Staff Directory


Hi - I am Jonna and I have worked in the dental field for over 20 years and have been in orthodontics for almost 15 years. I graduated from PCI in 1985. I am a Certified Dental Radiographer and Certified in Coronal Polishing. I enjoy being an orthodontic assistant as I have had braces myself and like to see the smiles on patient’s faces when treatment is completed. I have 3 beautiful daughters, Logan, LeAnne and Lydia. My time is mostly spent with my girls. I enjoy walking, biking and gardening and also like being inside and reading a good book. It is a joy working at Rosenthall Orthodontics with such a good team.


Greetings. My name is Sam (short for Samara), and I have had the privilege of serving as an treatment coordinator in the orthodontic field for over 26 years. I am a certified Dental Radiographer and a graduate of Ball State University. I have a degree in elementary education and enjoy the chance to educate patients and their parents about the many benefits of orthodontic treatment. I have been married to my husband, Mark, for 25 years and am the mother of a grown daughter, Megan, and the world's most beautiful granddaughter. When not in the office, I enjoy reading, serving as my church pianist and teaching my granddaughter to power-shop. Being a part of the Rosenthall team is a great experience!


Hi, my name is Stephanie, I have been working at Rosenthall Orthodontics since 2003. I have enjoyed working with a great staff and terrific patients. I graduated from Delta High School, attended Ivy Tech and completed a dental assisting course at Dental Careers Foundation. I am a Certified Dental Radiographer and certified in Coronal Polishing. I am married and have one daughter. Our family enjoys fishing, biking, swimming and vacations.


Hi my name is Kristi. I have worked as an Orthodontic assistant since 2000. I am acertified Dental Radiographer and Certified in Coronal Polishing. I love Ortho and am very excited to be a part of the team here. I enjoy spending time with my husband and my two children. I am also an animal lover and have many pets.


My name is Twila and I have been in the orthodontic field since 2003. I graduated from Harrison College in 2002 with a degree in travel management, but soon found out my true calling was a career in orthodontics. I am a certified Dental Radiographer and Certified in Coronal Polishing. I love our team at Rosenthall Orthodontics and enjoy working with my awesome coworkers. In my free time I like to take walks with my dog Ollie and read a good book.


Hello my name is Lisa. I graduated from Daleville High School in 2011 where I participated in volleyball, cross country, cheerleading, track, and softball. In 2013, I graduated from Ivy Tech as an Expanded Functions Dental Assistant. I am certified in dental radiography as well as coronal polishing and fluoride application. I have a cat named Flash and a dog named Sophie. I enjoy running and being outside. I love our team at Rosenthall Orthodontics and working along side amazing co-workers.


Hello, my name is Jessica. I graduated from Yorktown High School in 2015. In 2016, I graduated from Dental Office Training by Lynn where I received my dental assisting certificate. I am also a certified Dental Radiographer. I'm so excited to be part of Rosenthall Orthodontics and work with such an amazing team of people. In my free time I enjoy going on long bike rides and going out in the boat.