When you say duplicate accounts, do you mean accounts reported by more than one CA or accounts reported by an OC and a CA? The OC and one CA can report the same account, that is not a duplicate account.
I would not start by disputing anything, IMO save disputing as a last resort.
You need to know the most important information first, the DOFD for each account, the DOLA(usually date of last payment), and your state's SOL.
If you haven't already, I would get your free annual reports, as these reports come directly from the CRA and provide much more information that reports you'll get elsewhere, like on myFICO or TrueCredit.
Check out the links in my signature, very helpful information there.
For medical debts, you want to follow the HIPAA process. You can read about that by click on the link titled "medical collections" below.
For any account with a CA, you always want to DV before PFD'ing.....but you never want to DV before knowing the above information.
For questions on specific accounts list back the specifics of the account
1) Original Creditor
2)Who is reporting-- the OC or a CA
3) Name of CA
4) Is the OC reporting a balance
5) DOFD
6) DOLA
7) SOL for your state
8) Can you PIF
If you provide those 8 things for specific accounts in question, we can advise you better on how to proceed.
