@mphaddican - is WM the abbreviation for Waldenström Macroglobulinemia (WM)? Here's some information from Mayo Clinic on the different specialists.

"At Mayo Clinic, a team of experts in a variety of areas provides comprehensive care to those with Waldenstrom macroglobulinemia. Your care team may include hematologists, pathologists, radiologists, nephrologists and neurologists. Other experts are included as needed."
-- Waldenstrom macroglobulinemia care at Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/waldenstrom-macroglobulinemia/care-at-mayo-clinic/mac-20360009