Is it possible for debt collection agencies or lawyers come after me or levy my assets even if I do not see a record of any pending collections in my credit report?
Whether something does or doesn't appear on your credit report is completely irrelevant, and it's obviously "possible for debt collection agencies or lawyers [to] come after" you because that's exactly what you said is happening (or did happen last year). You indicated that you got this letter
last year, which means over six months ago. Has anything more recent occurred?
As far as levying on assets, that's only possible if someone has a non-expired judgment against you. Let me guess: this accident was the result of a third or fourth (or more) DUI?
If so, how can I check whether this debt is still alive & pending as their lawyers are claiming to be or it's long-gone & resolved because of the statute of limitation or something?
If a judgment was entered against you, then you can look at the court's case file.
I was out of the country for almost 20 years.
A person's absence from the state tolls the statute of limitations on any civil claim against him/her. I'm not sure if this applies to the enforcement of a judgment, but apparently someone paid enough attention to discover that you were back in the country after nearly two decades, so I'm guessing there's a lot of money at issue.
the lawyer who sent me a letter had a case number on the letter. Would this be enough to find the file about this case? then where should I go and what should I do to check whether the judgment is renewed or not?
Yes. The clerk's office of the court where the judgment was entered.
The case number and your name should be enough to locate the case.
Once you find the case online, you can either go to that court location to review it or have a copy of the case file sent to you. You can pay the fee by credit card. Any judgment renewals should be in the same file.
Not every court in California has online case access like this.
the accident incurred in La Crescenta, CA about 20 years ago. I just cannot seem to locate which court I have to go to find out about the current status of the case.
The first thing to do would be to input the case number
here. From doing that, you should be able to tell whether the judgment against you was renewed. Also, please post the two letters at the start of the case number (should be "_C"). From that, I can tell you the specific courthouse in Los Angeles County where your case was filed.