Meet Our Friendly Dental Office Staff in Costa Mesa California

The first thing you'll notice when you walk into our Costa Mesa family dental practice is the incredibly friendly and inviting atmosphere. Members of our staff have been hand-picked to provide you the best possible experience during your visit to Dr. Katherine Harrell. Learn more about our Costa Mesa team below!

Bobbi Ferraro, RDH
Bobbi was raised locally in Garden Grove and attended Mater Dei High School. She obtained her B.S. degree in Dental Hygiene from Marquette University. Her warm outgoing personality puts patients at ease. She has been working in our office for many years, so when her patients come in it's like visiting with friends. She enjoys traveling with her husband and spending time with her children and grandchildren.
Lorna Dorsman, RDH
Lorna was raised in Lakewood, CA and moved to Costa Mesa in 1985. She first became a dental assistant and then went back to school for dental hygiene, graduating from Cerritos College in 1982. On her days off, she babysits her granddaughters. She has 4 grown children- all married- and 4 granddaughters. During her spare time she likes to do cross-stitch, go to Bible study, and collect salt and pepper shakers (she has more than she can count!). You can find her in our office every other Monday.
Dee Nimmo, RDA
Dee is a native Californian, raised in Pico Rivera and relocated to Orange County. She received her dental education at Bryman School of National Education in 1972. Among the first assistants to take the Registered Dental Assistant exam, Dee also graduated with a teaching certificate in Dental Assisting and returned to Bryman in 1980 as an instructor for three years. With her extensive dental background, she has been a valuable asset to our practice. Dee has three grown children, Thomas, Adam, and Alida, and six grandchildren. Dee enjoys her friends, dinner parties, movies, yoga, her dogs Nylie and Checkers, and her cat Hootie.
Elizabeth Armstrong, Front Desk and Administrator
Elizabeth was born and raised locally in Costa Mesa. She is an alumni of Estancia High School, Orange Coast College and Cal State Fullerton where she obtained her B.A. in Psychology. When Elizabeth is not working she enjoys spending time with friends, reading and traveling whenever she gets the chance.

Appointment request

Need an appointment with a dentist in Costa Mesa ? Requesting an appointment at our Costa Mesa, CA family and cosmetic dental office is now easier than ever. Fill out the form below and we'll contact you to find a time that fits your schedule. Start your journey towards a beautiful smile with us today!
Patient Name*
Phone Number*
Email Address
Are you a current patient?
Best time(s) to call?
Preferred Appt Date
Preferred Appt Time
Describe the nature of your appointment or any other comments