Meet Our Team
Sandra Calleros, DDS
Dr. Calleros has been providing exceptional dental care to the South Bay communities of Los Angeles since 1987. A UCLA graduate, she stays at the forefront of dentistry through ongoing education, specializing in the latest technologies and minimally invasive techniques. She is passionate about helping babies thrive, particularly through her work with Infant Tongue-Tie, and is proud to be a Breathe Baby Affiliate. Dr. Calleros also excels in cosmetic dentistry and is the one of only a few certified Bioclear providers in her area. Outside of her practice, she enjoys spending time with her family and participating in community events. She values continuing to impact her patients’ health from infancy and beyond.
Gracie Castillo, DDS
Dr. Gracie Castillo is a dedicated dentist in Los Angeles who promotes overall health through oral care. Since 2016, she helps patients understand the vital role of the face, mouth, and smile in their well-being.
Dr. Castillo earned her degree in Biological Sciences at the University of the Pacific and completed her dental education at Howard University. She advanced her skills through a residency at UCLA, specializing in comprehensive dental care.
Known for her empathy and compassion, Dr. Castillo focuses on building trust with her patients. She prioritizes their comfort and overall well-being while addressing dental needs. As a lifelong learner, she stays updated on advancements in dentistry, with expertise in clear aligners and CEREC Same Day Crowns. She is also a SPEAR dentist, reflecting her commitment to advanced, personalized care.
Lyndsay Malama
Registered Dental Hygienist
Lyndsay Malama, a certified dental hygienist, is a valued member of our hygiene team. She completed her training at the West Los Angeles Dental Hygiene Program and brings a passion for helping others feel confident in their smiles. Known for her warm and encouraging approach, Lyndsay ensures that every patient leaves their appointment feeling uplifted and cared for. Her friendly and energetic personality makes her a joy to be around, and our patients truly appreciate her dedication to their oral health and overall well-being.
Marissa Heredia
Registered Dental Hygienist
Marissa Heredia, RDH, discovered her passion for dentistry at a young age and began her career while earning a Bachelor’s Degree in Sociology from California State University, Dominguez Hills. With over 20 years of experience—including her time at the UCLA School of Dentistry, where she was named Employee of the Year in 2010—she later pursued dental hygiene at West Los Angeles College, serving as class president for two years.
Now a dedicated dental hygienist, Marissa is committed to providing exceptional patient care and is an active member of the American Dental Hygienists’ Association. She plans to further her education with a Master’s in Dental Hygiene and hopes to inspire future professionals as an instructor..
Jackie Zago
Registered Dental Assistant
Jackie Zago is a skilled Registered Dental Assistant with experience in the field since the early 2000s. She began her dental career after graduating from Bryman College in Los Angeles and spent nearly two decades working in Beverly Hills. Seeking a better work-life balance, Jackie chose to join a practice closer to home—a decision she’s never regretted. Her warm, caring nature and professional expertise help patients feel at ease and well cared for at every visit.
Stephanie Estrada
Certified Dental Hygienist
Stephanie Estrada earned her Bachelor of Science in Kinesiology from San Diego State University before completing Dental Hygiene School at West Los Angeles. She has also pursued additional studies in Nutritional Therapy and Myofunctional Therapy, shaping the way she educates and collaborates with patients. She firmly believes that oral health is a reflection of overall well-being, emphasizing that achieving optimal oral health goes far beyond just brushing and flossing.
Currently, Stephanie maintains a limited dental hygiene schedule, focusing primarily on myofunctional therapy and assisting Dr. Calleros in treating infant tongue-ties and lip-ties. She finds deep fulfillment in these roles, as they allow her to help babies, children, and adults improve their health and quality of life in ways she never could have imagined at the start of her career.
Gabrielle Martinez
Dental Assistant
Gabrielle Martinez grew up in Ogden, Utah, and began her journey in dentistry right after high school, working for an orthodontist and developing a strong foundation in patient care. After two years in orthodontics, she discovered her passion for cosmetic dentistry while working alongside Dr. Calleros, where her interest in helping patients transform their smiles truly took root.
Gabrielle is certified in Radiation Safety through the Dental Board of California and continues to expand her knowledge and skills in the dental field. She loves being part of the Calleros Dental team and finds great fulfillment in witnessing the life-changing impact dentistry can have on patients' confidence and well-being. Her caring nature and enthusiasm make her a valued member of the team—and someone patients can always count on for a positive experience.
Cindy De Leon
Office Manager
Cindy has been the perfect addition to the Calleros Dental team. With decades of dental experience and an infectious smile, she brings both warmth and professionalism to the front office. Born and raised in Hawthorne, CA, Cindy attended Hawthorne High School before continuing on to San Diego State University.
She’s passionate about creating a smooth, stress-free experience for every patient, and she handles all your needs with grace and care. Whether coordinating appointments or assisting with insurance questions, Cindy’s friendly and knowledgeable approach helps patients feel right at home.
Tiffany Kindle
Patient Care Coordinator
Since beginning her career in the dental world in 2010, Tiffany Kindle brings a wealth of knowledge and a vibrant energy to Calleros Dental. She discovered her passion for dentistry early on, drawn to the power of a smile and the opportunity to help people feel confident. After earning her dental assisting certification from Everest College, Tiffany spent several years as a dental assistant before transitioning to the front office—where her personality truly shines.
Tiffany is a natural people person who loves connecting with patients and making them feel welcome and cared for from the moment they walk in. As a well-rounded team member, she effortlessly bridges clinical knowledge with exceptional front-office service.