Welcome @kc0myx - I would be extremely cautious about any stem cell treatment for neuropathy. There has been a lot of research done in this area but as far as I've read there has been no evidence of successful treatments of neuropathy patients. The FDA has warned about these clinics and I also found an interesting article on the topic that lays out the facts.

-- FDA Warns About Stem Cell Therapies:
https://www.fda.gov/consumers/consumer-updates/fda-warns-about-stem-cell-therapies
-- Fact-check of stem cell therapy for pain & neuropathy:
https://ipscell.com/2021/05/fact-check-of-stem-cell-therapy-for-pain-neuropathy/
Not to say it doesn't hold promise for the future. There just needs to be a lot more testing done to prove it's safe and effective which hopefully would get it covered by insurance. Here are a couple of articles on the topic.
— ‘Amazing’ New Stem Cell Treatment for Neuropathy (July 2015)
https://www.painnewsnetwork.org/stories/2015/7/12/amazing-stem-cell-treatment-for-neuropathy
— National Institutes of Health – Mesenchymal stem cells to treat diabetic neuropathy: a long and strenuous way from bench to the clinic
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4979500/
I'm happy to hear you have had some pain relief with the treatment. Do you mind sharing a little more about your neuropathy diagnosis?