Dr Matsamura, The Pain Clinic, is excellent. He's on Redwood Rd at about 6300 South.
He wouldn't be primary care, though. Pain Management Specialist.
And he does the full range of pain management techniques as far as I can tell.
I've gotten opioid pills, patches, 3 different nerve blocks and was talking about one where he inserts a wire (implant) for pain relief. From the look of things, he has every type of gizmo, and the clinic does pain management only if I understood them correctly.
Dogs: Koshka & Chomp
Brain Zaps: Gabitril
Diabetes: Metformin, Insulin
Pain: Avinza, Morphine IR, Methadone, Cymbalta, Lyrica