As long as you have the DNS data, yeah, you should be able to do so, unless DH is also your domain registrar.
If your registrar shows "DreamHost, LLC" this would be the case.
edit: oh, that is probably also under DDoS, whoops
In some cases I pipe it through Digital Ocean, because it's nice to have everything in one place, but I've wondered if that might have some performance impact. Can anyone confirm/deny this? So, domain registrar -> Digital Ocean -> hosting.