Staff Directory

We recognize that all our patients are unique and deserve to receive orthodontic care that reflects their individual needs. Our experienced and talented team is committed to working with you and your family to create a comfortable, stress-free, and rewarding orthodontic experience every time you visit our practice.

We are pleased to welcome you and your family, and we look forward to working with you.


Financial Coordinator

Hi! My name is Ali. I am one of the friendly faces you will see in our reception area. I went to school for dental hygiene in Austin, Texas, but decided that the administrative side of dentistry was where I could really make a difference. I specialize in patient finances and in helping you maximize your insurance benefits. I have been in the dental field since 2007, and I love it! There’s nothing better than seeing big smiles on people who finally have the smile they have always wanted. I look forward to getting to know you and helping you with your new smile!

I grew up in San Juan Capistrano and rode horses competitively for 16 years. My husband and I spend a lot of time outdoors camping, hiking, and simply enjoying nature. We love spending time with our family and hang out with our niece and nephews any chance we get. I also have two cats to keep me company at home.


Scheduling Coordinator

Hello! My name is Diane and I’m here to help you with any of your scheduling needs.  I am originally from England and came to the United States 25 years ago.  I have 2 children and 3 step children, all in their 30s.  I love to walk the beach and am an avid reader.   

I have lived in Orange County for 25 years and for a while owned a company called "Flavor of Britain".  I also worked in the veterinary industry for years.  The thing I enjoy most about working at Olsen Orthodontics is seeing patients leave the office with big confident smiles. I look forward to helping you get the smile you've always wanted!


Treatment Coordinator

Hi there, my name’s Katie, and I'm the Treatment Coordinator.  I absolutely love interacting with people!  Where some might see a busy schedule, I see a day full of opportunities to meet people with different personalities and make them all feel at home. This truly is one of my great passions in life (along with football). I have always been fascinated by orthodontics and even interned at an office when I was younger. While I ended up going in a different direction for my schooling, it is so awesome to be back in the orthodontic world that I enjoy so much.

I’ve always lived in South Orange County and am blessed to have all my family close. I love sports, reading, the outdoors, being with friends and family and especially my 2 cats, Fred and George.  I love hearing people’s stories along their way to a beautiful smile, so I look forward to hearing yours!


Back Office Assistant

I have been exploring the dental field since the tenth grade when I took an R.O.P. class and fell in love with dentistry. At Olsen Orthodontics, I make sure that all operations in the back office run smoothly. I am very outgoing, respectful, honest, fun, and motivated. I enjoy meeting new people and feel honored to have played a part in their straight teeth and perfect smile.

In my free time I enjoy playing a variety of sports, including soccer, racquetball, football, and basketball. I also like to cook, work out, and spend time with my family.  My wife and I recently welcomed our first child into the world!  Most of all, I enjoy helping people like you achieve an amazing new smile. I can’t wait to meet you!


Back Office Assistant

I assist Dr. Olsen with all aspects of patient care, including taking X-rays and scans, performing doing orthodontic adjustments, and creating a warm, welcoming environment for our patients to enjoy.  I have been in dentistry for some time now but I love orthodontics even more than general dentistry!  I look forward to making your visit with us as pleasant as possible. 



Back Office Assistant

While I used to work with the team every day, I now help my husband with his business so I join the team ocassionally when needed.  I love creating a warm, welcoming environment for our patients to enjoy. Watching as our patients’ smiles transform throughout their treatment is the best part of my job. I also really like the people with whom I work. Dr. Olsen is down to earth, very real, and understands everyone, young and old. Our team is very happy and well put together; it’s a very positive and happy place to work!

My husband and I moved here from Washington six years ago. We love the sunshine and love all kinds of outdoor activities, going to the beach, and spending time with our family and friends. 

Rosie Markowski

PR Coordinator

I work with the community directly and on social media to promote healthy oral care, as well as the variety of services provided at Olsen Orthodontics. It’s rewarding to work with such a great team and the community, especially the local schools, to do my part behind the scenes to help make people smile!


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