Meet Our Team

At Southwest Allergy & Asthma Associates, we bring decades of specialized expertise in adult and pediatric allergy, asthma, and immunology to the El Paso community. Guided by deep clinical knowledge and a commitment to patient-centered care, our practice delivers comprehensive diagnostic testing and advanced, evidence-based therapies tailored to your unique health needs. From managing complex immune deficiencies and chronic sinus conditions to providing targeted treatments for severe skin and environmental allergies, our goal is simple: to help you breathe easier, live comfortably, and reclaim your quality of life.

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Dr. Joe Venzor

Physician

Dr. Venzor leads our practice with extensive expertise in allergy and asthma care, providing patients with advanced, evidence-based treatment tailored to their individual needs.

Dr. Joe Venzor is an El Paso native who has practiced allergy and immunology since 1996. He earned his MD from the University of Texas Health Science Center in San Antonio (1991), completed an Internal Medicine residency at the University of New Mexico (1994), and finished an Allergy/Immunology fellowship at Baylor University (1996). He is board certified in Allergy/Immunology, a Fellow of the American College of Allergy, Asthma and Immunology, and a member of the American Academy of Allergy, Asthma and Immunology.

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Physician Assistant

Felix Barron

Felix Barron brings a patient-centered approach to allergy and asthma care, working closely with patients to develop personalized treatment plans and ensure comfortable, effective outcomes.

Mr. Felix Barron holds an M.S. in Physician Assistant Studies from Midwestern University (Director’s Award). A native of El Paso, he graduated from El Paso High School and UTEP and taught science at Ysleta High School for 10 years.

Tonia Heck

Tonia Heck is dedicated to delivering compassionate, high-quality allergy and asthma care, helping patients navigate their conditions with confidence and achieve lasting relief.

Mrs. Tonia Heck graduated from UTMB in Galveston in 2000 with a B.S. in Physician Assistant Studies and was voted Physician Assistant Student of the Year. Tonia graduated Magna Cum Laude with a M.S. in Health Professions in 2014. She is a native El Pasoan and graduate of Hanks H.S.

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Nurse Practitioner

Physician Assistant

Nicole Davis

Nurse Practitioner

Nicole Davis provides expert, patient-focused care in allergy and asthma management, combining clinical knowledge with a warm, approachable style to support each patient's health journey.

Nicole Vargas Davis graduated with a Master’s degree in Nursing from Samford University in Birmingham, AL and has a Bachelors degree in Nursing from UTEP. She is a board certified Family Nurse Practitioner and has spent the last 14 years working in the specialty field of Allergy, Asthma and Immunology. She is a native El Pasoan and graduate of Coronado High School.