Meet The Doctors

Dr. Michael Greding, DDS, is originally from Thousand Oaks, California. He graduated with a bachelor’s degree in biology from BYU in 1997 and graduated from UOP Dental School in 2001 with honors. In 2001, he moved to Arizona. Dr. Greding has been married 23 years to wife, Carlie. They have 5 children, a daughter in law, a son in law and four grandchildren. Two girls and twin boys! In his spare time, he enjoys the gym, exercise, playing competitive baseball, water skiing, snowboarding, and surfing. Dr. Greding loves to travel with his family.

He has been a pioneer in CEREC dentistry and has been using the CEREC technology (same day crowns) since 2002; being one of the most experienced dentists in all of Arizona. In April of 2018, he joined the OnCall Dental family. Now, he has purchased the Tempe location and is incorporating all aspects of family, restorative, and cosmetic dentistry to the practice—while still not forgetting emergency patients and relieving same-day pain.

Dr. Ryan Cullinan, DDS, is a seasoned professional with over 20 years of experience in general dentistry, specializing in dental implants and full-mouth reconstructions. He advocates a patient-centered approach, emphasizing education and open communication. Dr. Cullinan holds a Doctor of Dental Surgery and an undergraduate degree in Pharmacy from the University of Iowa. His skills encompass general dentistry, dental implants, full-mouth reconstructions, patient education, and advanced dental technologies. He believes in a collaborative patient-provider effort and focuses on personalized, compassionate care.

On a personal note, Dr. Cullinan is family-oriented and married, with three daughters and two dogs. He is an outdoor enthusiast who enjoys hiking and skydiving and is committed to community service and continuous learning. He aims to provide exceptional dental care that meets each patient's unique needs.