3905 National Drive, Burtonsville, MD 20866, 301-421-4000

The brief descriptions below are designed to familiarize you with our staff's training, professional credentials and work experience.


John Evans, DDS.,PA

Dr. John Evans graduated from University of Mayland Dental School in 1976. He then entered the United States Army active duty where he completed his general dentistry training. This has given Dr. Evans the benefit and experience as a general dentist for 9 years.  He went on to earn his Advanced Periodontal Certificate and his Board Certification in Periodontology.  He retired after 21 years as a  FULL COLONEL (and a Periodontist)  in the United States Army. He has been working in his private practice in Periodontology for 21years.



Debbie Coale, Office Manager, CDA , DRT    

Debbie has been part of the dental field for 33 years as a Certified Dental Assistant, Certified Radiation Technologist and as an Office Manager. She has been working with Dr. Evans office since 1999. Her tasks are processing dental insurance, billing, finances and assisting the doctor with patients as needed.  Any questions regarding procedures or insurance questions please feel free to ask. 


Maggie Yetter, Front Office

Maggie has been in the dental field for 20 years as the friendly, smiling face when patients first arrive. She has been with Dr. Evans' office since 2002 .  She will help you in anyway possible to schedule appointments, answer questions about treatment or insurance.



Darrielle Stickler-Gatson, RDH              

Darrielle has been a dental hygenist for 9 years and graduated from University of Maryland with her B.S. degree in Hygiene. She has been with Dr. Evans' office since 2011. She is Dr. Evans' partner in stabilizing our periodontal patients after they have gone through initial treatment and have entered into the periodontal maintenance program.  She has been a wonderful asset to our office.