Kelly Casteel, MD is a hematologist-oncologist offering focused evaluation and management of iron deficiency without anemia, iron deficiency anemia, and iron overload including hereditary hemochromatosis. Dr. Casteel offers in-person visits in our clinic in Longmont and also virtual visits.
Iron problems often go under-recognized or under-treated because the results don't fit a simple pattern. This practice is built around the complexity — not despite it.
Ferritin depletion can cause real symptoms before the hemoglobin drops. If you have unexplained fatigue, hair loss, restless legs, pica, or exercise intolerance and iron has been flagged, a specialist evaluation can clarify whether treatment is indicated.
When oral iron is not working or is not tolerated, when symptoms are significant, or when the underlying cause of depletion needs clarification, a focused consultation can develop a clearer plan — including IV iron infusion when appropriate.
Elevated ferritin is not always iron overload — but when it is, it matters. This practice evaluates ferritin and transferrin saturation in context, works through genetic findings, and establishes a practical phlebotomy schedule when treatment is indicated.
Whether you are a primary care provider, gastroenterologist, gynecologist, or surgeon who needs a specialist to take the iron question off your plate, this practice is designed to receive that handoff cleanly.
Yes. Many patients experience significant symptoms from iron depletion before hemoglobin falls below normal. The clinical relevance depends on the full picture — symptoms, ferritin level, rate of change, and other factors. A specialist evaluation can determine whether treatment is warranted.
IV iron is often considered when oral iron causes significant GI side effects, when the underlying cause of depletion is ongoing blood loss or malabsorption, when the anemia needs to correct more quickly, or when oral therapy has been tried and failed.
Not necessarily. Ferritin is also an acute-phase reactant and rises with inflammation, liver disease, and metabolic conditions. True iron overload is defined by elevated transferrin saturation alongside elevated ferritin, often confirmed with genetic testing. Context is everything.
Hereditary hemochromatosis is a genetic condition that leads to excess iron absorption over time. When identified early and managed with therapeutic phlebotomy, outcomes are generally excellent. The degree of iron loading, associated organ risk, and mutation type all inform how actively it should be treated.
In most cases, yes. Visits for evaluation and management of iron deficiency anemia and iron overload are covered under standard medical insurance. IV iron infusion coverage varies by plan and indication. The office can assist with prior authorization when needed.
Many insurance plans do not require a referral, but some do. Check your plan to be sure. You are also welcome to reach out directly using the scheduling form below and the office will help clarify what is needed for your situation.
Dr. Kelly Casteel is board certified in hematology and medical oncology. She completed her fellowship training at MD Anderson Cancer Center, after which she served on faculty there. While at MD Anderson, she was recognized as a leader in training future oncologists and achieved patient satisfaction scores in the top 1% nationally.
Dr. Casteel has a special clinical interest in blood diseases including iron deficiency, anemia, hemochromatosis, blood clotting disorders, and platelet disorders. She maintains close relationships with local and national experts and brings that network to her patients in Longmont through Rocky Mountain Cancer Centers.
"Communication is key in medicine. From the moment I first meet a patient, I strive to communicate clearly and as often as needed to ensure that the patient, their family members, and the other members of their medical team understand the diagnosis, prognosis, and treatment plan."
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