I enjoy practicing all aspects of Family Medicine. I am board certified in Family Medicine, and have been in practice for over 40 years. I recently joined the primary care clinic in Angleton and enjoy it very much. It reminds of the small town I grew up in, in Oklahoma. I especially enjoy the drive over along the Bluewater highway.

My wife and I moved to Galveston in 2003. We love living on the beach and visiting our grandchildren.

My name is Nyajuok Wur. I am originally from South Sudan, born in Ethiopia, raised in Minnesota and currently living in Houston, TX. My passion for medicine began at a young age and my desire to help others continues. I chose family medicine because of the variety as well as the opportunity to work with people from all ages and backgrounds.

Hobbies outside of medicine include reading mystery books, international travel, and singing.

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!

I am MBSR (Mindfulness Base Stress Reduction) certified, and a Board-certified pediatrician, with a passion for promoting well-being and mental health.

When not working with patients, I love to travel with my family and explore new cultures. I enjoy going to musical theater a passion I share with my kids. I also enjoy reading and attending book club with friends, where I can engage in lively discussion about literature and life.

My ultimate goal is to provide the best care possible to patients as they navigate through each developmental stage. I believe in being there for patients and their families during the process, offering support and guidance every step of the way.

 Provider is LGBTQIA+ Responsive

I grew up in Clear Lake myself, so I was very excited to become a part of this UTMB Clear Lake family. I attended the University of Houston – Main Campus for my bachelor’s degree, and I completed my medical training (medical school and my pediatric residency) in the large Texas Medical Center in Houston. In 2023, I moved back to Clear Lake so that I could give back to this wonderful community.

I have a wonderful husband, and we are lucky to have both our families and fur-siblings in the area. My hobbies include playing tennis (when it’s not too hot outside), playing the piano, and spending quality time with family and friends.

Pediatrics has been my calling since high school. I am blessed to have the opportunity to be able to educate and comfort patients and their family members in some of their most stressful times. I love that I get to watch these children grow from newborns into wonderful young adults and help them along the way.

Being a growing child (or even raising one) isn’t easy! Every patient brings their own story, challenges, and personality, and each of them has something to teach me. I just strive to be a positive light during their journeys and work to keep my patients safe, healthy, and happy.

Alma Chavez began her career as a licensed vocational nurse and worked with the indigent at Harris County Hospital District for 5 years. Striving to advance her skills, she received her Bachelor's of Science in Nursing from the University of Texas Health Science Center at Houston in 1999. It was then that she continued to work with the indigent spending eleven years as a specialty trained RN, providing well child exams to children of all ages. Her passion for patient care then drove her to earn her Master's of Science in Nursing from UTMB, specializing in family practice.

Alma is board certified as a Family Nurse Practitioner by the American Academy of Nurse Practitioners and joined the family of caregivers at UTMB Health Pediatrics, Texas City in 2012.

Dr. Syed K. Kazmi joined UTMB Pediatric Community Based Clinics in 1994. He is board certified by the American Board of Pediatrics. He received his doctorate from Universidad Technologica de Santiago Santo Domingo in the Dominican Republic and his masters of public health from Tulane School of Public Health in New Orleans, Louisiana.

Dr. Kazmi has a special interest in community health education and the uses of homeopathic medicines, earning a diploma in Homeopathy from Galein College, United Kingdom.

In addition to serving as the Medical Director of UTMB Health Pediatrics in Alvin, Dr. Kazmi is the Medical Director of a Houston based charity clinic. He is an active member of the community, working with the Alvin Independent School District as a consultant and as the Alvin City Health Officer.

Dr. Kazmi sees general pediatric patients and is multi-lingual in English, Spanish, Urdu, Hindi, and Punjabi.

Dr. Maria P. Nguyen joined the UTMB Pediatric Community Based Clinics in 2001. She completed her residency in pediatrics at the University of Texas Medical Branch in Galveston after earning her doctor of medicine from Saint Louis University Health Sciences Center School of Medicine in St. Louis, Missouri. She earned two bachelor's degrees from the University of California at Irvine, one in biology and one in psychology.

Dr. Nguyen is board certified by the American Board of Pediatrics. Dr. Nguyen's passion is to provide high quality and compassionate medical care.

She has special interests in asthma management and adolescent medicine.

Her dedication to educating medical students earned her the following honors: UTMB Community Preceptor Award in 2012 and Teacher of Distinction (TOP DOC) Award in 2019 and 2012.

Dr. Nguyen is fluent in both English and Vietnamese.

No Biography details to display.

Dr. Propst is a fellowship trained physician in Primary Care Sports Medicine. His clinical interests include many sports injuries, aches and pains including concussions, sprains, strains, simple fractures. Additionally, his training allows him to investigate nutritional and lifestyle factors that may predispose athletes to repetitive injuries or decrease their performance regardless of their sport.