He can call AA and ask for assistance.
He can call rehabs seeking information.
He can meet his doctor and be honest about his drinking.
Friend, he is the one that needs to make the contacts. This is HIS addiction.
The best way to help an active alcoholic is to step aside. Let them find their way. If we do all the work for them, then they will blame us for forcing them into recovery or blame us for controlling when they fail.
Do nothing? no. Assist him by looking up the numbers, if you wish. Let him decide when and if he will make the calls.
Remember the three C's of alcoholism:
You did not cause this
You can not control this
You will not cure this
If your alcoholic becomes stressed with anxiety or has an emergency situation from withdrawals or any other alcohol related effects, do not hesitate to call 911.