Amy Haverty received her Bachelors of Science in Nursing from Marquette University in Milwaukee, Wisconsin in 1994. She spent five years as an RN on active duty with the Army. While in the Army, Amy worked in the Neonatal Intensive Care Unit, the Pediatrics Unit, and the Combat Support Hospital. In 1999, Amy joined UTMB Pediatric Associates in Galveston, working as Nursing Manager. She joined UTMB Pediatric Associates Alvin in 2007, after earning her Master's of Science in Nursing from UTMB, specializing in pediatrics. Amy currently cares for patients at the Friendswood Pediatric and Adult Care Clinic.

Amy is board certified as a Pediatric Nurse Practitioner. Her special interests include child nutrition and immunizations. Amy volunteers with local scouting organizations, providing medical services and training.

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.

Erika Schulze was born and raised in the Midwest in Illinois 30 minutes outside of St. Louis, MO. She completed her academic training at Goldfarb School of Nursing in St. Louis, MO. Her experience spans 16 years, which included working at Barnes Hospital as staff nurse on general medicine floor for 8 years; Pulmonary and Critical Care research at Washington University in St. Louis, MO. In 2003, Erika was accepted into graduate school at Goldfarb School of Nursing and completed Master of Science degree in Nursing with focus as an Adult Nurse Practitioner. This program was two and half years of additional medical assessment and decision training including diagnostic testing. Since completing Graduate School, she has worked in the primary care setting. She moved to Texas and started working at UTMB in January 2013.

During her time off, she enjoys her home, gardening, and time with her family and friends. She is passionate about animal welfare charities and animal fostering programs. Erika is also very passionate about the mental health of the community. She chairs a weekly support group, Nar Anon, for family and friends of those suffering from addiction.

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.

Roxanna Sanchez began her nursing career with her Bachelor's of Science in Nursing from the University of Texas Medical Branch (UTMB) graduating in 2008. Upon graduation, Roxanna went to work at the Texas Medical Center as an operating room and perioperative nurse working with children and adults. Roxanna's dedication towards her patients and passion for aiding in the healthcare of others lead her to pursue her Master's degree of Nursing. She wanted to be more closely involved in her patients' care and began her degree as a Family Nurse Practitioner and graduated from UTMB in 2012. She currently helps prepare future nurse practitioner students by being their mentor during clinical rotations.

Roxanna is board certified as a Family Nurse Practitioner by the American Academy of Nurse Practitioners, is bilingual and also a member of the International Nursing Honors Society, Sigma Theta Tau. She is a member of the Galveston Coalition of Advanced Practice Nurses.

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!

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. Corzo was born and raised in Barquisimeto- Venezuela. She received her Doctorate of Medicine from University Centro-occidental Lisandro Alvarado (UCLA) in Venezuela and completed a residency with the UTMB Health Family Medicine Residency in September 2017. During her training, she was exposed to broad clinical pathologies with the opportunity to learn and to have "full hands-on" training. Dr. Corzo found that her best teachers were and still are her patients from whom she learns from every single day. During her free time she enjoys going out and spending time with her family. Dr. Corzo is certified by The American Board of Family Medicine and is a member of the American Academy of Family Physicians.

Rosana Draper, PhD, MSN, FNP-BC is a graduate of University of Texas Medical Branch - Galveston, where she obtained her MSN as well as her PhD. Rosana specializes as an experienced board certified nurse practitioner. Her clinical interests include family medicine, healthy lifestyles and diabetes care.

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