Or, maybe you know him because Oprah likes him.

He’s a health expert on her show (viaOprah).

If, on the other hand, you watchDr.

Dr. Oz

And now, you’re able to gossip over the doctor in another context.

According toThe Real Deal, Mehmet Oz’s own sister, Nazlim Oz, is suing him.

After Mustafa Oz’s death, both properties entered into Turkish probate.

Dr. Mehmet Oz

(Yes, their family is originally from Turkey, and Nazlim lives in Instanbul.)

Dr. Mehmet Oz happens to helm the limited liability company which currently controls the properties.

Dr. Oz vehemently disputes his sister’s claims

Dr. Oz is having none of it.

Via a spokesperson, the television personality toldThe Daily Mailthat he didn’t have a choice.