Our Approach

The Huntington Asthma & Allergy Center was established in 1989 to provide a "center of excellence" for Huntington Memorial Hospital. The Huntington Asthma & Allergy Center has gone through several changes over the years and we feel we continue to achieve the original goal with a highly trained and professional staff.

Our goal is to provide excellent and comprehensive treatment of allergic and immunologic conditions in a caring and compassionate manner.  Dr. Reyneiro Castro and Dr. Sonal Patel look forward to serving you.

- The Huntington Asthma and Allergy Center Team!

Our Story

Meet the Team


Reyneiro Castro

Dr. Castro has been practicing medicine since 1998, after graduating from UC Davis School of Medicine. He completed a residency in Pediatric at King/Drew Medical Center.  He then went on to complete a fellowship in Allergy and Clinical Immunology at the UCLA School of Medicine.

Dr. Castro has been providing quality asthma and allergy care to the Pasadena Community and surrounding areas for the last 13 years.  He is board certified by the American Board of Allergy and Clinical Immunology and the American Board of Pediatrics.

Dr. Castro is committed to providing care to everyone in the community.  In addition to his private practice, he works with the Pasadena Community Asthma Program at Huntington Hospital to provide care to underserved populations.

Dr. Castro is also a board member of the Pasadena Respiratory Foundation and is a member of the American Academy of Allergy, Asthma and Immunology, the American College of Asthma, Allergy and Immunology, the Los Angeles Society of Asthma, Allergy and Clinical Immunology and the California Society of Asthma of Allergy, Asthma and Immunology.

Dr. Castro also enjoys volunteering in his community.  He is a board member for the local soccer league, AYSO Region 60, and coaches all three of his children in a variety of sports.


Sonal Patel

Dr. Patel is double board–certified in allergy and clinical immunology as well as pediatrics. She has recently joined Huntington Asthma and Allergy Center in Pasadena, CA. Prior to that, she was with Adventist health for 11 years. She has 20 years of experience working with the underserved. Dr. Patel initially trained in pediatrics at King-Drew Medical Center in Los Angeles. She then went on to complete a clinical allergy and immunology fellowship at the UCLA School of Medicine. She also completed a Master of Science degree in Clinical Research from Charles R. Drew University of Medicine and Science. Her clinical interests include asthma and atopic dermatitis (eczema).

Dr. Patel is the coauthor of the MommyMD Guides to Twins, Triplets, and More. She has authored many blog posts and has been interviewed for many magazine and newspaper articles on allergies and parenting. .

Dr. Patel has a strong interest in working with inner-city patients and the underserved. She has been on international medical missions to Peru, El Salvador, and Mexico. She has also served on the board for the American Lung Association in California. She is currently on the board of the Los Angeles Society of Allergy, Asthma & Clinical Immunology and the California Society of Allergy, Asthma & Clinical Immunology. Dr. Patel is a native Angelino. She currently lives in Glendale, California, with her husband and twin daughters. In her spare time she volunteers at her children’s elementary school. She is currently learning to knit and crochet. Her other personal interests include traveling, reading, movies, and dance.​

You can find her on social media @TMommyMD,  https://www.facebook.com/TMommyMD/, or  https://www.facebook.com/Dr-Patels-Allergy-Busters-126802720686886