Dr. Maria San Andrés received her B.S. in Biomedical Science at Texas A&M University and her M.D. from Texas A&M Health Science Center College of Medicine in College Station, TX. She completed her Pediatric residency at UTMB. After residency, she began working at UTMB in the General Pediatrics Clinic and at the St. John's Hospital Newborn Nursery. She currently works in the outpatient General Pediatric Clinic and enjoys working with medical students and residents.

Nydia has approximately one decade of experience in caring for women infants and children. Nydia began filling the need as a float provider for RWSP in June of 2023 and is now a core OB/GYN Advanced Practice Registered Nurse caring for patients at our Texas City location.

Dr. Michael Binder received his MD from Texas Tech University Health Sciences Center in Lubbock, TX and completed his pediatrics internship and residency at the University of Texas Medical Branch in Galveston. Dr. Binder is Board Certified in Pediatrics by the American Board of Pediatrics. His clinical interests include all aspects of pediatrics and seeing his patients develop through the physical, emotional and social health through infancy through adolescence and young adulthood.

Married for 36 years to Dr. Tommy Sim, an allergy/immunology specialist in Friendswood, TX. Dr. Sim is a proud mother of 3 children; Tom, diagnosed with Autism, graduated from University of Houston in HRM, currently employed at UTMB Health Clear Lake Campus hospital; Timmy, graduated from Baylor University with a BS in Biology, currently schooling in Computer Science at UHCL; and Theresa, graduated with a BS in Chemical Engineering from UT Austin. I feel empathetic to parents with children with disability. I feel a need to share my family's story about my eldest son with Autism and maybe can inspire somebody like him to strive and succeed.

I am grateful for the opportunities that came my way. I am honored for the trust that parents have given to me to take care of their children's health. I feel rewarded when I see my patients grow up healthy and become good citizens.

Her professional associations include the Texas Pediatric Society, Bay Area Pediatric Society and the Harris County Medical Society.

She believes that good listening leads to good care and appreciates the opinions of parents.

In her spare time, she enjoys playing the piano, reading and traveling with her family.

No Biography details to display.

Jessica Miller grew up as a Coast Guard daughter and moved around a lot as a child. When her father retired while she was in high school, she set her roots in the community. Jessica attended Texas A&M University and obtained a bachelor's degree in biology in 2006, then attended nursing school at UTMB, graduating in 2009. Jessica first worked as a nurse in the hospital setting for two years and obtained her master's degree, graduating with honors in 2012.

Jessica works in urgent care and family practice as a Nurse Practitioner, as well as working in the ER for more experience. She enjoys providing care in the family practice setting and getting to know her patients and being able to see their continuity of care. Jessica has three children and enjoys spending time with her family when not working. As a child, Jessica did a lot of competitive horseback riding and continues to have a love for horses. She also enjoys exercising and spending time in the sun.

Dr. Beena Thomas joined The Children's Clinic of Clear Lake in 2006. She attended Southwestern Medical School in Dallas. She was accepted into the residency program at UTMB where she trained with Dr. Quillin. In 2000, she started her practice in the Houston Medical Center and at Texas Children's Hospital until she joined Dr. Quillin in 2006.

Dr. Thomas is board certified with the American Board of Pediatrics.  She has extensive experience in adolescent care from her years in the Medical Center. She loves all her new babies, yet her area of interest still remains in those challenging adolescent years.

Dr. Mariam Khan’s journey into medicine began with a passion for primary care, driven by the desire to build enduring relationships with patients from childhood through their golden years. While completing her medical degree at UTMB, she was initially drawn to pediatrics, and ultimately found her calling in UTMB’s Family Medicine residency program, influenced in part by her husband’s great experience within UTMB.

Dr. Khan's commitment to UTMB didn't end with her training; she chose to stay on as a practicing physician after completing her residency in 2023 and lives in the area. This decision was influenced by the camaraderie among UTMB graduates who have chosen to remain at the institution. She appreciates the stability and strong connections that come from this tight-knit community of medical professionals.

In her clinical practice, Dr. Khan's special interests lie in preventative health and evidence-based medicine, and during residency, was recognized for her dedication to compassionate care with the Arnold P. Gold Foundation Humanism and Excellence Teaching Award. She thrives on the daily challenges of her role and takes an approach involving motivational interviewing to empower her patients in managing various health issues, whether related to mental health or chronic conditions like diabetes. Her persistence and ability to connect with her patients shine through as she helps them navigate their health journey. Outside of her medical career, she cherishes family time, enjoys traveling, and has a passion for cooking.

Dr. Crystal Sierra joined UTMB Health in November 2010.  After completing her undergraduate studies at The University of Texas - Pan American in Edinburg, Texas, Dr. Sierra earned her medical degree from The University of Texas Medical Branch in Galveston in 2006. In 2009, she completed her Residency in Pediatrics at UTMB. Prior to working for UTMB, Dr. Sierra worked as a pediatrician in Clear Lake.

Dr. Sierra is board certified by The American Board of Pediatrics. She is also certified in Basic Life Support and Pediatric Advanced Life Support. She has her Texas medical license, and is a member of The American Academy of Pediatrics.

Dr. Sierra is married to Dr. James T. Sierra, a dentist in Friendswood, and they have two beautiful daughters, Gabriella and Francesca.  Dr. Sierra is fluent in Spanish and also enjoys reading and traveling with her family in her spare time.  She has enjoyed living in the area, and is excited to be giving back to the community!

Dr. Cynthia Binder joined UTMB Health Pediatric Community Based Clinics in 2002. She completed her residency in pediatrics at the University of Texas Medical Branch in Galveston where she also earned her medical degree. Dr. Binder holds a bachelor's degree from Baylor University.

Board certified by the American Board of Pediatrics, Dr. Binder enjoys providing healthcare and education to her patients and their families. Additionally, she enjoys teaching medical students and residents.

Dr. Binder enjoys all aspects of Pediatrics, but has a special interest in preventive medicine, infectious disease, and the treatment of asthma and allergic rhinitis.

Dr. Binder is bilingual in English and Spanish.