net worth of roughly $100 million.

The candidate had lived for years in New Jersey, but Oz registered to vote as a Republican last December in Pennsylvania’s Montgomery County, using the home of his wife’s parents in the affluent Philadelphia suburb of Bryn Athyn as his residence. According to election records, he’s voted twice by absentee ballot in Pennsylvania this year. Oz previously lived in the Keystone State decades ago, as he graduated from the University of Pennsylvania’s medical school and Wharton business school in 1986.

Dr. Oz’s expected announcement comes after widely considered GOP front runner Sean Parnell suspended his Senate campaign after losing custody of his children.