There is no proof to support claims that Providian was not part of WMB.
Read this SEC document (and others if you so choose) related to the Providian acquisition and subsequent merger into WMB.
" The respective Boards of Directors of each of Washington Mutual and Providian have determined that it is in the best interests of their respective companies and stockholders to consummate the business combination transactions provided for herein pursuant to which Providian will merge with and into Washington Mutual (the “Merger”) and immediately thereafter Providian National Bank (“PNB”) will merge (the “Subsidiary Merger”) with and into Washington Mutual Bank, FA (“WMB”). "
“Description of Institution Providian National Bank is a Competitive Equality Banking Act (CEBA) limited purpose bank specializing in credit card lending and deposit products. The main office of PNB is located in Tilton, New Hampshire, with a single branch office located in Belmont, New Hampshire. PNB offers proprietary credit card products nationwide under the Visa and MasterCard brands and in collaboration with third-party affinity partners. PNB’s credit card loans are sourced primarily through direct mail solicitations. As of September 30, 2004, bank assets totaled $13.1 billion. Charter Number: 1333 2 PNB employs approximately 3,460 individuals with major employment centers for PNB’s credit card activities in San Francisco and Pleasanton, California, and Arlington, Austin, El Paso and San Antonio, Texas.”
Providian's credit card business was part of PNB, which was merged into WMB, which is now owned by JPM.
Also, if you dig a little deeper, you should find additional proof that the card services were part of PNB, which was merged into WMB, which is now completely owned by JPM.
Type in www.providian.com into your internet browser and see what happens.