Dr. Mehrnaz Iranmehr, DDS
Dr. Mehrnaz Iranmehr completed her undergraduate degree in Biology at the University of Texas in Dallas in 1999, and continued on to Baylor College of Dentistry, where she earned her Doctor of Dental Surgery degree in 2003. While attending dental school, she received a Dentistry Academic Scholarship, the General Dentistry Program Excellence Award, and an Outstanding Achievement in Operative Dentistry award.

Dr. Iranmehr is an active member of Plano Rotary. She loves teaching, and currently holds the position of Clinical Assistant Professor at Baylor College of Dentistry, where she teaches chairside practice to prospective dentists. She actively seeks to advance her knowledge of dentistry, striving to stay up-to-date on leading edge techniques and treatments through continued coursework, walk-through hands on experience, and instruction with other dentists.

Dr. Iranmehr was born in Tehran, Iran, and spent her early years in Germany prior to moving to the United States. She has been a resident of Plano, Texas for over twenty years. She is the proud mother of a prospective dentist, currently attending dental school at Baylor. When she is not busy with dentistry and other responsibilities, she enjoys spending time with her family and travelling.

When she began her formal education, Dr. Iranmehr made a commitment to excellence which she continues to pursue to this day. She goes above and beyond the call of duty to ensure that every patient’s experience is comfortable and enjoyable. She is known by her patients for her friendliness, compassionate care, and her willingness to listen closely and provide explanations for all aspects of dental care.

Meet Our Team

Our staff here at Preston Family Dentistry are dedicated to making sure that you receive quality dental care. We love our patients and want to provide you with the best dental treatments possible. Give us a call today or stop by our office in Dallas, Texas to meet us and schedule an appointment with our dentist!

Sarahi Hernandez – Office Manager
Sarahi has been with our practice since 2009. She helps our patients acquire quality dental care, and ensures that our office always runs smoothly and efficiently. She loves our dental team, saying that “We share the same principles and we look out for each other, this is our second home.” She is a people person, and loves helping every patient that comes into Preston Family Dentistry. Sarahi is always making sure that we have a relaxed and friendly environment. Sarahi is married and has three daughters. She is very busy as a mother and enjoys crafting and cooking. She is also a children’s teacher at her church.

Ruby Garcia – Dental Assistant/Insurance CoordinatorRuby has been with us wince 2010, and is certified as an RDH, and in CPR. She loves working with our dental family, and helps our patients understand their dental insurance benefits. With her experience as a dental assistant, she is able to help patients whenever needed and keep our practice working smoothly. She is very compassionate, and loves helping people.

Ruby and her husband, Andres, have three sons. She is active in her church. She loves music, leads a choir, and plays the piano.


Anahita Rostami – Dental Assistant
Anahita has been with Preston Family Dentistry since 2008. She earned a Bachelors degree in Industrial Management in Tehran in 1994, and her RDA in 2008. She loves interacting with our wonderful patients to help improve their oral health. She is always smiling and has a positive attitude towards all life experiences. Anahita is happily married to her husband, Feridoun. They have two children, a daughter and a son and a fur son named Zeus. She loves to read and to cook for her family.

Kristin Kreymer, RDH – Dental Hygienist
Kristin has been with Preston Family Dentistry since April 2014. She has a Dental Hygiene Degree, and is a certified Holistic Practitioner. She loves the caring, family atmosphere of our practice, and the emphasis on teamwork. She enjoys helping bring out every patient’s beautiful smile by providing dental care and educating them about gum health. Kristin loves children, and enjoys helping them improve their dental hygiene and enjoy their visits to the dentist. She looks forward to seeing every patient and getting to know them.

Kristin married her husband, Chris, in 2012, and they have a dog named Kodiak. She loves the outdoors, camping, hiking, reading, and yoga.


Jenny Hau, RDH – Dental Hygienist
Jenny joined our dental family in 2015. She earned her degree at the University of Texas Health and Science Center in San Antonio, where she graduated in 2012. She enjoys working with her co-workers and loves being able to make a difference in a patient’s life by providing education about oral health and tools to help improve their health. She has a very gentle touch and is dedicated to perfection when providing dental cleanings. Jenny is married to her husband Lee and in her spare time she enjoys playing with her beagle named Joey, reading, traveling and is a foodie.