Welcome to O'Niel Family Dentistry! What started as Dr. Philip O'Niel's practice is now carried on by his daughter-in-law, Dr. Ellen O'Niel, with the same commitment to honest, gentle care. Whether you're bringing in your child for their very first visit or you've been coming to us for decades, you'll always see a familiar face here. From toddlers to grandparents, our family has been proud to take care of yours for generations — right here in Troy.