What should I look for when choosing a certified stem cell hospital?

I have been looking into stem cell therapy while researching my parents' health management.

However, since there are so many hospitals, I've heard that it is important to check whether a hospital is certified for stem cell therapy.

So I have been searching for information on certified stem cell hospitals, but there isn't as much available as I expected.

I am wondering what specific certifications or licenses I should check when verifying a hospital's certification.

Please let me know if you have any tips on finding a good hospital or things to watch out for!