· The Allergy and Asthma Center of Corpus Christi | allergycorpustx.com Doctor Zhu is the best doctor! He is so profess... — Simeon C. Doctor Zhu is the best doctor! ... Dr. Zhu and his staff are friendly and knowledgeable. I have been a patient for years, and my allergies and asthma have seen measurable improvements. I even look forward to my ....