I would think you might be well served by contacting the clinic which did well by your husband.
I would imagine they would be more than happy to provide you with references which you will find
If they are not able to help, I would suggest you may wish to try wamm.org, or normal, or the very nice women behind Blue otter school of herbal medicine.
815 Almar Ave. #2 Santa Cruz, CA. 95060 Office Hours
Tuesday – Friday: 10:30 a.m. to 6:00 p.m.
Saturday: 11:00 a.m. to 5:00 p.m.
Blue Otter: https://www.blueotterschool.com/bios-consultations/