A 78-yeаr-оld pаtient with rheumаtоid arthritis, chrоnic kidney disease, and long-term NSAID use reports progressive fatigue, exertional dyspnea, difficulty concentrating, and two recent falls. Hemoglobin is 8.7 g/dL (normal 12–16 g/dL), MCV 87 fL (normal 80–100 fL), reticulocyte count is decreased, serum iron is decreased, total iron-binding capacity is decreased, and inflammatory markers are elevated. Stool testing reveals trace occult blood. The NP bases the plan of care on