Dr. Liz Cortez

Liz Cortez

Hi there! I am Liz, the lead treatment coordinator here at Dental Oasis. I am a local girl, born and raised in Sunny Southern California. Since I was little, I have always enjoyed going to the dentist. I started my career in dentistry as a dental assistant, and later on, moved into the business operations side of dentistry. I love what I do because every day, I get to meet great patients and help them smile and stay healthy.

In my spare time, I love spending time with my family and friends outdoors or watching sports! GO DODGERS!

The one word that would describe me the best would be motivated! I get motivated after learning new skills and improving myself to be the best that I can be in all that I do.



Gracie was born and raised in the Philippines and is the youngest of three siblings. She started assisting in dentistry at age 16 and graduated from American Career College with her Registered Dental Assistant Degree (RDA) in 2006. Gracie takes great pride in her work and absolutely loves learning new techniques in modern dentistry. Her daily goal at work is to make each patient smile and feel comfortable while providing the best care possible.

When Gracie is not working, she spends her time with friends, family, her significant other, Craig, their daughter Yumi, and their cat, Sylvia. She also likes to play airsoft and paintball when she gets around to it.


Niki – RDH

Nikki was born and raised in Westminster, California, and graduated from San Joaquin Valley College with her Associate Degree in Dental Hygiene. She has also obtained her MBA from Capella University and her Bachelor of Science in Health Care Administration and Management at Grand Canyon University. Nikki loves educating her patients on improving and maintaining their oral health as well as providing high-quality dental care. She is very passionate about dentistry and, most importantly, loves getting to know her patients individually. She has been a full-time Hygienist for over 7 years and takes great pride in providing optimal care for her patients utilizing lasers and much other advanced technology.

Nikki and her husband, Dung, have two young children (ages 10 and 7). In her free time as a busy mommy, she enjoys going to her children’s Taekwondo events, cooking, and traveling.