About the Doctors

Mark Y. Iritani, DDS

Dr. Mark Y. Iritani is an orthodontist in Greenwood Village, Colorado who specializes in treating children, teens and adults utilizing the latest technological advances in orthodontics customizing care to your individual needs.

Born in Durango, Dr. Iritani is a third-generation Coloradoan. In 7th grade, Dr. Iritani decided he wanted to be an orthodontist, and after more than 25 years in practice, he still exudes the same enthusiasm for the profession. As a past President of the Colorado Orthodontic Association, Dr. Iritani stays in the forefront of orthodontics by attending numerous conferences and seminars and is active in local study clubs. He is also a committed member of many dental associations.

In 2015, Dr. Iritani was asked to come back to the University of Colorado to teach in the orthodontic residency graduate program after teaching at the school in the early 1990’s. In addition to sharing his love of family, sports and the mountains with the residents, Dr. Iritani enjoys having the opportunity to pass on his knowledge of orthodontics to a future generation.

Dr. Iritani attended the University of Colorado in Boulder before graduating from the University of Colorado School of Dentistry. He then received a certificate from the University of Nebraska Medical Center for completion of their General Practice Residency Program. After Dr. Iritani completed his Orthodontic Residency Program at Eastman Dental Center in Rochester, New York, he returned home to Colorado.


  • University of Colorado School of Dentistry
  • University of Nebraska Medical Center
  • Eastman Dental Center


  • American Association of Orthodontists
  • Rocky Mountain Society of Orthodontists
  • Colorado Orthodontic Association (President 2004, Board Member 1998-2005)
  • University of Colorado School of Dentistry Alumni Association (Board of Trustees 1995-1998)

Dr. Iritani met his wife, Dr. Patra Watana, a specialist in pediatric dentistry, at Eastman Dental Center. Together they have two children, Matthew and Megan. When not in the office, Dr. Iritani can be found spending time with his family, coaching or watching his children's many activities, or recreating in his many hobbies, including skiing, biking, swimming and scuba diving.

Patra Watana, DMD

Dr. Patra Watana is a pediatric dentist in Greenwood Village, Colorado, who specializes in providing high quality dental care to infants, toddlers, adolescents and special needs children.

Dr. Watana has been practicing pediatric dentistry in the Denver Metro area since 1989. She completed her dental degree at Fairleigh Dickinson School of Dental Medicine in New Jersey and received her post graduate training in pediatric dentistry at Eastman Dental Center in Rochester, New York. Dr. Watana taught part-time at the University of Colorado School of Dentistry as a clinical assistant professor for six years. She is very passionate and dedicated to the field of pediatric dentistry. Because of her love and understanding of children, Dr. Watana enjoys the challenges and rewards of working with children. Her goal is to create a quality dental environment that is joyful and fun for the new generation of children who enjoy going to the dentist.

Dr. Watana is married to Dr. Mark Iritani, an orthodontist. Together they have two children, Matthew and Megan. She has been selected multiple years as one of Denver's Top Pediatric Dentists by 5280 Magazine. She is on the staff of The Children's Hospital and Centrum Surgical Center, which is part of The Health One Group. She enjoys spending time with her family and doing outdoor activities, especially skiing, hiking and watching her kids play sports.

Dr. Watana is a member of many professional associations, including the:

  • American Dental Association
  • American Academy of Pediatric Dentistry
  • Colorado Dental Association
  • Metro Denver Dental Society
  • Southwestern Society of Pediatric Dentistry


Family Photos