At Optum, we help adults and children breathe easier and improve their overall health. With an office conveniently located in Merrick, NY, our allergists offer care for a wide range of issues including eczema, skin rashes, itchy eyes, hives, sinusitis and more. If you aren't sure what is causing your symptoms, our diagnostic testing can help poinpoint the problem. These tests include allergy skin/patch testing, asthma testing and environmental allergy testing. Optum accepts most major health plans.