Meet Our Skilled Team of Dental Experts

Welcome to Our Practice – Where Your Dental Health is Our Passion, and Our Doctors are Your Partners.

Meet the Dentists

Our team of experienced dentists is committed to enhancing your smile and overall oral health.

Get to know our dentists, their qualifications, and their commitment to delivering personalized dental solutions for you and your family. Meet our dentists and discover the expertise, care, and professionalism that set us apart as your trusted oral healthcare providers.

Richard Ramirez, DDS


Dr. Richard Ramirez was born and raised in Houston where he graduated from Strake Jesuit College Preparatory. He then attended St. Edwards University in Austin for his undergraduate studies and received his degree in 2002 for his Doctor of Dental Surgery from The University of Texas Health Science Center in San Antonio.

Dr. Ramirez has been practicing dentistry in the Dallas, Fort Worth area for over 15 years. He enjoys spending time with his wife and three children as well as exercising. Dr. Ramirez continues his education by taking yearly classes so that he can learn the latest trends and techniques to continue providing the best treatment for his patients.

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Peter Grumbos, DDS, FAGD


Dr. Peter Grumbos was born in Detroit Michigan, but decided he wanted to be a Texan for the rest of his life. He graduated from the University of Detroit School of Dentistry in 1971. Prior to relocating to Texas, his practice was located in Mt. Clemens Michigan where with hospital privileges at St Joseph West Hospital, he treated Special Needs Children and Adults.

Dr. Grumbos is an active member of the Academy of General Dentistry and received his Fellowship from the Academy of General Dentistry in July 2004. Dr. Grumbos also lectures in orthodontics and practice management.

Dr. Cal Ferrari Martin


Dr. Martin began his undergraduate education at the University of California at Berkeley, graduating with a degree in Integrative Biology.

He then attended the prestigious University of the Pacific Arthur A. Dugoni school of dentistry in San Francisco. He continued at the University of Oklahoma for his orthodontic residency, receiving his Masters of Science degree upon graduation.

In 2015, Dr. Martin became board certified by the American Board of Orthodontics, a distinction held by less than 35% of orthodontists.

He is a member of numerous professional associations and regularly attends continuing education courses in order to remain up to date on the latest information in his field.

When he’s not in the office, Dr. Martin enjoys cycling, skiing, hiking, and spending time with his family.

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Gentle Dentistry of Las Colinas

Your smile is our priority, and we are dedicated to helping you achieve and maintain optimal oral health. Schedule your appointment today and discover the difference of Gentle Dentistry of Las Colinas.