I'm very happy you were able to get help and get sober. However, I disagree with two of your statements, one in a good way, and one in a bad way.
First, is this:
I am now 30 years old and have nothing to show for all the work I have done in college, medical school and residency except a big pile of debt.
This is not true. Sure, you're no longer in a residency program. But as already mentioned you might be able to take your prior training, get a license, and do something medical. And you certainly might get back into a residency program.
Second:
If you are struggling from addiction, quitting is easier than you may initially think.
This is simply not true. Quitting is hard. It's this hard:
nearly dying from delirium tremens, losing my home, having my parents and other family disown me, having to declare bankruptcy due to my insurmountable medical school/undergraduate debts, and attempting suicide
Moving forward:
As I mentioned earlier in the thread, sober you will find that you're a different person. You may, or may not, want to be a physician. And, being a physician might be a bad idea for your health. Or it might be fine. You'll need to explore this.
You've been sober for a few months now. This may seem like a long time to you, but it's a very short time for us. Few programs will consider you unless you have sustained sobriety -- at least 6 months, but more likely at least 1-2 years. So you need to look at this using a long, slow timeline. What you need to do is get back into some sort of medical work -- ideally clinical. Might be a scribe somewhere. Or volunteer in a clinic. Etc.
Then you'll need a job to help pay the bills. As mentioned, you could try to get a license with your past training and ongoing alcohol monitoring -- it's possible that would help you get clinical experience. This will depend upon the state -- some are notoriously more hard to get a license in. You could work doing insurance reviews / prior auths / chart reviews. There are options, you'll need to hunt for them. Plan for many people to turn you down -- you need to take each rejection, use it as fuel for the next application.
Or, you need to walk away from medicine and find a new plan. This isn't failure, it's success of a different flavor. The long hours and stress of medicine might make it more difficult to maintain your sobriety, easier to slip up. You're smart, you can do something else also.
It's scary. Prior to all of this, your life/career was on a straight track. Now you've jumped the rails, and the direction forward isn't so clear. But you can move forward, you need to choose a direction, make a plan, and take it one step at a time.