About the Doctors

Our goal is to provide the highest quality pediatric dental care while treating all our patients with respect and individuality. We will strive to always have your child's best interest at heart. We are committed to serving our community as we remain active in it; taking part and leading in different opportunities to give back to the community of Phoenix, Arizona.

Lidieth Libby, D.D.S.

Diplomate of the American Board of Pediatric Dentistry and Member of the American Academy of Pediatric Dentistry

I grew up in a loving home in Monterrey, Mexico. My parents were and continue to be a source of inspiration and an example of love and of service to others.  Ever since I was a young girl I wanted to be like my parents, I wanted to help people. From a young age we did mission trips as a family all over Mexico.  My dad was a successful general surgeon and always encouraged us to seek higher education. This lead me to complete my DDS degree at the UANL in Monterrey, Mexico as well as completing a 2 year pediatric dentistry program. Seeking higher education I went on to complete my second pediatric dental residency training at the University of Connecticut Health Center. After graduation, I completed a one year fellowship program at the Connecticut Children’s Medical Center treating patients in a hospital setting. I feel blessed to have had amazing mentors who took the time to teach me much more than pediatric dentistry.

I became board certified in 2001 and participate in the Renewal Certification Process annually.

I am on staff at Phoenix Children's Hospital where we provide care for medically compromised children and children with special needs.

My life mission statement is “ I exist to serve God by serving and loving others for His glory” Pediatric dentistry is an opportunity to not only do what I love as a profession but to fulfill my mission statement. To serve and love others…your children…my patients and you, the parent. Motherhood has taught me a lot, I understand your worries and I share them with you. When your children are in “my care” they become my kiddos. I will treat them as mine.

I am married to the most wonderful man in the world and I am lucky to work next door to his dental practice. We are blessed to be the parents of 2 boys and 1 baby girl. We love to do medical mission trips as a family and traveling. We love football and we look forward to the Cardinals winning a Super Bowl in our lifetime! 

We look forward to serving and loving your family! 

We love to love you.


Dr. Libby has worked with the American Board of Pediatric Dentistry as Oral Board Examiner.





Tiffany Andersen, D.M.D.

Children have always been a big part of my life. I have experienced the joy of kids through working in orphanages in Mexico, volunteering at the Child Crisis Center, teaching Sunday School at church, and raising two of my own with my loving husband.

I graduated from the University of Arizona with a bachelor’s degree and then received my Doctor of Dental Medicine at the Arizona School of Dentistry and Oral Health in Mesa. After dental school, I worked at a child-focused dental practice for two years while volunteering at St. Vincent de Paul’s teaching dental students. I then went on to complete my residency in pediatric dentistry at the University of Minnesota.  During my training in Minnesota, I was given valuable and educational opportunities including rotations at Gillette Children’s Specialty Healthcare (a center offering specialized care to children with special and complex needs) and serving on the Craniofacial, Velocardiofacial, and Cleft Lip & Palate team.  One of my proudest achievements is becoming board certified in pediatric dentistry.

Being from Arizona, I am happy to be back home.  I especially look forward to meeting families, like yours, from the same community I live in (Desert Ridge). You may see me in the neighborhood biking or running with my dog, Bailey.  I also love baking, cooking, playing piano, gardening, and spend time with my family.

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