Photo of Otto Y. Liao, MD

Otto Y. Liao, MD

Accepting New Patients
Offers Video Visits
25401 Cabot Road, Suite 101
Laguna Hills, CA 92653
2252.9 miles away
Medical Groups & Affiliations
Providence Affiliated Physicians, St. Joseph
Speaks: English

TLC Allergy and Asthma Associates, Inc

25401 Cabot Road, Suite 101, Laguna Hills, CA 92653

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About Otto Y. Liao

Dr. Otto Liao is an Orange County physician specializing in the treatment of allergies and asthma. His clinical interests include asthma, allergic rhinitis, eczema and food allergies. Not only does he have a busy practice with TLC Allergy and Asthma Associates, Inc., he is actively involved in the community to raise awareness of allergic diseases through local school districts, Mission Hospital’s asthma education, and outreach services for the underserved.

Dr. Liao received undergraduate degrees in Molecular Biology and History from the University of California, Los Angeles in 1993. He earned his medical doctorate in 1997 from the University of Southern California School of Medicine where he was a Dean’s Scholar. Dr. Liao completed residencies in Internal Medicine and Pediatrics at Cedars Sinai Medical Center and followed with a fellowship in 2003 in Allergy and Immunology at the University of California, Irvine.

Dr. Liao is board certified in Allergy and Immunology, Pediatrics and Internal Medicine. He is a member of the Orange County Society of Allergy and Immunology where has served in many capacities, including Treasurer, Secretary, Vice President and President. He is a national lecturer and speaker on many allergy topics and has been published in numerous professional clinical journals such as Journal of Allergy and Clinical Immunology, Pediatrics, Journal of Immunology and Annals of Allergy, Asthma and Immunology.

Dr. Liao is married with 3 children and enjoys living in South Orange County.


UCLA Critical Care Program

Medical School

Medical USC


Cedars Sinai Medical Center


Cedars Sinai Medical Center



Board Certifications
  • American Board of Allergy and Immunology, Allergy and Immunology
TLC Allergy and Asthma Associates, Inc
25401 Cabot Road, Suite 101
Laguna Hills, CA 92653

TLC Allergy And Asthma Associates - Tustin
1076 East 1st Street, Suite B
Tustin, CA 92780

TLC Allergy And Asthma Associates, Inc.
1101 Bryan Avenue, Suite B
Tustin, CA 92780

Medical Groups & Affiliations
Providence Affiliated Physicians, St. Joseph

Affiliated Locations
Providence Mission Hospital - Mission Viejo
Providence St. Joseph Hospital - Orange
Providence Mission Hospital - Laguna Beach

Clinical Interests

  • Allergen Immunotherapy
  • Allergic Aspergillosis
  • Allergic Colitis
  • Allergic Contact Dermatitis
  • Allergic Disorders
  • Allergic Esophagitis
  • Allergic Gastroenteritis
  • Allergic Granulomatosis
  • Allergic Pneumonitis
  • Allergic Rhinitis
  • Allergic Wheezing
  • Allergies
  • Allergy Shots
  • Allergy Testing
  • Anaphylaxis
  • Anesthetic Agent Testing
  • Angioedema
  • Asthma
  • Breast Cancer Immunotherapy
  • Cancer Immunotherapy
  • Chronic Cough
  • Common Variable Immune Deficiency
  • Drug Allergy
  • Drug Desensitization
  • Dye Allergy
  • Egg Allergy
  • Environmental Allergies
  • Food Allergy
  • Food Allergy Testing
  • Food Challenge Testing
  • Gluten Allergy
  • High Eosinophil Count
  • Humoral Immune Defect
  • Hypogammaglobulinemia
  • Immune Deficiency
  • Immune Deficiency Counseling
  • Immune Dysregulation
  • Immunoglobulin Replacement Therapy
  • Insect Allergy
  • Latex Allergy
  • Mast Cell Activation Syndrome
  • Milk Allergy
  • Mold Allergy
  • Nasal Polyps
  • Patch Tests
  • Peanut Allergy
  • Peanut Allergy Desensitization
  • Penicillin Challenge
  • Persistent Asthma
  • Post Nasal Drip
  • Pulmonary Function Tests
  • Recurrent Infections
  • Seafood Allergy
  • Seasonal Allergies
  • Serum Sickness
  • Severe Asthma
  • Sinusitis
  • Skin Test
  • Specific Antibody Deficiency
  • Urticaria
  • Venom Allergy
  • Virtual Care