Janet Glenn, DDS, MAGD

A native Texan and lifelong Irving resident, Dr. Glenn received her undergraduate degree in Chemistry at the University of Texas at Arlington in 1981. She then graduated from Baylor College of Dentistry in 1985, with honor society membership in Omicron Kappa Upsilon. By accumulating over 500 hours in continuing education and passing an examination, she was awarded Fellowship in the Academy of General Dentistry in 2000. After completing 1100 education hours, she received a Mastership from the Academy of General Dentistry in July 2004, an honor which fewer than 1% of dentists have received. This makes Dr. Glenn one of the premier dentists in the Dallas Fort Worth area and one of an even smaller group of women in dentistry to achieve this level of expertise. This is important for patients who prefer a female dentist. She’s also a member of American Dental Association, Dallas County Dental Society (served on peer review committee), Irving Dental Study Club (past Secretary/ Treasurer), and the American Academy of Cosmetic Dentistry. Dr. Glenn’s latest continuing education classes include an aesthetic continuum at UCLA and a year-long course in Implant Dentistry.

Outside dentistry, Dr. Glenn is active in church and in her spare time you will find her reading, scuba diving, running, and playing with her grandson.

Natasha Crespo, DDS

Dr. Crespo moved to Dallas from Oklahoma in 2006. She has two undergraduate degrees - a Bachelor of Business Administration from the University of Oklahoma and a Bachelor of Biology from the University of Central Oklahoma. Dr. Crespo received her Doctor of Dental Surgery degree from Baylor College Of Dentistry in 2010 with honor society membership in Omicron Kappa Upsilon. She completed an Advanced Education in General Dentistry residency in June 2011, where she received advanced training in multiple specialty areas, including oral surgery, implants, and cosmetic dental procedures.

She is a member of the American Dental Association, Dallas County Dental Society, the Academy of General Dentistry and the Academy of Cosmetic Dentistry. She is currently working on a Fellowship in the Academy of General Dentistry.

In her spare time, Dr. Crespo enjoys dancing, watching movies, reading, outdoor activities and playing with her two dogs.

Sandra Sieber, DDS

Moving to Texas in 1976 as a child, Dr. Sieber considers herself a Texan. She moved to the Dallas area in 1984 after graduating from Texas Tech with a Bachelors of Science Degree. Go Red Raiders! She then received her Doctorate of Dental Surgery in 1989 from Baylor College of Dentistry and has now practiced in Irving, Texas for over 20 years.

A member of the American Dental Association, Texas Dental Association and now a member of Gentle Dentistry of Las Colinas, she is looking forward to sharing some of the newest dental technology with her long time patients and friends as well as new patients.

Her weekends are usually spent with her husband and two boys. They all enjoy traveling, four wheeling, sailing, kayaking and movies.

Monica Bazan, DDS, PC

Also a native Texan, born and reared in Houston. Dr. Bazan is a periodontist, a specialist in treating gum disease, performing periodontal plastic surgery and providing services in dental implants. Dr. Bazan completed her undergraduate studies at the University of Dallas and received her Doctorate of Dental Surgery at Baylor College of Dentistry in 1998. After graduation, she attended a two-year general dentistry residency at the University of Connecticut School of Dental Medicine, before receiving her specialty certificate in Periodontics at the University of Maryland, Baltimore College of Dental Surgery in 2003. Dr. Bazan is a member of the American Dental Association, American Academy of Periodontology and the Academy of Osseointegration. She has also received the prestigious certification by the American Board of Periodontology.

Dr. Bazan enjoys traveling, reading medical murder thrillers and romance novels.

David L. Roberts, DDS, PA

Dr. Roberts received his Doctor of Dental Surgery (D.D.S.) degree from the University of Illinois Dental School. He then spent two years in a dental residency at the University of Texas Health Science Center in San Antonio. During this residency, he received training in dental and implant surgery, as well as sedation procedures.

Dr. Roberts has been practicing dentistry in Dallas since 1987. He was awarded the “Young Dentist of the Year” in 1990 for Dallas County. He is a Fellow of the American Association of Hospital Dentistry (F.A.A.H.D.). Dr. Roberts served on the NTDS in 2005-2006. He is currently serving as an adjunct assistant professor at the University of Texas Health Science Center at San Antonio and lectures in the area of general dental surgery, as well as in the area of prevention of and preparation for medical emergencies in the dental office. Visit Dr. Roberts Web Site

Lizbeth Arellano

Liz is a registered Dental Assistant and is certified for Nitrous Oxide Monitoring and CPR. She graduated from Collin County College in 2010 with a certificate from Careers Foundation. Liz was born in Cuerriavaca, Mexico and loves going back to visit family. She loves spending time with her husband and two dogs, Bevo, a maltese and Yuniz, a chihuahua.

