Your Search Stops at Our Fountain Valley Office Andrew G. Mortensen D.D.S. Welcomes You
Located at 18837 Brookhurst Street, Suite 109, Andrew G. Mortensen D.D.S. is in the heart of Fountain Valley. We are within easy reach for dental patients all over Orange County.
Take a Look at Our Practice

Learn More About Our Practice Request a Consultation with Dr. Mortensen
Accredited by the American Academy of Cosmetic Dentistry, California Dental Association, and Orange County Dental Society, you can rest assured that Dr. Andrew G. Mortensen will help you achieve your goals with a personalized dental treatment plan.
We invite you to contact our Fountain Valley dental office today if you would like to learn more about the cosmetic and restorative dentistry care we offer:
Call Us: (714) 964-4183

"Dr. Mortensen and staff are the best!" 5-Star Reviews From Fountain Valley Area Patients
Dr. Mortensen and staff are the best! I've recommended a lot of people here and everyone loves them.
View on GoogleI have been going here for years and Dr Mortensen has been one of the best I have ever had!
View on GoogleMeet Dr. Andrew G. Mortensen
After graduating from Northwestern University's Dental School in 1979, Dr. Mortensen moved to the state of California to begin his general and cosmetic dentistry career path.
Even though his career as a dentist spans six decades, Dr. Mortensen still takes continuing education courses to stay on top of new and improving dental techniques and practices.
Dr. Mortensen is accredited by the American Academy of Cosmetic Dentistry, an honor bestowed on only a few hundred dentists in the United States. From his educational background to his awards and accolades, you can count on our dentist to handle all of your dental care needs.

Memberships and Affiliations
Meet Our Staff
Jackie Michel, Office Manager
Jackie is the first friendly face you'll see when you enter our dental practice. She can help check you in, schedule your next appointment, and maximize your insurance plan's benefits.
Katie Ledesma, RDA
Erika has been a dental assistant since the early 2000s and has been an immense help to Dr. Mortensen since the early 2010s. Our patients love Katie's energetic and friendly personality.
Erika Lieber, RDH
Erika has been a dental hygienist since the early 2000s and has been an integral part of Dr. Mortensen's staff since the early 2010s. With a gentle touch, Erika will make sure your teeth are squeaky clean.
Ashley Davis, RDH
Ashley has worked as a dental hygienist since the early 2000s and has been a skilled member of Dr. Mortensen's staff since 2020. She's easy to talk to and provides care for your teeth using a gentle hand.
Communities We Serve
Our dental practice is conveniently located in the heart of the Fountain Valley. We are easily accessible to individuals from different Orange County communities, including:
- Newport Beach
- Costa Mesa
- Huntington Beach
- Santa Ana
- Irvine
- Long Beach
Get the Process Started
Plan for your visit to our dental practice by filling out our patient forms before your appointment.
Insurance and Financing At Our Fountain Valley Office
Insurance
Our office manager, Jackie Michel, can help maximize your health insurance benefits and determine if our office accepts your provider. Insurance can cover various procedures, but cosmetic procedures are not covered by insurance.
Financing
If you don't have dental health insurance or are undergoing a cosmetic dentistry procedure that's not covered by health insurance, we accept financing through CareCredit® to help you break the cost of treatment into affordable monthly installments.
Featured Services
General Dentistry
Regular teeth cleanings are vital for maintaining healthy dental hygiene. Our dentistry office offers fillings, inlays and onlays, and TMJ treatment for our patients.
Restorative Dentistry
Dental health problems can be resolved through restorative dentistry procedures, such as dental bridges, dentures, root canal therapy, and full mouth reconstruction.
Cosmetic Dentistry
Our dentist can help minimize cosmetic imperfections of the teeth and gums through dental implants, dental bonding, veneers, periodontal reshaping, Invisalign®, and more.
"Always a five star experience." More 5-Star Reviews From Fountain Valley Area Patients
Always a five star experience. Great dentist with exceptional staff.
View on GoogleGreat dentist. Very painless procedure and quick recovery.
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