All our professionals at Smile For Life Dentistry maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in dentistry.

Chia Y. Wu, DMD

Dentist / Co-Founder

Dr. Chia Wu is originally from Taipei, Taiwan. Her parents moved to the U.S. when she was very young and raised her in southern California. She attended the University of California, San Diego where she received her B.S. in Physiology and Neuroscience in the beautiful town of La Jolla. It was at UCSD where she volunteered as an assistant at a free dental clinic run by pre-dental students to provide care to those less fortunate. This work inspired her passion for dentistry and led her to pursue her Doctorate of Medical Dentistry (D.M.D.) from Temple University, Kornberg School of Dentistry in Philadelphia, PA., which she earned in 2007.

Being a firm believer in advancing her education to the highest level, she received further training in the care of patients with complex medical conditions and advanced dental restoration challenges at a two-year general residency at New York Hospital of Queens in Flushing, NY. Here she received training in a variety of other areas of dentistry including oral surgery, periodontics (gum health), pedodontics (child dentistry), endodontics (root canal therapy), and implant dentistry.

As a leading family dentist and Oral Appliance Therapy provider in Phoenix, AZ, Dr. Wu continues her education today by frequently completing advanced coursework in cosmetic and restorative dentistry, orthodontics (both invisible braces and brackets/wires), Oral Appliance Therapy for sleep-related breathing disorders including sleep apnea, and implant restorative dentistry to make sure her patients not only receive the most up to date quality care but also receive the education they need to understand their oral health conditions. She is an active member of various dental organizations, including, the Arizona Dental Association, Academy of General Dentistry, Central Arizona Dental Society, and the American Academy of Dental Sleep Medicine.

Away from work, Dr. Chia Wu enjoys working out at her crossfit gym, cooking various types of ethnic foods, and most importantly, spending time with close family and friends.  She is married to Smile for Life's Co-Owner and CEO, Brandon Quijada.

Smile for Life Dentistry


Sean O'Grady, DMD


Dr. Sean O'Grady was born and raised in Phoenix.  He graduated from the University of Arizona with a degree in physiology and then from Boston University School of Dental Medicine with a Doctorate of Dental Medicine (DMD). 

Dr O'Grady was the chief resident at Metropolitan Hospital in New York City for his 2 year General Practice Residency.  After his residency, Dr O'Grady practiced emergency and family dentistry in Chicago for 4 years.  While there, he continued to hone his expertise in root canals, extractions, implants, urgent dental care, and family dental care. 

Dr O'Grady makes patient care his #1 focus and strives to make every patient's visit successful and comfortable.

In his off time, he likes to run and especially enjoys trail running.  He has completed six marathons since 2013.  He also enjoys cooking all his meals, reading, and relaxing with his dog at home.

Smile for Life Dentistry


Spencer Peoples, DMD


Dr. Spencer D. Peoples is originally from Grosse Pointe, Michigan and has been in Arizona for 30 years in 2018! After graduating from New Mexico State University, he attended the University of Pennsylvania School of Dental Medicine, one of three Ivy League dental institutions. Following this, Dr. Peoples completed a one year general practice residency at the University of Nevada - Las Vegas School of Dental Medicine where he gained additional training in several specialities including anesthesiology, endodontics, periodontics, and oral surgery, among others.

Dr. Peoples has been practicing in Arizona for nearly 10 years and is highly skilled in a wide range of dental treatments and procedures, from full mouth reconstruction and smile makeovers to Invisalign, implants, root canals, extractions, and same-day inlays, onlays, and crowns milled right here in the office. Continually seeking to hone his expertise, Dr. Peoples is extremely active in attending various continuing education opportunities. He is currently a member of several dental organizations including the American Dental Association, the Arizona Dental Association, and the Academy of General Dentistry.

Dr. Peoples prides himself on excellent patient care that not only meets, but exceeds expectations. He respects his patients and understands that everyones’ oral health needs are different. Dr. Peoples will always listen and create a personalized treatment plan designed to address the goals and unique dental health of each patient.

Dr. Peoples is married to his beautiful wife of five years, Megan, has two young daughters, Faith and Bella, and one awesome Vizsla (or dogter as the family likes to call her), Savannah! In his spare time, Dr. Peoples enjoys Scottsdale Bible Church, cooking, exercise, and any outdoor activities that keep him active with his family. 

Smile for Life Dentistry

Thomas Nguyen, DDS


Dr. Nguyen is originally from Vietnam and grew up in California.  He earned a bachelor's degree in Microbiology at the University of California at Davis and worked in the biotech industry for a year before attending UCSF School of Dentistry where he was awarded his D.D.S. degree.

Dr. Nguyen holds licenses in both California and Arizona and is a member of the American Dental Association (ADA).  He performs all aspects of dentistry but enjoys cosmetic, implant and removable prosthetic dentistry the most.  He is a compassionate dentist who strives to reach the most ideal solution for patients' dental needs.

Outside of dentistry, he is an avid fan of the outdoors and enjoys camping, hiking, hunting, fishing and mountain biking.

Smile for Life Dentistry

Meet the Staff

Brandon Quijada
CEO / Co-Founder
Team Member since 2011
[email protected]



Jacquelyn Owen, RDH
Registered Dental Hygienist
Team Member since 2012



Lori Lindseth
Treatment Coordinator
VP of Operations
Team Member since 2014
[email protected]


Mayra Vera
Patient Care Coordinator
Team Member since 2011
[email protected]

We SHOW (not just TELL) you your dental conditions

Your Safety is Our Top Priority
We maintain the highest standards of sterilization & patient safety, including those of the Centers for Disease Control, in order to best safeguard your health & well-being. 

Smile for Life Dentistry

Contact Us

Smile for Life Dentistry

(602) 789-1131
(602) 783-8109
10209 North 35th Avenue, Suite 129 Phoenix, AZ 85051