Our Staff



Dr. Thomas Safley, DDS

I am very excited to announce that a new dentist has joined our expanding practice at Arlington Dental Clinic.  Please help us by welcoming Dr. Safley to our practice.

Dr. Safley is working here part time.  Dr. Safley was a military brat until Third grade, traveling the world to new Air Force Bases. After his travels were completed he settled in Tacoma. His college years and Dental school all found him at the University of Washington. GO DAWGS!! He worked for the Puyallup Indians for two years, in their dental clinic, then opened his own practice in Bellevue. His skills grew as he serviced that community for 26 years. He loves dentistry and strives to maintain integrity in always educating and presenting his patients with the best dental options.  Dr. Safley prides himself on delivering excellent dentistry with comfort and care. He is married to Patti, a first grade teacher. They have five daughters. He also loves biking, skiing, woodworking, and family time.



Registered Dental Hygienist


Tasha graduated from Tallahassee Community College in Florida in 1998 in Dental Hygiene. After graduation she and her husband moved to Washington State where she began her career as a hygienist with Dr. Dykstra. Tasha was first employed by Dr. Dykstra from 1998 through 2003, when she abruptly ended her employment due to a family emergency. Tasha then spent the next 15 years homeschooling her 3 children. In 2017, when her daughter asked to go to private school for high school, Tasha felt it was the right time to head back into her profession. Because of the familiarity with patients and the trusted relationship with Dr. Dykstra, Tasha knew this would be the perfect place to start off again. Tasha enjoys her career and has loved the transition back into her profession. When not working, Tasha can be found on the baseball field cheering on her boys, Andrew and Adam, or hanging out with her daughter Ava, playing games or watching movies. Most people would say her greatest asset is her laugh, but she will tell you that it’s her marriage of 23+ years and her children.


We are so excited that Toni McCullough is back working with our wonderful staff.  Toni began her career in dentistry in 1984, as a high school senior she attended Sno-Isle and received her certificate in dental assisting.  She furthered her education and studied dental hygiene in Tulsa, Oklahoma.  She has been practicing dental hygiene for 24 years.  She has been filling in with Dr. Dykstra for over 20 years and joined our team as a permanent staff member in March of 2020. Toni is a native Arlingtonian and enjoys practicing in her hometown.  She has 3 grown children and 3 stepchildren.  She enjoys hiking, skiing, camping, and sailing in her free time.



Please help us welcome Kara back, our new registered dental hygienist, to our practice! Kara was previously a registered and certified dental assistant, having graduated with her associate’s degree from Bellingham Technical College in 2013. She started working as an assistant at our office in 2017 and during here time here, was accepted into the dental hygiene program at Lake Washington Institute of Technology in 2019. Kara graduated from Lake Washington with her Bachelors degree in dental hygiene in June of 2021, and now she is happily back with our office ready to provide kindness and care to our amazing patients! Her favorite part about being a dental hygienist is sharing her knowledge about oral health with her patients, getting to build trusting relationships with them, and being able to provide for them the best care possible. Kara and her husband have been married since 2014 and they have two beautiful children. They especially love being outdoors, going on vacation, and being around their families. In her spare time, Kara enjoys playing co-ed sports, golfing, camping trips, and going to Mariners games with family and friends.




Administrative Team

michelle-after-hair-doneMichelle is our administrative and treatment coordinator and has been a part of our team since 2009 and absolutely loves it! Michelle brings many years of administrative experience to her position.  Her enthusiasm and commitment encourage patients, their families and friends to come to our practice.  She enjoys spending time with her family and leads a very busy life with sports and outdoor activities including riding her horses.  Michelle is available to answer your questions and explain treatment, fees and insurance benefits.

Email: [email protected]




Tina, although she is new to our office, she brings many years of dental front office knowledge. She enjoys helping patients have the best experience possible when they arrive and when they leave their appointment. Excellent customer service is very important to her. She is a wonderful team player, always willing to help where needed.  In her spare time, she enjoys time with her family and friends, helping at Church and gardening.

Email: [email protected]

Dental Assistants

Jamie is a Registered Dental Assistant.  Jamie received her certification from Bryman in 2002. She has been in the dental field since 2001. She enjoys helping patients feel comfortable and improve their oral health. In her spare time, Jamie enjoys spending time with her husband, daughter and friends.








Crystal is a registered dental assistant who recently joined our practice in 2021, she is a native of Arlington.  Crystal grew up here in Arlington and worked at the cancer center in Everett for 9 years before moving to San Diego, CA for 4 years and changing career paths.  She graduated with her RDA from San Diego Mesa College in 2019.  Crystal has two amazing children, Josiah and Cali.  In their spare time they enjoy being outdoors, hiking and taking their dog for walks.  Crystal is so happy to be back in her hometown and working for Dr. John Dykstra.  She enjoys helping people with their dental needs and making people feel move comfortable.