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Our Services

Allergy & Asthma Center of Duncanville Treats Child and Adults Who Suffer From Allergy, Asthma, and Immune System Related Illness.

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Allergy Treatment

When it comes to allergies and asthma, knowing the best course of treatment is critical. Dr. DelasAlas and his team are experienced with the most advanced and effective therapy available today.

Asthma Treatment

When dealing with asthma, symptoms mostly occur because of other underlying conditions, and not all by itself. There are many possibilities of why this happens.

Testing & Diagnostics

Allergy & Asthma Center of Duncanville delivers cutting-edge technology in the area of Diagnostics and Testing. There are a wide range of testing that takes place when determining a diagnosis.

We’d love to take care of you

Thank you for choosing the Allergy and Asthma Center of Duncanville, serving the Dallas/Fort Worth community since 1987. Our providers are qualified and trained to diagnose and treat asthma and allergy conditions.

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Our Staff

We are fully staffed with skilled providers, including two Board-Certified Allergy Physicians, trained in the diagnosis and management of adult and pediatric allergic and immunologic conditions

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Harold DelasAlas, MD, PharmD, FACAAI, FAAP, FACP

Dr Harold DelasAlas is board certified in Adult and Pediatric Allergy, Asthma, and Immunology. He is a Fellow of the American College of Allergy Asthma and Immunology. He has been the medical director at the Allergy and Asthma Center of Duncanville since 2015.

Neelu Mahajan, MPAS PA-C

Neelu Mahajan is a board certified Physician Assistant who has been with the Asthma and Allergy Center of Duncanville since 2017.

Nicole Soucy, MPAS PA-C

Nicole Soucy is a board certified Physician Assistant who has been with the Asthma and Allergy Center of Duncanville since 2016.


Health Insurance

Most health insurances are accepted including most PPO’s, HMO’s, private plans, TriCare, Medicaid, and Medicare. READ MORE.

What our patients are saying about us

Dr. DelasAlas is truly amazing when it comes to asthma and allergy treatment! We knew we were at the right place from the moment we walked in. After enduring years of unresolved allergies, Dr. DelasAlas successfully went above and beyond to treat it.

If you are looking for a friendly and leading edge place that treat the whole family, your search is over!

Sandy, Dallas Patient