Sean W. Ericson, DDS
I am dedicated to continually enhancing my knowledge and skills in order to provide the highest level of dental care for my patients. I take great pride in building strong relationships and focusing on improving both smiles and overall oral health through treatments designed to deliver long-lasting results.
I earned my Doctor of Dental Surgery degree from the University of Iowa College of Dentistry and hold a Bachelor of Business Administration from Mount Mercy College in Cedar Rapids, Iowa. I remain committed to staying current with the latest advancements in dentistry by attending continuing education courses and lectures throughout the country each year.
Outside of the office, I enjoy traveling and spending quality time with my wife, Amanda, and our two children, Masen and Avery. I also love being outdoors, exercising, and staying active through golf, pickleball, volleyball, and fishing. I’m a big sports fan, never miss my son’s games, and have a strong passion for travel and family time.
Memberships
- American Dental Association
- Missouri Dental Association
- Northeast Dental Society
Dr. Ericson’s Team

Amanda Ericson RDH
I knew from a young age that dentistry was the field for me. At just 16, I spent a summer working as a dental assistant at a small practice in Memphis, Missouri, and I’ve loved dentistry ever since. After high school, I attended the University of Iowa, where I earned a degree in Psychology, and later completed my Bachelor’s degree in Dental Hygiene at Southern Illinois University–Carbondale.
In 2016, my husband and I moved to Hannibal with our two children to continue our careers at Hannibal Dental Group. We quickly fell in love with the community and have found it to be a wonderful place to raise our family.
One of the things I enjoy most about being a hygienist is helping brighten smiles and educating patients on how to maintain lifelong oral health—not only through good dental habits, but also through healthy nutrition and overall wellness.
When I’m not at work or busy attending my kids’ school activities and sporting events, I enjoy baking, cooking, traveling, and spending as much time outdoors as possible.

Kristen Arnold RDH
My name is Kristen and I am a registered dental hygienist at Hannibal Dental Group. I graduated from Missouri College in 2016 with my associate in applied science (AAS) degree in dental hygiene.
What I find most rewarding about my job is seeing a patient with a confident smile after treatment. Influencing patients to take control of their oral health care is something I strive for.
My hobbies include working out, running 5Ks, enjoying outdoor activities, and spending time with my husband and kids.
Jordan Smith
Dental Assistant
Kennedy Frasier
Dental Assistant
Make your appointment with Dr. Sean Ericson at Hannibal Dental Group by calling (573) 221-1227. You can also request an appointment now.