Larry, even though he was let go from his job, if he had health insurance through his company, in almost every instance,he should have been offered COBRA which is the right to continue one's health insurance for up to 18 months by paying the full cost of the coverage (most employers pay a large portion of the cost for active employees). While the cost of the unsubsidized premium may be too much for him long term, if his health plan had mental health benefits which most do these days, he might consider just keeping it for a month or two so he can utilize those benefits to get him through this rough patch and then drop the coverage which you can do at the end of any full month.
Also, if he was on good terms with his employer and his employer had an EAP (Employee Assistance Program) which typically provides access to trained counselors, he might ask if his employer might be willing to allow him to continue to access the program for a few additional months. Some employers might be willing to do that for a good employee who had to be let go for budget and business reasons, rather than for poor performance or misconduct.
Good luck.