Cornerstone Dental

For more than nine years, Dr. John C. Kromhout has served Columbus area patients with comfortable dental care built to last. As a third generation dentist, he looks forward to serving the Powell community. Dr. Kromhout grew up in Hilliard, Ohio, then traveled to Miami of Ohio for his undergraduate degree. In 2004, he received his Doctor of Dental Medicine (DMD) from The University of Kentucky. Dr. Kromhout continues to participate in post-doctoral dental continuing education courses. He is a me...Read Morember of the American Dental Association (ADA), Ohio Dental Association (ODA) and Columbus Dental Society (CDS). Dr. Kromhout lives in Powell with his wife Abbey and their three children. When he is out of the office, he enjoys running around with his kids and spending time with his family. Read Less

As our Practice Coordinator, Ashley Hammond takes great pride in meeting the customer relations needs of our practice. She looks for opportunities to make a difference and is particularly excited to welcome patients into our new practice. Ashley earned a Bachelors Degree in Business Administration with a minor in Medical Office Management from Franklin University. She has spent over ten years in the dental field working in a dental lab as well as in a dental office. Ashley is able to provide ...Read Morehigh standards of service and reliability for our patients. She and her husband Jude enjoy socializing and spending time with family and close friends. Read Less

Tiffani is our EFDA/Certified Dental Assistant. She has been working in the dental fiend since 1999. In 2010 she received her certification in Expanded Functions for Dental Auxiliaries (EFDA) giving her the training and capability to place restorations (fillings and sealants). She is passionate about placing restorations that make the patient feel great about their smile. Tiffani also takes great pride in building trusting relationships with our patients by explaining procedures and answering an...Read Morey questions they may have. In her free time, Tiffani loves spending time with her husband, Jeff, and their daughter. They enjoy hiking, biking, rollerblading, BBQ and just hanging out with family and friends. Read Less

Allison is our Registered Dental Hygienist who graduated from CSCC with a Degree of Applied Science in Dental Hygiene. She is also licensed to administer local anesthesia and nitrous oxide sedation. She has a great interest in the field of dentistry and keeps her knowledge up to date by completing many hours of continuing education per year. She loves forming relationships with her patients and educating them on how to keep a healthy smile. In her free time, Alli enjoys staying active by runn...Read Moreing, riding her bike and playing intramural volleyball. She also enjoys traveling, cooking and socializing with friends and family Read Less