Greetings. So sorry you are having trouble finding a clinical home. I don’t know Scottsdale but I am in Little Rock and had similar trouble getting initial assessment by a hematologist/oncologist. My PCP is at the med school here and is competent. She made a referral to the USMS (med school) Multiple Myeloma Institute. I waited and waited. No callback. She called. No callback. PCPs know alittle or nothing about MGUS I am finding. You really need a hematologist/oncologist.
My anxiety was high. I consulted with Dr Google which is always a bad idea and became more anxious. It was making me actually feel sick.
I asked around and referred myself to another Cancer treatment facility. They appointed me and I was in to see a very competent hem/onc doc within two weeks.
MGUS is a watch and wait disease. You will likely have blood drawn, a 24 hour urinalysis and perhaps a bone biopsy to confirm the MGUS. Your doc may order CT scans to make sure you have no bone anomalies. Then quarterly or every 6 months, you will have blood draws to see if your disease is progressing. The data is on your side. Most MGUS does not progressed to multiple myeloma. Yay!
If my numbers go up into a range where treatment would be considered then I would make an appointment at Mayo or MD Anderson. Neither is close for me but I would want a second opinion.
If your local cancer treatment centers are saying that they don’t have capacity to serve you, that is very sad indeed. You do have Mayo Clinic in Phoenix.
I don’t know if anybody on this board is from your area, but there is a MGUS Facebook group which has a gazillion members. There may be somebody in that group that receives services in your area that can give you some guidance about local physicians.
I know nothing about your additional diagnosis. But I bet you there are people who do…

Best wishes. Let us know what happens.
Patty