Dr. Daniel Hamilos

Daniel Hamilos, MD, provides allergy care at MercyOne North Iowa Allergy and Immunology in Mason City. He understands how nasal allergies and frequent sinus infections can make someone feel miserable. “It makes me happy when you finally get relief,” Daniel said. Daniel grew up in Illinois and attended medical school at Northwestern University in Chicago. He is certified by the American Board of Allergy and Immunology. At MercyOne, Daniel treats many allergy-related conditions like asthma, eczema and food allergies. He can also diagnose and treat immune system disorders, which is how your body defends against infections.Outside the clinic, Daniel walks, bikes and plays baseball or softball to stay in good health. He and his wife attend church and enjoy visiting family.

Dr. Hamilos is highly rated in 8 conditions, according to our data. His clinical expertise encompasses Sinusitis, X-Linked Agammaglobulinemia, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), and Nasal Polyps.

Dr. Hamilos is board certified in Internal Medicine, American Board Of Internal Medicine. He is actively involved in clinical research, co-authoring 37 peer reviewed articles. Dr. Hamilos is currently accepting new patients.