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About Us

At Allergy and Asthma Specialist Doctors, Inc., in Pasadena and West Covina, California, the goal is to help patients live their life without symptoms holding them back. Allergy specialists Claire Smigiel, MD, and Erica Chen, MD, understand how allergies and asthma can affect your quality of life, especially when you don't know what's causing your symptoms.

The practice provides care for patients ages 12 and older. They aim to help identify the underlying cause of common allergy and asthma symptoms, like a chronic cough, stuffy nose, wheezing, shortness of breath, itchy eyes, and skin rashes.

Allergy and Asthma Specialist Doctors, Inc., performs comprehensive allergy testing, including extensive skin patch testing that’s not available at most other allergy practices.

The practice specializes in diagnosing and treating food allergies, nasal allergies, drug and insect allergies, skin allergies, and asthma. The allergy specialists identify symptom triggers and design individual treatment plans that help patients live their life without allergy symptoms.

Allergy and Asthma Specialist Doctors, Inc., also offers immunotherapy to assist with allergy relief.
For personalized and comprehensive care for asthma and allergies, call Allergy and Asthma Specialist Doctors, Inc., or book an appointment online today.


Allergy Testing

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Chronic Cough

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Food Allergies

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Nasal Allergies

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Itchy Eyes

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Skin Allergy

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Accepted Insurance

Please contact our office to see if we are in network with your plan!

Aetna PPO
Cigna PPO
Regal HMO
United Healthcare PPO

Choose Your Provider

Board Certified Allergy and Immunology Specialists

Pollen Allergies

Nasal allergies caused by pollen can be managed with medication and avoidance measures. Consult an allergy and asthma specialist doctor for personalized treatment and to improve your quality of life.

Our Locations

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The Open Payments database is a federal tool used to search payments made by drug and device companies to physicians and teaching hospitals. It can be found at
For informational purposes only, a link to the federal Centers for Medicare and Medicaid Services (CMS) Open Payments web page is provided here. The federal Physician Payments Sunshine Act requires that detailed information about payment and other payments of value worth over ten dollars ($10) from manufacturers of drugs, medical devices, and biologics to physicians and teaching hospitals be made available to the public