Have you guys already signed up for the PSLF program? I've completed one month of residency but haven't signed up yet - so I don't know if I can retroactively sign up stating that I started working on July 1. If so, I probably should sign up immediately. I haven't done much yet regarding school loans or even contacting my student loan servicers, since I'm just 2 months into the 6 month grace period, but this is something I probably should be getting on board with very soon. I just don't know if it makes a difference if I start taking action now, vs in another few months.
You don't have to "sign up" for it. The process works as follows:
You make 120 qualifying payments, then apply for loan forgiveness. A qualifying payment is any payment made under a qualifying payment plan* while employed full time in public service**.
*Basically, any payment plan, including IBR or ICR
**A governmental or 503c non-profit organization
For convenience, you can send in periodic employment certification forms (google "PSLF employment certification form"), which are basically affidavits that your employer signs saying "yes, I am a public service organization, and yes, this person was employed by me full time during this time period." Once the feds get this form, they pull your loan payment record and give you a report saying "you've made X number of qualifying payments for PSLF so far." They keep track of this for you as well. Why do this periodically? Presumably, when it comes time to apply for forgiveness, you won't have to track down 10 years worth of proof of payment, proof of employment, etc.
What matters most is that you start paying on some payment plan ASAP during residency. The longer you wait, the more 'cheap' qualifying payments you miss out on.
One last detail: At my residency, it was the GME office that filled out the employment certification form for me. I had them do one sometime in my second year, and they are doing another one now to document the remainder of my residency employment since I recently graduated.
Hope this helps.