After searching on the internet I found the following information
CPC = Central Portfolio Control
License # 20170007 which is cuurently valid
6640 Shady Oak Road
Suite 300
Eden Prairie, MN 55344
952-944-5440
952-944-1620

Here is a list of all debt collectors registered at the company, many of whom have expired licenses and several of the collectors also have aliases which must be registered with the state:

Full Name License Number License Type
ALI , MONA  20621782  Debt Collector  
ANDERSON , RENISHI  20609455  Debt Collector  
BARRETT , ROBERT  3008747  Debt Collector  
BENAMARA , STEPHANIE  20488250  Debt Collector  
BRUEGGEMAN , JANIE  20347537  Debt Collector  
BURTNESS , DAVID  20434453  Debt Collector  
CABAN , DAVID  20612959  Debt Collector  
CAMPBELL , CHRISTOPHER  20210733  Debt Collector  
CHASE , WILLIAM  20272548  Debt Collector  
CLEMENTS , ALICIA  20494387  Debt Collector
DANIELS , BRITTANY  20622933  Debt Collector  
DAUWALTER , CHANDA  20622935  Debt Collector  
DAVIS , AUBIN  3009278  Debt Collector  
FAHEY , ERIN  20583341  Debt Collector  
FEALY , CHRISTOPHER  20602395  Debt Collector  
FRANKLIN , KATRINA  20624992  Debt Collector  
GARAY , ALVARO  20621281  Debt Collector  
GILLUM , JULIUS  20622939  Debt Collector  
GILLUM , LEROY  20625645  Debt Collector  
GRINDELAND , JAMIE  20367247  Debt Collector  
KEALY , JAMES  20496967  Debt Collector  
LEE , JOSEPH  20613113  Debt Collector  
LESHER , MICHAEL  20490910  Debt Collector  
LIEN , ANDREW  20581642  Debt Collector  
LIU , KAWEI  20299863  Debt Collector  
LOPEZ , EMMANUEL  20624993  Debt Collector  
MACHADO , JOSE  20623201  Debt Collector  
MARKLE , JONATHAN  20117896  Debt Collector  
MILLER , JAY  20617550  Debt Collector  
NOBLE , JADE  20374702  Debt Collector
PATTEN , BRIAN  20602209  Debt Collector  
PLETSCH , WILLIAM  20603543  Debt Collector  
RAYMOND , ERIK  20622834  Debt Collector  
REITER , COLLEEN  20322384  Debt Collector  
REITER , ROBERT  20173680  Debt Collector  
REYNOLDS , DANIELLE  20616839  Debt Collector  
RICHARDS , NANCY  20618659  Debt Collector  
ROGERS , BLAKE  20590148  Debt Collector  
ROSAS , EVA  20613882  Debt Collector  
ROUTS , DANIEL  20587729  Debt Collector  
RUSS , JANNETTE  20616822  Debt Collector  
RUSS , SHANNON  20616803  Debt Collector  
SANTUR , HUSSEIN  20614122  Debt Collector  
SANTUR , RAHMO  20622941  Debt Collector  
SCHNEIDER , JULIE  20621689  Debt Collector  
SLUPE , ALAN  20603551  Debt Collector  
SPLITTSTOESSER , ERIK  20599247  Debt Collector  
STEPHANI , THOMAS  40032967  Debt Collector  
STOEGER , MICHEAL  20517346  Debt Collector  
STOEGER , MICHEAL  20517346  Debt Collector  
THERE ARE SEVERAL MORE COLLECTORS LISTED
This individual or company has at one time had formal administrative action taken against one or more Commerce-issued license(s). For further information please contact Commerce Investigation Unit at 651-296-2488 or 1-800-857-3602 (phone hours 8:00 AM to 4:30 PM CST).

Please, if these people are calling you, whether or not the debt is yours, report them to the above number.  This company is evil.

Calling to find out details on a charge on my account and from what company it is being charged for. I got CPC's number from my bank and was put through to a woman who called herself "Ellie", she is a piece of work all right, after a few attempt to find out why i had recieved the charge and why I was been spoken to in such a poor manner i was told that she was not customer service and she put down the phone. I phoned back to speak to her manager and answered the phone with "WHAT" and she in the same rude manner told me she was the manager and she proceeded to put the phone down on me again. I phone the switch board and ask to speak to Mark the boss, and left him a message but have yet to hear back from him...