Thanks for your interesting question. First of all, chiropractors are not physicians, they are chiropractors. Secondly, whether they are able to inject or not is irrelevant. When choosing your injector you should look for a physician who studied cosmetic medicine in their their residency, i.e. it should be core training. This would include dermatologists and plastic surgeons.
Thank you for your question. As always, I recommend that you get treated by a well-trained and experienced dermatologist or plastic surgeon. Best, Dr. Frucht.