Yep. You can Google-search by image, and it looks like those paintings are by Biljana Djurdjevic, a Serbian artist who started her career in 2003 (after getting a Masters in Fine Arts in 1997).

Here's a story about Tony Podesta's art collection:

When they buy, Tony and Heather buy big. At a given moment, their collection hovers around 900 pieces, higher if a major art fair closed recently. The emphasis is on photo-based works, though sculpture and paintings are also featured.

With more than half their trove currently in storage, Tony and Heather, like notable collectors Eli and Edythe Broad in Los Angeles and Don and Mera Rubell in Miami, are considering buying a public space to show their works. In the meantime, the couple sends as many pieces as possible to traveling museum shows and displays the rest at home. In their Woodley Park and Falls Church residences, pictures hang salon style, floor to ceiling, like very, very expensive wallpaper. Tony started buying art at the annual auctions of Washington Project for the Arts -- a local alternative art venue that was once a very hip place but is hardly on par with today's major galleries. Today, though his habit has grown voluminously, Tony describes the evolution as more a dedicated hobby than an obsession.

"Some people spend a lot of money on golf," says Tony, who speaks in energetic spurts. "Like they play golf, I play art."