No, but I do work with people who call themselves hoarders, or with families needing to clear up the estate of a hoarder.
I work best with people who are ready to let go, who are at the stage where their ‘stuff’ is no longer as important as the freedom that comes with living with less. Most hoarders are not ready to let go, or don’t want to, for many complex reasons.
If you are wondering whether you are a hoarder, or if a family member or friend is a hoarder, there are some excellent resources online which include a hoarding scale by ICD (Institute for Challenging Disorganization)
There is also a clutter rating image scale at http://hoarding.iocdf.org/cir.pdf