Barton has suffered a frustrating spell on the sidelines since fracturing a metatarsal within weeks of his £5.8million arrival from Manchester City this summer.
He will play again in a behind-closed-doors friendly tomorrow having set his sights on Tottenham's Premier League visit to St James' Park on October 22.
He told the Evening Chronicle: "England is on the back-burner for me, without a shadow of a doubt.
"I haven't been bought to play for England - I am here to play for Newcastle United.
"People get carried away about playing for their country. It is always nice to be selected, and it is always a privilege and an honour.
"But the thing I have to do first and foremost is to do what I have been bought to do, and that is play good football for Newcastle.
"If England comes, then so be it, but I have played for them once now and that will do for me. I am more interested in winning domestic honours.
"This is my bread and butter and at the minute, hand on heart, I would much rather be successful for Newcastle United than I would for England."