Our Team

Dr. Mario Herrejon-Ruiz

DMD

“Dr H” is a graduate of the University of Nevada, Las Vegas. He completed his Doctor of Medical Dentistry degree at the UNLV School of Dental Medicine in 2009. He understands the anxiety and fear associated with dental appointments and works hard to make the dental experience at Val Vista Smiles as pleasant painless as possible.

Dr. H is married and has three kids. When not at the office he is usually with his wife watching kids at soccer, volleyball, or basketball. He loves being involved with the school activities, being outdoors and working on anything that has an engine with his 16yr old son. 

Dr. H has a passion for detail and loves when patients are as involved with their care as he is. He has an incredible bedside manner and believes all patients deserve the best in time, quality and artistic outcomes. He truly loves being a dentist and it shows in his everyday commitment to the craft and to his patients. 

Erica

Registered Dental Hygienist

Erica has had a passion for dentistry for as long as she can remember. After working in the veterinary field as a Certified Vet Tech for 22 years taking care of pet’s oral health, she decided to shift into human medicine. She went back to school to become a Registered Dental Hygienist at Rio Salado College in Tempe, AZ and loves her new career!
What she enjoys most about dentistry is building relationships with her patients while educating and helping them achieve their best oral health.
She grew up in Minnesota, then moved to Colorado where she met her husband. We move to Arizona in 2012 and to start a family. Her and her husband have a son and 2 cats(Charlie and Gracie).  

Erica

Registered Dental Hygienist

Erica has had a passion for dentistry for as long as she can remember. After working in the veterinary field as a Certified Vet Tech for 22 years taking care of pet’s oral health, she decided to shift into human medicine. She went back to school to become a Registered Dental Hygienist at Rio Salado College in Tempe, AZ and loves her new career!
What she enjoys most about dentistry is building relationships with her patients while educating and helping them achieve their best oral health.
She grew up in Minnesota, then moved to Colorado where she met her husband. We move to Arizona in 2012 and to start a family. Her and her husband have a son and 2 cats(Charlie and Gracie).  

Natalie

Registered Dental Hygienist

Originally from Illinois, I started my dental career 13 years ago when I moved to Arizona. I enjoyed being a dental assistant and decided to further my education and become a hygienist.
What I love most about this field is the connections I’m able to make with my patients. I strive to help those who may be apprehensive feel comfortable and confident. Treating each patient as if they were family has always been my standard of care.
In my free time, I love attending sporting events, concerts, and traveling with my daughter.

Dawn Sims

Front Office Coordinator

Dawn is a wife and mom of 3. She moved to Arizona in 2017 with her family.  She loves spending time with them and traveling. Some of her favorite things include; challenging her fears, photography, hiking, paddle boarding, and our summer storms. Her bad habits include drinking Dr. Pepper or Coke Zero, but don’t worry she brushes her teeth often. 
 
Dawn transitioned from stay-at-home mom to working mom when Val Vista Smiles opened in December 2022. As a newcomer to the dental world, Dawn has eagerly embraced the challenges and looks forward to continued growth.  One of her favorite things about dentistry is watching the artistry/lab side and that no two days are the same.

Dawn Sims

Front Desk / Benefits Coordinator

Dawn is a wife and mom of 3. She moved to Arizona in 2017 with her family.  She loves spending time with them and traveling. Some of her favorite things include; challenging her fears, photography, hiking, paddle boarding, and our summer storms. Her bad habits include drinking Dr. Pepper or Coke Zero, but don’t worry she brushes her teeth often. 
 
Dawn transitioned from stay-at-home mom to working mom when Val Vista Smiles opened in December 2022. As a newcomer to the dental world, Dawn has eagerly embraced the challenges and looks forward to continued growth.  One of her favorite things about dentistry is watching the artistry/lab side and that no two days are the same.

Katie

Practice Manager

Katie brings over 15 years of dental experience to our office. Her dental career started in 2007 as a pediatric dental assistant. She decided quickly that the business side of the office was more her style. She is very passionate about dentistry and enjoys changing lives one smile at a time.
 
Being born and raised in Washington state Katie’s love of sunshine brought her to the Sonoran desert, she spent 6 years in Palm Springs are before calling Arizona home in 2018. She lives with her fiancé Greg, and her fur babies. In her free time, she enjoys 4×4 in her Jeep, spending time with her mom and traveling the country. 

Lyndsay

Certified Dental Assistant

Lyndsay is a native to Arizona, born and raised in Northern Arizona. She attended Carrington
College where she graduated in 2023 as a certified Dental Assistant. Lyndsay chose a career in
dental because of her passion for making others feel confident about their smile.

Lyndsay recently got married to her husband, Ethan. They have a dog named Bailey and enjoy
taking their Harley out for adventurous rides. Lyndsay also enjoys shooting archery and cheering on the Kansas City Chiefs in her free time.

Lyndsay

Certified Dental Assistant

Lyndsay is a native to Arizona, born and raised in Northern Arizona. She attended Carrington
College where she graduated in 2023 as a certified Dental Assistant. Lyndsay chose a career in
dental because of her passion for making others feel confident about their smile.

Lyndsay recently got married to her husband, Ethan. They have a dog named Bailey and enjoy
taking their Harley out for adventurous rides. Lyndsay also enjoys shooting archery and cheering on the Kansas City Chiefs in her free time.

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