The Green Country Endodontics Team

We really eat, live and breathe endodontics and taking care of our patients. We can only do this as part of a well orchestrated team where everyone knows their role. Mrs. Cassie Newell runs the front office, meeting and greeting patients and handling billing. Dr. Johnson is the clinician performing compassionate root canal treatment.


All team members at Green Country Endodontics have combined their years of caring for patients in pain and made a commitment to excellence and personal care and compassion for each and every patient.

From the minute you schedule your appointment with Cassie, through the care you receive from her assistant and the treatment Dr. Johnson provides, the team at Green Country Endodontics wants to know you are in good hands.

Our mission is to provide the highest quality, compassionate care in a peaceful, state-of-the-art environment. It is our unconditional philosophy to provide individualized treatment.

We strive to be the best endodontic office and bring our years of experience and diversity to provide Tulsans with the care they deserve.

Cassie Newell / Office Manager


Cassie was born and raised in Tulsa, graduating from Berryhill High School in 2010. Cassie studied Dental Assisting at Tulsa Technology Center. She is interested in continuing her education as she enjoys learning new things and self-development. In her free time, she takes joy in spending time with her husband and their fur baby (a Goldendoodle) named Boz.

Cassie started as a Microsurgical Assistant with Dr. Johnson in 2014 and is now our front office super star. With her experience in endodontic treatment, she is eager to answer your questions to the best of her knowledge. Cassie communicates with our patients, coordinates their treatment, and explores the financial options available them. Cassie also communicates with our referring dentists and their staff so that we are providing the best experience possible for each patient.

With the ability to provide sedation dentistry to the most fearful patient, nervousness should not interfere with getting your dental needs to complete health. From IV sedation to general anesthesia, we can perform our work in the same office you have come to trust and where you expect quiet compassionate care.

Ask Dr. Johnson or Cassie about sedation dentistry and whether you are a good candidate for the treatment.

Ally Majors

Ally is our Lead Microsurgical Assistant who was born and raised in Beggs, OK where she graduated high school in 2009. Ally played two years of college basketball at Bacone College. In 2012 she joined the Advanced Dental Assisting School of Drumright. She has been a part of the team at Green Country Endodontics since 2013. She enjoys getting to know our patients and helping them feel comfortable in our office. Ally maintains a membership with American Dental Assistant Association and is devoted to continue her dental education.

In her spare time, Ally enjoys spending time with her husband, family, being active outdoors, and barrel racing.


Victoria Gonzalez

Victoria is one of Dr. Johnson's Microsurgical Assistants. She was born in Miami, Florida but raised here in Tulsa, Oklahoma! She played soccer as a goal keeper for 3 years at memorial high school and graduated in 2013. When not working, she enjoys spending time with her dogs, friends, boyfriend, and rock climbing! She loves Tulsa and enjoys supporting local artists and events.

Emily VanRiper

Emily is the newest Microsurgical Assistant on the Green Country Endodontics team. She was born and raised in Verdigris, graduating from Verdigris High School in 2013. Emily studied Dental Assisting at Green Country School of Dental Assisting and also attended Northeast Oklahoma A&M where she obtained her associates degree in Applied Science. While at NEO Emily was a member of the cheer squad and now enjoys coaching the Jr. High cheer squad at Verdigris Public School. In her free time she takes joy in spending time with family and friends, training her dogs Penny and Duke, and of course online shopping.



“Green Country Endodontics is very caring, gentle and their attention to detail is paramount. Dr. Eugenia Johnson and staff are amazing. Total care and extremely satisfied. Dr. Eugenia Johnson and staff take pride in their work and I couldn’t ask for better care.”


“Just so happy Dr. Johnson could save my tooth. I really didn’t want it pulled for an implant.”



“Was I lucky to be seen by Dr. Johnson or what? My dentist recently crowned a tooth and I had major pain for the next 3 days and he wasn’t working on Friday. A friend recommended Dr. Johnson and I was seen that same day as an emergency. I was so comfortable when I was being treated I actually dozed off. The folks at this office are so compassionate and caring. I will recommend Dr. Johnson to any friend who needs a root canal.”


Saint Francis