Asthma Specialists in Fairfield County, CT
For so many in Norwalk and Shelton, asthma turns simple moments into stressful ones. That’s where we come in.
At our Allergy Center, we specialize in helping you understand your asthma, pinpoint what’s making it worse here in coastal Connecticut, and build a plan that truly fits your life.
We’re not just checking boxes or handing out prescriptions; we’re here to help you breathe easier with care that’s local, personal, and built around your needs. When you’re ready to stop worrying about the next attack, we’re ready to help.
Common Asthma Symptoms and When to Seek Help
Asthma isn’t always loud or obvious. Sometimes it whispers with mild tightness in your chest; other times it roars with full-blown attacks. We want you to know what to watch for so you’re never caught off guard.
Common symptoms include:
- Wheezing or whistling when you breathe
- Shortness of breath, even at rest
- Tightness or pressure in the chest
- Persistent coughing, especially at night
When to see us:
If these symptoms are interfering with your daily life, disrupting sleep, or making you limit activities, it’s time for expert care.
When to seek emergency care:
- Severe shortness of breath that won’t improve
- Blue lips or face
- Struggling to speak in full sentences
Local Triggers in Norwalk and Shelton, CT
Asthma doesn’t happen in a vacuum. Here in coastal Connecticut, certain local factors make breathing a bit more complicated.
Local triggers we often see include:
- High coastal humidity from Long Island Sound that can thicken the air
- Seasonal pollen bursts (oak, grass, ragweed) that spike in spring and fall
- Mold from older, damp basements or water damage in historic homes
- Air pollution along I-95 and busy local roads
We don’t just treat symptoms; we help you understand your environment. That might mean strategies like monitoring daily pollen counts, using dehumidifiers, or checking the CT DEEP air quality forecast before outdoor activities.
By knowing what you’re up against here at home, we can build a plan that truly fits your life in Fairfield County.
Our Diagnostic Approach

We believe good care starts with getting the full picture. When you come in, we don’t guess; we test and listen.
Our diagnostic tools may include:
- Simple breathing tests (spirometry) to measure airflow
- Methacholine challenge testing for hard-to-pin-down cases
- Allergy testing if we suspect environmental triggers
- Thorough review of your medical history and symptom patterns
We’ll explain every step in plain language so you know exactly what’s happening and why. Our goal is to pinpoint what’s behind your asthma and tailor a plan that feels practical and achievable for you.
Preparing for Your First Visit
We know visiting a specialist can feel like a big step. Let’s make it as smooth as possible.
Here’s how to prepare:
- Bring any previous test results or medical records
- Make a list of your current medications and doses
- Jot down your symptoms and questions so you don’t forget them
- Arrive a few minutes early; parking is available on-site at our Norwalk and Shelton locations
Expect your first visit to take around 45–60 minutes. We’ll take the time to talk things through, explain tests, and start building a plan together. Our goal is to help you feel heard, understood, and ready to breathe easier.
Why Choose Us?

Fast Testing

Custom Plans

Smart Tools

Care for All Ages
Schedule an Appointment With Our Connecticut Asthma Specialists
Whether you’re ready to schedule a visit or just have a few questions, we’re here to make it easy. You’ll find our allergy centers in Norwalk and Shelton, both conveniently located and designed with your comfort in mind.
Norwalk Office:
761 Main Ave, Suite 105
Norwalk, CT 06851
Phone: 203-870-8731
Shelton Office:
4 Corporate Dr, Suite 295
Shelton, CT 06484
Phone: 203-374-6103
Both offices offer free parking, easy highway access, and accessible exam rooms. Not sure which location is right for you? Give us a call—we’ll help you find the best fit.
What Our Clients Say
Andre’ D2025-01-14Trustindex verifies that the original source of the review is Google. Very efficient and professional care of patients. Dr. Ronan explains the procedures and answers question very clearly, easy to understand. The staff is very helpful and will make you feel at ease. Always pleasure to come back. Betsy C2024-06-10Trustindex verifies that the original source of the review is Google. I just met with Martin Ronan, PA for some antibiotic testing. I was very pleased with his service and he was personable, gentle and nice to work with. I will follow up with further testing but am happy to recommend him and this office for those seeking allergy testing or treatment. Rosa F2024-01-14Trustindex verifies that the original source of the review is Google. My daughter needed allergy testing for possible food intolerances. The front desk was so nice & Dr. Hemmer was very patient. Highly recommend! Juan P2023-08-16Trustindex verifies that the original source of the review is Google. Dr. Martin Ronan change my life! When I first stepped into his office three years ago, I had gotten so used to my allergies, asthma and my skin being in such terrible condition, I had learned to ignore it. He saw how uncomfortable I was and how my quality of life was horrible and immediately took care of me. Putting me on a regimen that changed my life and continues to follow up to see how I am doing until today. Emmanuelle A2023-05-25Trustindex verifies that the original source of the review is Google. Martin Ronan you’re excellent! I wish you the best of success! I will recommend you to family and friends. Being a good person and compassionate truly make someone their best at what they do. Thanks again for your help with my allergy!😊 Ron S2022-01-07Trustindex verifies that the original source of the review is Google. Excellent Doctor and staff !