Best Allergist & Immunologists in San Antonio

Expert recommended Top 3 Allergist & Immunologists in San Antonio, Texas. All of our immunologists face a rigorous 50-Point Inspection, which includes customer reviews, history, complaints, ratings, satisfaction, trust, cost and general excellence. You deserve only the best!


2414 Babcock Road, #109, San Antonio, TX 78229 Directions

Since 1988

ALLERGY, ASTHMA AND IMMUNOLOGY ASSOCIATES OF SOUTH TEXAS - Allergies, Allergy Drops, Asthma, Atopic Dermatitis (Eczema), Food, Hives/Swelling, Insect Venom, Pet Allergies, Recurrent Infections, Rhinoscopy, Rush, Sinusitis & Xolair Therapy

Dr. Joseph Diaz is the best immunologist in San Antonio. He received his medical degree from the University of Texas Medical Branch. He completed his internship, residency, and fellowship in Allergy and Immunology at the University of South Florida College of Medicine. Also, Dr. Diaz has served as a clinical assistant professor in the department of internal medicine at the University of Texas Health Science Center. Dr. Joseph is the president and medical director of Allergy and Asthma Research Center. In 1988, he was started his private practice in Allergy, Asthma, and Immunology Associates of South Texas in San Antonio. He is dedicated to caring for patients with asthma & allergies.

He has been named to the Best Doctors in America® List

License #G4980

[email protected]


Mon, Tue & Thu 8:00 am - 5:00 pm
Wed 8:00 am - 7:00 pm
Fri & Sat 8:00 am - 12:00 pm

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8285 Fredericksburg Road, San Antonio, TX 78229 Directions

Since 2009

CERTIFIED ALLERGY & ASTHMA - Allergic Rhinitis, Sinus, Respiratory Diseases Like Asthma and COPD, Skin Rashes, Food and Medication, Eczema, Contact Rashes, Nasal Polyps, Hives, Swelling, Urticaria, Asthma Management, Diagnostic Testing, Drug, Eye, Insect Sting Allergy, Eosinophilic Esophagitis & Primary Immune Deficiency

Dr. Robert Ramirez is a board-certified allergist/immunologist in San Antonio. He received his medical degree at the University of Puerto Rico School of Medicine. Currently, Dr. Robert serves at Certified Allergy & Asthma of San Antonio and is affiliated with Methodist Hospital. He has been practicing in 17 years in the field. Also, Dr. Ramirez specializes in Internal Medicine. Dr. Ramirez provides compassion and respectful care with patients who suffer from allergy, asthma, and immunology issues. He has clinical interests in many forms of allergic and immunologic diseases. He has been serving both adults and children in San Antonio.

2018 Super Doctors: Texas Rising Star, by the Texas Monthly magazine

License #M2763

Insurance Accepted

Price: New Patient Visits $250


Mon 8:00 am - 6:00 pm
Tue 8:00 am - 12:00 am|
1:00 pm - 6:00 pm
Wed 8:00 am - 12:00 am|
1:00 pm - 5:30 pm
Thu 8:00 am - 5:30 pm
Fri 8:00 am - 1:00 pm
Sat & Sun Closed

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20650 Stone Oak Parkway, Suite 106, San Antonio, TX 78258 Directions

Since 2001

FAMILY ALLERGY AND ASTHMA SPECIALISTS - Atopic Dermatitis (Eczema), Allergic Rhinitis (Hay Fever), Asthma, Sinusitis, Angioedema (Swelling), Urticaria (Hives), Food/Drug Allergies, Immune Deficiencies, Etc), Bee & Venom Allergies (Wasp)

Dr. John Mastrovich is board certified in Allergy and Immunology. He graduated with a medical degree from Texas Tech University Health Sciences Center School of Medicine. He practices at Family Allergy and Asthma Specialists with over 20 years of experience in the field of allergy/immunology. Dr. Mastrovich specializes in the diagnosis and treatment of pediatric and adult allergic conditions. His aim is to spend quality time with patients and treat each individual with respect and compassion. He uses the most advanced in diagnostics and therapeutics to develop a specific treatment plan for each patient. Same-day or next-day consultations are available.

License #L2449

Insurance Accepted

Price: New Patient Visits $230


Mon 7:30 am - 11:30 am|
1:00 pm - 6:00 pm
Tue - Thu 7:30 am - 11:30 am|
1:00 pm - 5:00 pm
Fri 7:00 am - 11:30 pm
Sat & Sun Closed

TBR® Inspection Report