Here are the links for the galleries I found:

Martos Gallery: founded recently in June 2007 by Jose Martos. Internationally renowned artists, challenging contemporary art, six artists
http://www.martosgallery.com/artists/pawel-wojtasik/

Claire Oliver: challenging the public, art education, working with museums and not for profit institutions, do not sell art, exposing European artists in the United States
http://www.claireoliver.com/artists.html?artist_no=32
http://www.claireoliver.com/artists.html?artist_no=10

Gladstone Gallery: no statement, international artists, some emphasis on film
http://www.gladstonegallery.com/opie.asp?id=403
http://www.regenprojects.com/exhibitions/2008_4_catherine-opie/

envoy: exhibitions, talks, screenings, performances, etc promotion of contemporary visual practice
http://www.envoygallery.com/artists_pages/wallace.html
http://www.envoygallery.com/artists_pages/neal.html

Raandesk Gallery:online aspect is important, opening art world to a wider audience
appealing to novice, FAQ, etc.
http://raandeskgallery.com/artist.php?artistId=7