Drs. Karen and Johnny Koo are your trusted husband-and-wife dental team, dedicated to providing comfortable, quality care tailored to your unique dental needs. The Koos met and began dating after their freshman year at Loma Linda University School of Dentistry and were married shortly after their graduation in 2003. Along with their two young daughters, they reside in North Orange County, and have operated Brea Ranch Dentistry since July of 2012. Though they only recently took over the practice, they are pleased with the positive reception and extremely touched by the support and kind words from their patients and staff. Their goal is to provide you with a positive dental experience, a healthy smile, and a trusting relationship with their friendly, caring team.
Johnny began his path to dentistry by earning a degree in psychobiology, then continuing on with his four-year dental training at Loma Linda University School of Dentistry. As the associate dentist for a group practice, he has devoted the last decade to furthering his dental continuing education and advancing his clinical skills. He and his wife Karen have been serving the local community since the Summer of 2012 when they became the new owners of Brea Ranch Dentistry.
Dedicated to the pursuit of advanced training, Dr. Koo works to stay abreast of the latest techniques and technologies in dentistry. He has continued to pursue advanced education in areas important to his patients, such as cosmetic and implant dentistry.
Dr. Koo is passionate about helping his patients achieve excellent oral health and creating a quality patient experience. From offering alternative treatment options to helping each patient come to a decision they are comfortable with, his desire is for his patients to be happy with the treatment they receive.
In his spare time, Johnny enjoys an occasional round of golf or tennis and spending time with his family. His greatest joys are his 8 and 10 year old daughters, who have a blast playing games and outdoor activities with their hands-on dad. He is happily married to his best friend and fellow colleague Karen.
Karen completed her undergraduate studies in the Napa Valley and graduated with a B.S. in Biology. She then earned her D.D.S. at Loma Linda University School of Dentistry and was the recipient of the Academic Excellence Gold Award for her performance on Parts I and II of the National Boards. Throughout her dental career, she has participated in various educational and training opportunities, including short term orthodontics. Dr. Koo is a certified provider for 6 Month Smiles short-term orthodontics, and she herself is also a 6 Month Smiles clear braces patient!
Before coming to Brea Ranch Dentistry, Karen enjoyed working as an associate dentist in private practice and was fond of working with all age groups, including small children. Her gentle, caring nature tends to put patients at ease. It is Dr. Koos ongoing mission to create a comfortable dental environment for her patients and to provide them with personalized, compassionate and quality dental care.
When not at the office, Karen is a busy mom to her high-spirited little daughters. She values quality time with her family and enjoys volunteering her time and service at her daughters school and at her church.
Reviews
Rating 5.0 out of 5 based on 9 reviews
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newest oldest highest lowestSherry Mcbride
2 years ago
Dr. Karen is very nice, genial, and professional. She is very patient and fixed my cavities perfect.
Haley Choi
2 years ago
Wonderful dentist! Karen and Johnny run a fantastic practice. They provide great care, honest about what work you need and always looking out for whats your best dental health. Definitely will be a repeat patient and will recommend them to anyone looking for top quality care and service. Also on my most recent visit in June 2020, I felt extremely safe becuase of their multiple covid safety and health precautions.
Haley Choi
3 years ago
Wonderful dentist! Karen and Johnny run a fantastic practice. They provide great care, honest about what work you need and always looking out for whats your best dental health. Definitely will be a repeat patient and will recommend them to anyone looking for top quality care and service. Also on my most recent visit in June 2020, I felt extremely safe becuase of their multiple covid safety and health precautions.
Miki Ewens
4 years ago
Highly recommended dental office where they take excellent care of all dental issues, are very conscientious about explaining everything that needs to be done, and are extremely trusting on costs charged. We drive over 60 miles one way to this office because of their high integrity. It is really difficult to find an office so trusting and caring about your dental health.
Jennifer Young
4 years ago
I am so afraid of the dentist, and it's been a while since I've had a checkup and cleaning! I researched dentists in Brea and decided on Brea Ranch. I was nervous but I went. I'm so glad I did!!! I adored the staff! I loved the dentist! I loved that it's in Brea! I didn't feel a thing and the dentist was very thorough. My husband has an appointment coming up as well. I'm just so relieved.
Jennifer Young
5 years ago
I am so afraid of the dentist, and it's been a while since I've had a checkup and cleaning! I researched dentists in Brea and decided on Brea Ranch. I was nervous but I went. I'm so glad I did!!! I adored the staff! I loved the dentist! I loved that it's in Brea! I didn't feel a thing and the dentist was very thorough. My husband has an appointment coming up as well. I'm just so relieved.
Miki Ewens
5 years ago
Highly recommended dental office where they take excellent care of all dental issues, are very conscientious about explaining everything that needs to be done, and are extremely trusting on costs charged. We drive over 60 miles one way to this office because of their high integrity. It is really difficult to find an office so trusting and caring about your dental health.
Greg Cahill
7 years ago
Phenomenal dentist office! I went in for a couple of cavities, and can't say enough good things about my experience. The staff was warm, friendly, and super easy to talk to. The doctor was really personable and explained what he was doing through the entire process. If all dentists operated like these guys there wouldn't be such fear of dentists. 10/10 would recommend.
Greg Cahill
8 years ago
Phenomenal dentist office! I went in for a couple of cavities, and can't say enough good things about my experience. The staff was warm, friendly, and super easy to talk to. The doctor was really personable and explained what he was doing through the entire process. If all dentists operated like these guys there wouldn't be such fear of dentists. 10/10 would recommend.
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