Meet our Doctors

Excellence in dentistry begins with a careful co-diagnosis and treatment plan to establish the goals we will achieve together. Communication and long-term relationships are important to us. Let us know what is on your mind and ask questions. We want all our patients to be informed and knowledgeable about their dental health care, from treatment plans and services, to insurance coverage. We look forward to assisting you in achieving optimal oral health and a beautiful smile.

Contact us to schedule an appointment in our Houston Cosmetic & Family Dental office. We look forward to meeting you and taking care of your dental needs.


Dr. David Ashmore

• Bachelor of Science degree in chemistry from Houston Baptist University. (1978-1981)

• Attended University of Texas Dental Branch at Houston for his DDS (1981-1985)

• Practiced general dentistry downtown at 2025 Fairview in Houston from 1985-1990.

• Became owner of Westfield Dental Center in 1990

• Professional affiliations: American Dental Association, Texas Dental Association, Greater Houston Dental Society

• Resides in Spring, Texas

• Family includes: wife:Tamara, son:Matt, daughter:Katie  

• Enjoys hunting, fishing and spending time at the lake.


Dr. Jason Derr

• Attended the University of Texas at Austin for Bachelor of Arts in Biology (1990-1994) •Attended the University of Texas Dental Branch for DDS (1994 - 1998)

• Practiced dentistry at Westfield Dental since 1998

• Became a partner with David Ashmore in August 2005

• Professional affiliations: American Dental Association, Texas Dental Association, Greater Houston Dental Society, Academy of General Practice Orthodontists

• Enjoys hunting, fishing, travel and outdoor activities

• Resides in Kingwood, Texas with his wife, Paige, sons Tyler, Jacob, Luke and daughter Addison