Meet The Team


Maria Olmedo

Office Coordinator

I have been with the Columbus Kids Dentistry team over than 6 years. I'm the Office and Patient Coordinator, I enjoy working with children and helping Spanish-speaking parents. In my free time I love spending quality time with family, husband Rogelio, my son Rogelio Jr., and 2 daughters Bianca and Andrea and I love going to the movies.


Karla Contreras

Insurance Coordinator

Karla has been working in the dental field for 3 years. Working in the field has encouraged her in becoming a hygienist and will be enrolling in the Wharton County Dental Hygiene program. One of the things she enjoys about dentistry is getting to know the patients and helping them feel at ease. She will also be assisting you with any insurance questions you may have. Her goal is for patients to achieve healthy beautiful and confident smiles. Away from the office she enjoys crafting, baking and family time with her husband.


Ruth Galvan

Dental Assistant

I have been in the Dental field since 2012, and joined the team in 2014. I am bilingual, Certified in Coronal Polishing, Pit & Fissure Sealants, Nitrous Oxygen Monitoring, CPR, and PALS. I enjoy helping parents understand the importance of the Oral Health of our kids. I feel blessed to be here and being part of a team making beautiful smiles. Outside of work, I love spending time with my husband, my daughter Magaly, my son Jonathan, and going shopping!!


Rosa Tovar

Dental Assistant

I was raised in Columbus,Texas and graduated from Columbus High School. I've had the pleasure of being part of the Columbus Kids Dentistry team since June 2016. I attended Dental Assisting Option in La Grange, Texas. I really enjoy working with kids and being able to translate to patients and parents. In my free time I enjoy going to the movies and spending time with my family. I am fortunate to have this incredible opportunity in the dental field. I'm looking forward to many more years!


Maria Corona-Hernandez

Dental Assistant

Maria has been in the dental field since 2016 and joined Columbus Kids Dentistry and El Campo Kids Dentistry in 2017. She is bilingual and enjoys working with children. She loves making them smile and feel comfortable when they are nervous. She is happily married to Michael and two boys, Michael Jr. and Alex. In her free time she likes spending time with her family and from time to time reading a good mystery book. 


Shaun P. Willis, D.M.D.

Owner Dentist


Matthew R. Strepka, D.D.S.

Associate Dentist


Philip Lin, D.D.S.

Associate Dentist


Hale McDaniel, D.D.S.

Associate Dentist


Lisa McGlone, D.D.S.

Associate Dentist


John Shepherd, D.D.S.

Associate Dentist


Shernique Wallace, D.D.S.

Associate Dentist


Office Location

  • columbus
  • 106 Shult Drive Suite A & B
  • columbus, Texas
  • 78934
  • Map & Directions
  • Call: (979) 733-8844