Other websites tie this number to 201-373-8371
and that has been identified to scam-artists in Costa Rica.
It has also been identified as HSBC Mortgage, "Lender's Mortgage Associates", and a "known telemarketer".
The most complete entries identify this as a criminal ID-theft ring, asking for SSN and more PII for an offer that is supposedly pre-approved.
The reference up-comment-list to http://www.dfi.wa.gov/consumers/alerts/united.htm
looks QUITE likely.
Someone linked it (via e-Mail spam) to 1-800-968-1875
which also matches it to that "United Lending" scam.
Somebody identified it as "National Lending Corporation" "mynlc.com" is registered to a private individual, at Rackspace/Houston. Or, mynlc.biz "Hao Nguyen"
Also, see "Ripoff Report" entry http://www.ripoffreport.com/searchresults.asp?searchtype=0&submit2=Search%21&q5=National+Lending+Corporation&Search=Search
Whoever it is, if you gave them YOUR information, it's time to watch all your accounts, and put a "watch" on your credit report. There is no reason to believe that the Caller-ID number (202) 664-1270 even originates in the US.
Note that the website www.generic-rxdrugs.com is itself a scam. The website is in Germany, and the domain registration has been removed (but not discontinued) by the registrar, in Austria.