Luis,
This isn't for everyone but it was for me. I simply went with a practice management program that you can pay for monthly. They provide the clearinghouse, the software, the support, the ability to eligibility checking, electronic remittance advice, everything.
So we started with the software and spent a week learning it. It's $199/month with everything included. That's essentially what I spend on billing every month. There is actually cheaper ones than that. We take the superbills after every day and enter the info (ICD-9 and CPT) and off it goes into some magical land. It returns with an EOB (Explanation of Benefits) and a check.
It was extremely intimidating at first because everyone had always sent it to billers because it was supposedly so difficult. Well, it's not. Not at all. And I know where every claim is, I know it got worked up, sent, paid, not paid, whatever.
You may want to wait for AC's PM system and start with it. You can start slow and only do, say, Medicare claims. Then progress from there until you get the hang of it.