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Meet the Team

Dr. Marcus Whitmore

DDS

Dr. Marcus Whitmore is a dedicated and compassionate dentist committed to providing exceptional oral health care in a comfortable and patient-focused environment. With a passion for helping patients achieve healthy, confident smiles, Dr. Whitmore combines advanced clinical skills with a personalized approach to dentistry.

He earned his Doctor of Dental Surgery (DDS) degree from Baylor College of Dentistry, where he developed a strong foundation in general, restorative, and cosmetic dentistry. Throughout his career, Dr. Whitmore has pursued continuing education and training to stay at the forefront of the latest techniques and technologies in the dental field. He completed Advanced Esthetic Dentistry in 1993, Fellow of Aesthetics Academy in 2002 and Bio horizons and Implant Pathway in 2022.

Dr. Whitmore’s philosophy of care centers on patient education, prevention, and individualized treatment planning. He takes pride in building lasting relationships with patients and empowering them to take charge of their oral health. His areas of expertise include preventive dentistry, restorative treatments, cosmetic enhancements, and comprehensive family dental care.

When he’s not in the office, Dr. Whitmore enjoys spending time with his grandkids, golfing and he is a true Texas Rangers fan! He is proud to serve his community and is passionate about making a positive impact both inside and outside the dental office.

Dentist

Dr. Roberts’s practice is primarily focused on extracting wisdom teeth and on placing dental implants—both done safely and comfortably using IV (moderate) seda on. During the course of his career, he has treated over 30,000 patients. Dr. Roberts received his Doctor of Dental Surgery (DDS) degree from the University of Illinois Dental School in 1985. He then spent two years in a dental residency at the University of Texas Health Science Center in San Antonio (UTHSCSA). Dr. Roberts has been practicing dentistry in Dallas since 1987 and received the “Young Dentist of the Year” award in 1990 from the Dallas County Dental Society (DCDS). He also served on the DCDS board of directors from 1992-1996 and as president of the North Texas Dental Society in 2005-2006. Currently, he is a Fellow of the American Association of Hospital Den stry (FAAHD).

Additionally, Dr. Roberts served for over a decade as an adjunct assistant professor at the UTHSCSA, and he lectures nationally in the areas of dental surgery and IV sedation. Throughout his career, he has actively advocated for improvements in both dental safety and access to care in numerous venues. He also co-founded the Koerner Center for Surgical Instruction, which provides continuing education training courses in oral surgery to dentists across the country.

Dentist

Dr. Borgman has been practicing dentistry in Irving, Tx since July 1998. He provides each patient with an individualized comprehensive treatment plan that will meet the patient’s needs and esthetic goals relative to their goals, expectations, and financial needs.

Dr. Borgman received his undergraduate degree in Biology from the University of Texas at Austin in 1983. He graduated from the honors program at the University of Texas Health Science Center Dental School in San Antonio in May 1987. He has received many honors and recognitions and has been awarded membership appointments for excellence and achievement.

Dr. Borgman enjoys learning and is committed to continuing the advancement of his professional dental training. He has completed many courses and certifications over the years and has taught several dental courses to dental study groups, dental laboratories and at the Dallas Midwinter Dental Meeting and National Leadership meetings for SmileBrands (DSO).

Dr. Borgman enjoys being active in the community. He has served on the advisory board at Irving National Bank and has held several volunteer positions for school functions and community organizations including local health fairs and school booster functions. Dr. Borgman feels that giving back to the community is an important part of our philosophy at Las Colinas Dental Care.

Over the years, we have regularly donated services for school, church, and community functions and look forward to the opportunity to do so.

Spending time with family and friends is also an important part of Dr. Borgman’s life. He is married to Tammie White Borgman and has two daughters, Reagan, and Maddison Borgman. Regular backyard cookouts with their dogs as well as a few friends fill most weekends for Dr. Borgman and his family. When he is not doing dentistry, you can usually find him behind a guitar playing music with friends or with his local band, The Stracks. Dr. Borgman co-founded the 6 piece 70’s – 80’s Cover Band and they have been entertaining people for 17 years in the DF W metroplex and have played everything from local bar and grills to the Cotton Bowl for the 2020 Dallas Winter Classic Hockey Game. He is also the CEO and one of the original founders of Right Ear Media Group, and its subsidiary Right Ear Audio, an artist development, and Audio/Video Content Production company.

Hygienist

Natalie is a dedicated and detail-oriented dental hygienist committed to providing compassionate, high-quality care to every patient she serves. With her calm and personable approach, she strives to create a positive experience that fosters comfort and trust. She is especially passionate about patient education and takes the time to explain treatment steps clearly and thoroughly. Whether reviewing home care techniques or discussing a treatment plan, Natalie ensures that patients feel informed, supported, and confident in maintaining their oral health.

Her goal is to make every visit welcoming and reassuring—regardless of age, background, or dental history—while keeping the focus on long-term wellness and prevention. Outside of the office, Natalie enjoys spending time with her husband, their two dogs, and two cats. She also has a love for travel and looks forward to exploring new places whenever she can.

Office Leader

Becca began her career in dentistry in 2003 and has since gained years of valuable management experience. She also holds a Care Credit Certification.

In her role, Becca is dedicated to creating a positive and welcoming environment for both patients and staff. She encourages open communication, problem-solving, and professional growth while ensuring patients feel cared for and valued throughout their visits.

What Becca loves most about dentistry is building meaningful relationships with patients and witnessing the positive impact compassionate care can have on their confidence and overall health. She enjoys working alongside a dedicated team that shares her passion for helping others.

Her personal philosophy is rooted in kindness, respect, and understanding. She believes every patient deserves to be listened to, supported, and treated with genuine care.

Outside of work, Becca enjoys traveling and spending time with her husband, children, and grandchildren. She is active in her church community and loves watching her grandkids play sports, gardening, and discovering new places to explore.

Favorite Quote: “People may forget what you said, but they will never forget how you made them feel.” – Maya Angelou

Ready to Transform Your Smile?

If you or someone you know is currently experiencing any discomfort around their root, visit Keller Family Dental for a prompt consultation and plan of action. Our in-house Board Certified Periodontist

Dr. Seror Alrubaye

Dentist

Dr. Alrubaye is a member of the American Dental Association and certified in both Invisalign and Healthy Start. She continually participates in innovative courses to stay up to date in the exciting and constantly changing world of Dentistry. She loves doing all kinds of procedures and looks forward to always trying new things to enhance her skills.

In her spare time, Dr. Al enjoys spending time with her family. She has her husband, who is also in the dental field, and two beautiful sons. She loves to find activities outdoors with her family when the Texas weather allows.

Dr. Alrubaye has a way of making all patients feel at ease and comfortable in the dental chair.

Meet the Team

Dr. Marcus Whitmore

DDS

Dr. Dave Roberts

Dentist

Dr. Jeff Borgman

Dentist

Natalie Robertson

Hygienist

Rebecca (Becca) Casey

Office Leader

Ready to Transform Your Smile?

Dr. Seror Alrubaye

Dentist

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