Office Address

1502 E. Collins Ave.
Orange, CA 92867

Phone & Fax

Phone: (714) 288-8464
Fax: (714) 288-8474

Book Appointment

Business Hours


9:00 am – 5:30 pm
10:00 am – 7:00 pm
9:00 am – 5:30 pm
9:00 am – 5:30 pm
9:00 am – 5:00 pm

Dental Offices

California Dental Group of Orange

This office is where California Dental Group first opened our doors, with the goal of providing exquisite dentistry to each and every patient. Over the past 17 years our company has grown and changed quite a bit, but our goal has not. We will always have a special place in our hearts for the outstanding community of Orange, and the loyal patients who have supported us all these years! For those of you who are new patients (or if it has just been awhile since your last visit) our office is located at the cross streets of Tustin and Collins Ave. We are directly across the street from the Albertsons Shopping Center. We love helping the people of Orange, and celebrate your diversity!

If you are interested in learning about the doctors that work at our Orange location, please scroll down for more information!

Meet the Dentist(s)

Dr. Kooshyar Tahmasbi, D.D.S.
Dr. Kooshyar Tahmasbi, D.D.S.
Studied Dentistry at the University of Southern California

Dr. K (as his patients like to call him) comes from a family of doctors. He currently resides in Orange County, where he has developed a reputation for outstanding dental work. He first graduated from Tehran Azad University in 2000, but further advanced his knowledge and skills through the Advanced Standings Program for International Dentists at USC’s Herman Ostrow School of Dentistry. 

With over 20 years of experience under his belt, Dr. K has developed a deep passion for dentistry and takes pride in providing quality dental work. He continues to self-educate on the latest techniques and treatments, to ensure that his patients, “leave with a smile on their face.”

When he is away from the office, Dr. K loves to spend time with his beautiful wife and daughter, travel, or go for a walk with his pet dog. His hobbies include volleyball, tennis, and charity work!

Dr. Jason Morgan, D.D.S.
Dr. Jason Morgan, D.D.S.
Studied Dentistry at the University of Southern California

Dr. Morgan grew up in Newport Beach, where his father worked as dentist. Following in his father’s footsteps, Dr. Morgan became a dentist and now serves as the CEO at California Dental Group. He is the father of four children, and an avid Los Angeles Lakers fan!

Dr. Morgan comes from a large family of dentists so after completing his undergraduate requirements in Southern California and Utah, he attended the University of Southern California’s Ostrow School of Dentistry. 

Dr. Jason Morgan is a caring, skilled professional, dedicated to simplifying what is often a very complicated and difficult area of health care. He wants all of his patients to be informed and knowledgeable about their dental health care, from treatment plans and services, to insurance coverage. Dr. Morgan personally helps hundreds of patients improve their smile each year. 

On his off time, Dr. Morgan enjoys watching sports, reading, taking his kids to the park, and doing puzzles.

"Is there a dentist near me?"