Vanda Burns

Vanda was reared in Irving and has been with Gentle Dentistry of Las Colinas since July 2011. She is a patient office assistant. In her free time she loves gardening, watching movies, traveling and spending time with her husband.

Cristy Burk-Stephenson

Cristy works part-time as a hygienist at Gentle Dentistry of Las Colinas. She is from South Texas, and she is a graduate of UT Health Science Center in San Antonio. She enjoys people and helping them achieve good oral health! Cristy loves the Lord and her family (hubby, children and grandson). She also likes real estate investing and traveling when she can.

Diana Casey

Our part-time Hygienist, graduated from Texas Tech University with a Bachelor of Science in 1998, then in Dental Hygiene from Baylor College of Dentistry in June 2000. Diana is married and living in Grapevine with her husband, two children, and Labrador Retrievers.

Bridget Ducote

Our Hygiene Coordinator who is also a registered dental assistant, was born in New Orleans. Being a retired army wife, she has traveled to many exciting places, such as Germany, Washington, Louisiana, Mississippi and Texas being her final stop. She enjoys spending time with her family, riding bikes and listening to music.

Karen Eastman

Karen was born in El Paso, Texas and joined Gentle Dentistry of Las Colinas in 2011. She is a registered dental assistant and has worked in dentistry since 1989. Karen lives in Haslet and enjoys spending time with her husband.

Karen Evans

Our hygienist, Karen, is a native Texan from the Denton area. She received a Bachelor of Science degree in 1985 from TWU. Karen has always loved the dental field and is cross trained in dental assisting and front office. Karen has one son, Colton, whom she enjoys spending time with. She also loves being at her ranch and dancing.

Sheri Hill

Sheri, one of our hygienists, graduated from Hill College in Hillsboro with a degree in Science in 2000. She then attended the University of Texas Health Science Center in Houston where she earned her Dental Hygiene degree in 2002 and has been working with Dr. Glenn ever since. Sheri is married and has two daughters.

Maggie Hofmeister

Maggie has been with Gentle Dentistry of Las Colinas since September 1996. She graduated in 1982 from Marquette University in Milwaukee, Wisconsin with a Bachelor of Science in Dental Hygiene and has worked in dental hygiene ever since. She was born in Madison, WI and has worked in Wisconsin, Indiana, Tennessee and Texas. Maggie is married and has three sons.

Noe Jaramillo

Noe was born and reared in South Texas. He went to High Tech Institute for dental assisting and has been an assistant with us since 2007. With aspirations to become a dentist, Noe is attending the University of Texas at Arlington. He enjoys spending time with his son, Adrian, and his wife Dulce.

Rachel Knowles

Rachel was born in Irving and has been with Gentle Dentistry of Las Colinas since April 2008. She is a registered dental assistant and graduated from Dental Careers Plus in 2004. She lives in Mesquite and enjoys spending time with her handsome husband and beautiful daughter, watching her husband play softball and going to football games.

Denise Martinez

Our Practice Finance Administrator has been with Dr. Glenn since March 1998. This native Texan attended North Lake College for two years and has prior experience in customer relations. Denise enjoys spending time with her husband and son, golfing, boating, shopping and seeing movies when she is not chasing her cat and chocolate lab.

Jason Morgan

Jason Morgan is a graduate of Texas Woman's University with a MA, and Stephen F. Austin State University with a BFA. He is a former teacher who has taught at the college, high school and middle school level. He is married and has one son and a daughter on the way.

Pamela Pruitt

Pamela was born and reared in Irving, and still lives here with her son and daughter. She is a 2008 graduate of ATI Career Training Center. Pamela enjoys spending time with her children and her large, very close family.

Robyn Walsh

The practice and insurance administrator has been with Dr Glenn since January 1994 and working in dentistry since 1979. Robyn graduated from El Centro College with an Associate Degree in Applied Arts and Sciences and is a nationally certified dental assistant. Robyn is married with a daughter, son, daughter-in-law and precious granddaughter.