About Our Doctors

Dr. Mark Iritani | Dr. Patra Watana | Dr. Matt Iritani

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. Matthew will be starting his orthodontic residency at the University of Colorado School of Dental Medicine. Megan hopes to pursue pediatric dentistry like her mom. When not in the office, Dr. Iritani can be found spending time with his family or recreating in his many hobbies, including, skiing, biking, swimming and scuba diving.

Patra Watana, DMD

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

Matt Iritani, DDS, MSD


Dr. Matt Iritani has always wanted to be a dentist. In fact, before he could sign his own name, he used crayons to draw a picture of himself as a dentist, one day hoping to practice with his mom and dad. That dream became a reality when he graduated valedictorian from the University of Colorado School of Dental Medicine. While in dental school, Dr. Matt was inducted in the dental honor society Omicron Kappa Upsilon and was recognized by the American Association of Orthodontists and the American College of Dentists. Dr. Matt attend his orthodontics residency program at the University of Colorado School of Dental Medicine where he graduated as Resident of the Year and was asked to teach as a part-time faculty member. He also completed an additional fellowship in Invisalign and other clear aligner systems and is board certified by the American Board of Orthodontics.

Dr. Matt grew up in the Greenwood Village area and attended Cottonwood Creek Elematary School, Campus Middle School, and Cherry Creek High School, where he was Student Body President, state champion in Lincoln Douglas debate, and a swim team captain. He had the opportunity to attend the University of Denver on a Boettcher Scholarship, where he was involved in the Pioneer Leadership Program.

Dr. Matt enjoys giving back to the community, having volunteering at a student-run dental clinic in Aurora, the Children’s Hospital, and throughout he metro area with the Boettcher Foundation. He also served on the board of the Japanese American Citizens League. Dr. Matt is a diehard skier, enjoys playing basketball, and runs marathons in his spare time.

Honors and Awards:

  • American Board of Orthodontics Board Certified Orthodontist
  • CU Orthodontics Resident of the Year
  • American Association of Orthodontists Award
  • American College of Dentists Student Professionalism and Ethics Award
  • Omicron Kappa Upsilon Dental Honor Society William S. Kramer Award
  • American Academy of Oral and Maxillofacial Radiology Award
  • Dr. Barry Beauvais / Special Care Dentistry Association Award

Family Photos

    Patra Watana Pediatric Dentistry & Iritani Orthodontics

    • Patra Watana Pediatric Dentistry & Iritani Orthodontics - 8200 E. Belleview Ave., Suite 420-E, Greenwood Village, CO 80111 Phone: (303) 740-7088

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