Call: (972) 964-7500

Meet The Team



J. David Sandridge, DDS

Dr. Sandridge is aTexas native from Sherman. He graduated from Baylor University in Waco, followed by Baylor College of Dentistry in Dallas. Immediately after graduation in 1985, he came to Plano and opened his solo private practice. He and Dr. William Nicholson founded WestPark Dental Associates in 1993 near the intersection of Coit and Park. WestPark Dental moved to its current location in 2005.

Dr. Sandridge is a member of the American Academy of Implant Dentistry and actively attends regional and national meetings for his dental growth and development. Dr. Sandridge considers dental education to be an ongoing process which enables him to provide his patients with the latest dental expertise and advancements.

In 2012, Dr. Sandridge won the “Readers Choice Award” for Best Cosmetic Dentist in North Texas, and has been recognized several times by the Consumers’ Research Council of America in it’s “America’s Top Dentists” award category. 

Dr. Sandridge and his wife Terri are proud parents of three Razorbacks: Lesley, Mycah, and Carly and their dog Laney. They have welcomed sons-in- law Andrew in 2014, Jonathan in 2018, and Jake in 2021. Dr. Sandridge and Terri are proud grandparents of three grandchildren, AJ, Logan, Quinn, and have thier fourth on the way! They are members of Christ United Methodist Church in Plano. In his spare time, Dr. Sandridge enjoys being with his family, jogging, bicycling, golfing, and fishing. 


Deborah J. Thomas, DDS

Dr. Thomas is a native of Fort Washington, MD.  In  search of warmer weather and southern hospitality,  she moved to Texas about twenty five years ago to  attend Texas A&M University.

After deciding to make Texas her permanent home,  Dr. Thomas moved to Dallas to attend Baylor  College of Dentistry.  Upon graduation,   Dr. Thomas joined the WestPark team of dentists in  2000.

In Dr. Thomas' free time,  she enjoys cooking and reading her latest book club's selection. She, and her husband Doug, can often be cound on the sidelines cheering for Abigail, 18, at basketball or soccer. She and Doug also enjoy watching Logan, 15, play trombone in the Allen High School marching band. Dr. Thomas and her family live in Allen, Texas with Gizmo, their 9 year old Belgian Malinois puppy.

Our Team


Financial Coordinator

Trina was born and raised in Burbank, California. She moved to Texas with her family in 1998 because she felt like Plano would be a great place to raise their two girls. Trina's interest in dentistry began about 16 years ago when she started doing marketing for a periodontal practice. She felt most at home working with patients in the front office and has been helping on that side of dentistry ever since.

Trina takes pride in helping patients understand their dental treatment and assist them with making financial agreements to best utilize their dental insurance benefits. 

In Trina's free time, she enjoys gardening, home-improvement projects, working out, and spending time/traveling with her husband, Derek. 


Hygiene Coordinator

Kathy was born and raised in St. Louis, MO and was trained as a RN, with a BSN from University of Tulsa.  She has been married to husband, David, for 30 years. They have one son, Trenton, who graduated from Auburn University in May 2019, and now lives and works in Washington D.C..  

Kathy, although experienced as a Pediatric nurse, chose to be a stay at home Mom and was actively involved in PTA and volunteer work for many years. After recently becoming an empty nester, Kathy decided to go back to work part time and much to our good fortune, joined our WestPark dental team.

Kathy is a people person and has a love of bible study and fit camp with her church family.  Kathy and David moved to Texas in 2003 and are proud to call Texas home. According to Kathy, she and David go by the Texas motto, "we weren't born here, but we got here as soon as we could!"



Lisa is a 1987 graduate of Texas Woman’s University, with a Bachelor of Science Degree in Dental Hygiene.  She worked part-time as a dental assistant while in college, which gave her confirmation that she wanted to go into the dental field to help patients achieve healthy, beautiful smiles. 

She has been a hygienist for 32 years, with 25 of those years at WestPark Dental (’93-’99 then 2003-present).  Obviously she loves the doctors and team at WestPark.  Lisa and her husband, Steve, celebrated 33 years of marriage last October. They have 3 grown children, a daughter-in-law, and 3 grandchildren ages 5, 2, and a newborn.

In her spare time, Lisa enjoys spending time with family, involvement in their church “Church Eleven32,” being outdoors, biking, and the beach (especially Barbados where her mom is from!)



Patti  has been a practicing dental hygienist for over 30 years and has been with WestPark Dental Associates for almost 12 years .  She is a graduate of University of Louisiana of Monroe (NLU) and is a resident of Plano, Texas.

 Patti is married to husband, Kevin and they have two boys, ages 21 and 16. Between sports, competitive power lifting and playing the guitar, the family enjoys golfing and flying airplanes.

One of Patti's personal passions is reinforcing good dental hygiene habits to the elderly and hopes one day to expand her schedule to include working in local nursing homes to provide patients who are unable to travel, proper dental hygiene care.



Ashley was born and raised in Texas, While attending college as an English major, Ashley was introduced to her first dental job by her mom, who worked in the Orthodontic field for over 10 years.  While working behind the scenes, she quickly fell in love with the pace and challenges that dentistry offers, as well as, the joy of being able to help patients feel confident in their smiles.  Ashley received her RDA from the University of Texas, San Antonio Health and Science Center in December of 2011. Since receiving her RDA, Ashley has continued to advance her dental knowledge through completing additional certification programs like, Nitrous Oxide monitoring, sealants, and prophylaxis.  

You may also find Ashley in the front office helping with Insurance Verification, Patient Check-In, or helping schedule patient's appointments.

In her free time, Ashley enjoys working-out, exploring coffee shops, and baking new desserts.  She is also staying busy preparing for her upcoming wedding with her fiancé, Price. 



Leslie is a 2021 graduate of the Dallas Dental Assistant School of Plano. After she graduated from Richardson High School, her interest in dentistry was peaked by a close friend who shared her own experiences being in the field. She is excited to be a part of helping patients have healthy smiles. 

Leslie has been a great addition to the WestPark Dental team. She has brought with her excellent attention to detail and organization skills. 

In her free time, Leslie enjoys spending time with her family and friends. She has 3 sisters and a brother. This could include hiking or enjoying a local coffee shop

William Nicholson, DDS

Technology Specialist

Dr. Nicholson, one of the original founders and owners of WestPark Dental Associates, enjoyed many years at WPD building his practice alongside of co-owner, Dr. Sandridge.  He was successful in that endeavor and today continues to be loved by all with whom he forged solid and valuable relationships with during his tenure.   Upon retiring from patient care, Dr. Nicholson has moved behind the scenes to keep the infrastructure of WPD running.  He is enjoying being an employee of WPD taking care of their Computers, Compressors, and Air Conditioners etc.  If it is Mechanical or Technology based Dr. Nicholson is the one who keeps it running.  He is also enjoying retirement life with his wife Val and his two cats and says, “it doesn't get any better than that.”


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Office Location

  • Plano
  • 4105 West Spring Creek Parkway
  • Suite 502
  • Plano, Texas
  • 75024
  • Map & Directions
  • Call: (972) 964-7500