About Us


We are Here Just for You

The vision of our individualized dental care is to glorify God through the profession of dentistry.

Our mission is to improve the quality of life and health of those we serve through excellence in dental care and education. 

Core Values

Fidelity- to God, to our mission, to our patients
Innovation- in our methods and our practice
Autonomy- of our patients in their own decisions
Transparency- in all we say and do

Our Staff

Dr. Antoinette Cancelada, D.D.S.


  Dr. Antoinette Cancelada graduated from the University of the Health Science Center, School of Dentistry, San Antonio (UTHSC-SA), Texas. Her diverse accomplishments over a 25 year career include private practice, a Red Cross volunteer for the Army as a military spouse and academia as an Associate Clinical Professor for the Department of Occlusion and Restorative Dentistry at UTHSC-SA. More recently, Dr. Cancelada completed a one year Advanced Education in General Dentistry (AEGD) Residency at the University of Missouri-Kansas City, School of Dentistry in 2012. She is a member of the American Dental Association, Kansas Dental Association, Topeka Dental Society and Academy of General Dentistry and remains current with the latest dental advances. She continues to provide public service as a volunteer dentist at the annual Kansas Mission of Mercy (K-MOM). Dr. Cancelada's professional goal is to continue to provide dental health and education to the communities in rural Kansas.   

Dr. Mark Underwood, D.D.S., M.E.D.


 Dr. Mark Underwood is a board certified orthodontist. He is a Diplomat of the American Board of Orthodontists. He has been practicing orthodontics in North East Kansas for over thirty years. He provides a full range of treatment consisting of interceptive  care for children as well as a wide range of treatments for adults. Dr. Underwood is excited to see patients in St. Marys for an Orthodontic Evaluation. 

Dr. Mark Vail, D.D.S.



Brooke Woodward, R.D.H.


Brooke works as a dental hygienist at Flint Hills Dental. She graduated from Colby Community College's Dental Hygiene Program. Brooke's love for working with others and improving their lives are the drive behind her love of dentistry. Her hobbies include riding horses.

Shannell Peeters, R.D.H.


Shannell moved to Kansas from Wisconsin in 2009 and has worked with Dr. Cancelada for five years. She is licensed to practice in both Wisconsin and Kansas. She began her career in the dental field as a Dental Assistant. Because she loved working with the patients so much, she decided to go on to hygiene school. She graduated from Madison Area Technical College Dental Hygiene Program in Wisconsin. Shannell loves working in the community and interacting with all the patients. Her hobbies include spending time with her husband and nine children.

Cecilia Mangin, C.D.A.


Cecilia works as an insurance specialist and a dental assistant at Flint Hills Dental P.A. After attending two years at St. Mary's College, Cecilia began working with insurance in the front office at OrthoCincy in Florence and Edgewood Kentucky.  Cecilia enjoys helping others learn about ways to improve their oral health,  and to fully understand their insurance plans in order to maximize their benefits. Cecilia's hobbies include exploring new trails outdoors, photography, and poetry.

Donna Haynos, C.D.A.

Donna is a Dental Assistant at Flint Hills Dental. She spent several years working as a Dental Assistant for Dr. Ryan Allphin, DMD in Pittsburgh, PA. Donna is also a chemical engineer with a degree in education. She was first attracted to the dental field because she enjoys working and interacting with patients. Her hobbies include spending time with her husband, six children, and four grandchildren. She also enjoys cooking and traveling.

Kim Hohman, M.R.T.


 Kim is a Medical Records Technician at Flint Hills Dental. She has a B.A. in English from the University of Pittsburgh. Kim taught English at St. Mary's Academy for twelve years. With a background in teaching and communication, she enjoys interacting with the patients and helping them out. Her hobbies include playing tennis and traveling.  

Ellen Dredger M.R.T.


Ellen works as a Medical Records Technician at Flint Hills Dental. She is from St. Marys KS and  a recent graduate from St. Marys Academy. She has attended one year of higher education. She has worked for two years doing in-home care as well as three years in customer service. When she is not working she enjoys spending time with her family and cats. Her hobbies include photography, hiking, going to concerts, and riding her motorcycle on a beautiful day.  

Phil Haynos, M.R.T.

Phil works as a Medical Records Technician at Flint Hills Dental. He is currently a pre-medical student at Kansas State University. Phil has always enjoyed helping people in need and making a difference, and this job allows him to do that every day. He loves playing and watching sports, staying active, art, and learning.