****Please check the POSTS below frequently for updated office information****

At Fairfield County Allergy, Asthma & Immunology Associates, PC (FCAAIA), we believe educated patients are more in control of their asthma and/or allergies. Our goal is to help you get the best care possible. That's why we strive to share our knowledge and be accessible to you. We're here to help!

Our practice has been serving Fairfield County, CT for over 50 years. Our doctors are Diplomates of the American Board of allergy and Immunology. Adult and pediatric allergy, asthma and clinical immunology with offices in Norwalk, Greenwich, Stamford, and Ridgefield.

If you have an immediate emergency, please call 911 first.



Masks in our offices

As of April 1st:


Masks will be optional in our office. If you are sick, recently exposed to someone who is sick or unvaccinated to COVID, due to the risks to young children, pregnant women, the elderly, immunosuppressed individuals, etc., we kindly request that you continue to wear a mask while in our office or consider making your appointment virtual. Thank you for your assistance.




Mitchell R Lester, MD

To the Patients of


Mitchell R. Lester, M.D.


The Partners at Fairfield County Allergy, Asthma & Immunology Associates regretfully, but joyfully announce that Dr. Mitchell R. Lester, partner will retire from the practice as of December 31, 2022.

After 20+ years with our practice. It will be strange for us to come to work in 2023 knowing that Dr. Lester will no longer be with us in the office. He has been a valued colleague and has provided quality care to families in the Fairfield County area. We remain committed to continuing to provide quality care for your family in his absence.




Flu shots will be available in all office starting on Monday October 3. Please call to schedule yours!

We will not be carrying the “high dose” flu shot recommended for patients 65 and older. We encourage those patients to seek a high dose flu shot elsewhere.

We continue to encourage ALL eligible patients to be immunized against COVID and to get all recommended boosters.

****Please check the POSTS below frequently for updated office information****

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