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Welcome Dr. DeHart

Learn About Dr. DeHart

We are Honored to have the Best Patients In Arlington Heights

Meet Danny

We could not say it better ourselves.
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Education & Prevention is at the Heart of Our Practice


Sure, we are here to help replace a missing tooth, enhance your smile or get you out of pain – fast. However, this is not our primary goal. In fact, our philosophy is just the opposite. Our top priority is to be your advocate. We want to help you learn how to properly care for your teeth and gums so that dental problems are prevented. Whether you have major dental issues or a perfect smile, you can count on us to answer all your questions and to build a healthy dose of education into every visit.

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Family Friendly Dentistry Makes it Possible for Everyone to Smile


For nearly 50 years, Costello Dental has been proud to serve the Arlington Heights community. We are honored to be seeing the third generation of families first treated by Dr. John when he opened his practice in the Randhurst Mall. From coaching Little League to visiting schools with free, educational programs, we go above and beyond to help our friends and neighbors smile. Our patients routinely comment that they have never been treated better – anywhere – and Dr. Ernie looks forward to carrying-on the family tradition of exceptional dental care for the next 50 years in Arlington Heights.

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Affordable & Convenient Dental Care - Always with a Personal Touch


As with everything we do, Costello Dental makes getting and paying for the highest quality dentistry simple and predictable. If dental insurance is influencing your decisions, we will work with you and your plan to maximize your benefits. If you do not have dental insurance, our in-house dental program makes exceptional dentistry affordable for everyone. Regardless of your situation, our team – led by Liz– takes the time to help you understand all aspects of your care and to ensure financial concerns do not stand between you and the smile of your dreams.

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