Hematologist-Oncologist · Colorado
Complex medical science,
explained clearly.
I'm Dr. Kelly Casteel — a hematologist-oncologist who helps patients and clinicians understand blood disorders and cancer medicine, accurately and humanely.
Interactive explainers
The science of blood, made visual.
Interactive timelines tracing how treatment actually evolved — each built from primary literature, ClinicalTrials.gov, and FDA records. Browse all explainers →
Four Decades of Myeloma Therapy
From melphalan to CAR-T — the trials that turned a two-year prognosis into a livable disease.
Open the timeline CLL / SLLFour Decades of CLL/SLL Therapy
The shift from chemotherapy to targeted, chemo-free care, mapped trial by trial.
Open the landscape AnticoagulationThe Anticoagulation Arc
From heparin to the Factor XI inhibitors — a century of thinning blood, safely.
Open the timelineWho I write for
Two audiences, one standard of clarity.
♥ Patients & families
A new diagnosis comes with a frightening vocabulary. I translate it — plain language first, honest about what we know and what we don't, never hype. Understanding your disease is the first step to facing it.
✦ Clinicians & trainees
The same explainers, with the receipts. Sourced to primary trials and regulatory records, built to be a fast, rigorous refresher on how today's standards of care came to be.
A focused practice
The Iron Doctor
Colorado's home for iron disorders — iron deficiency, iron overload, and the anemia workups that get missed. Clear answers and specialist care, in Longmont and by telemedicine.
Visit The Iron Doctor