Accepting new patients · Chicago, IL

Lungs that are listened to,
not just scanned.

For the chronic cough dismissed as anxiety. The breathlessness attributed to age. The parent who needs more than a pamphlet. This is where the conversation begins.

Calm recovery room at dawn with soft light filtering through window overlooking a quiet courtyard
01 / Assessment
94%
Based on 800+ reviews
18+
Specialist pulmonologist
2,400+
Patients seen annually

Tell us how you're breathing.

Three plain questions. No medical jargon. A clearer sense of next steps — and the next available appointment slot.

Step 1 of 3 — Not a diagnosis, just a starting point.

How long have you been experiencing symptoms?

Slide to select the closest timeframe.

A few daysOver a year
1–3 months
Spirometry & PFTsCOPD ManagementAsthma & AllergySleep ApneaPost-COVID CarePulmonary FibrosisOccupational LungPediatric AsthmaVocal Cord DysfunctionBronchiectasis
R.M.
"I thought I just needed to lose weight. Turns out my lungs were operating at 60%."
R.M., 52 · COPD

What we
specialise in.

From common to complex — every respiratory condition deserves a thorough evaluation, not a rushed appointment.

COPD

Chronic Obstructive Pulmonary Disease

Progressive airflow limitation that makes breathing harder over time. Often underdiagnosed until symptoms are severe.

Occupational · Smoking · Age-related
Asthma

Asthma & Allergic Airways

Inflammatory condition causing recurrent wheezing, breathlessness, and coughing — especially in children and young adults.

Pediatric · Adult · Exercise-induced
Long COVID

Post-COVID Respiratory Syndrome

Persistent breathlessness, fatigue, and reduced lung capacity following COVID-19 infection, requiring careful rehabilitation.

Post-viral · Rehabilitation
Pneumoconiosis

Occupational Lung Disease

Lung damage from workplace exposure to dust, chemicals, or fumes. Common in welders, miners, and construction workers.

Workplace · Preventive · Monitoring
Sleep Apnea

Sleep-Disordered Breathing

Repeated breathing interruptions during sleep that fragment rest and strain the cardiovascular system.

Sleep · Fatigue · Cardiovascular
ILD

Interstitial Lung Disease

A group of conditions causing progressive scarring of lung tissue, reducing the lungs' ability to transfer oxygen.

Fibrosis · Autoimmune · Progressive

Spirometry & Pulmonary Function Testing

We use in-office spirometry to measure how much air you can breathe in and out, and how quickly. The test takes 15 minutes and gives us objective data that imaging alone cannot — the difference between 60% lung capacity and 95% is audible through a stethoscope, measurable through a spirometer.

FEV1
Forced Expiratory Volume
78% predicted
Example reading
D.K.
"Nobody had ever explained what a spirometry test actually measures. He drew a diagram on a notepad."
D.K., 67 · Pulmonary Fibrosis

A visit that
respects your time
and your lungs.

Calm clinical examination room with soft natural light and clean white walls
Typical first visit: 60–75 minutes

Longer than a standard GP appointment by design. Respiratory conditions rarely reveal themselves in 10 minutes.

01

Before You Arrive

1–2 days before

Complete your Breathing Journal entries for the past week. Avoid bronchodilators 4 hours before if possible. Wear loose, comfortable clothing.

Your Breathing Journal is the most valuable thing you can bring.
02

The First 15 Minutes

Arrival

A nurse takes your oxygen saturation, respiratory rate, and a brief symptom history. No rush. No clipboard left alone in a corner.

We read your chart before we enter the room.
03

The Consultation

30–45 minutes

A full respiratory history. Stethoscope. Discussion of your symptom patterns, triggers, and what hasn't worked before. Questions are expected and welcomed.

This is the conversation, not just the exam.
04

Pulmonary Function Tests

If indicated, 15–20 min

Spirometry and sometimes a 6-minute walk test or DLCO measurement. Results are explained the same day — not sent to a patient portal two weeks later.

You leave knowing your numbers.
05

Your Care Plan

End of visit

A written summary of findings, a clear treatment or monitoring plan, and a follow-up schedule. If imaging or labs are needed, they're ordered before you leave.

No ambiguity. You know the next step.
A.T.
"I spent two years being told it was stress. After one visit, I had a diagnosis, a plan, and my first full night's sleep in months."
A.T., 38 · Vocal Cord Dysfunction

Every breath
has a story.

Young, elderly, post-COVID, occupational, pediatric — the waiting room is full of people who were told their symptoms were something else.

R.M.
R.M., 52
Retired Welder
COPD

The morning cough had been building for years. I'd attributed it to decades in the shop. My first spirometry showed FEV1 at 58%. We started a rehabilitation plan immediately. Six months later I'm at 71% and still climbing.

Verified patient
S.P.
S.P., 34
Parent
Asthma

My daughter's asthma had been 'managed' for two years — meaning she just used her inhaler more. We finally got a proper trigger assessment. Mold in her bedroom. Problem solved in three weeks.

Verified patient
C.N.
C.N., 47
Former Runner
Long COVID

Eighteen months post-COVID and I couldn't walk a flight of stairs without stopping. Nobody seemed to take it seriously. Here they did. Structured pulmonary rehabilitation, six months. I ran a 5K last month.

Verified patient
M.J.
M.J., 61
Retired Teacher
Sleep Apnea

I'd been waking up exhausted for years. My GP said it was age. The overnight study showed 47 apnea events per hour. CPAP therapy changed my life within a week.

Verified patient
B.O.
B.O., 29
Competitive Swimmer
Vocal Cord Dysfunction

Three ER visits for what felt like asthma attacks during training. Turns out it was VCD — a completely different mechanism. The right diagnosis meant the right treatment. I'm back in the water.

Verified patient
L.H.
L.H., 71
Former Nurse
Pulmonary Fibrosis

I knew something was wrong with my lungs before any scan confirmed it. I could feel the quality of my breaths changing. This was the first doctor who listened to that description without dismissing it.

Verified patient
T.W.
T.W., 43
Construction Manager
Occupational Asthma

I assumed the coughing was just part of the job. After a proper occupational exposure assessment, we identified the specific trigger — a sealant product. Removing it from my work protocol resolved symptoms in two weeks.

Verified patient
E.V.
E.V., 8
Parent of patient
Pediatric Asthma

Every time I asked why my son needed more medication, I got a pamphlet. Here, we spent 40 minutes mapping his triggers. School, pollen, cold air. Now we manage all three instead of just reacting.

Verified patient
94%
Would recommend
< 5 days
Average wait for appointment
2,400+
Patients seen annually
18 years
Specialist experience
F.O.
"I came in with four weeks of notes. He said it was the most useful first appointment he'd had all month."
F.O., 55 · Chronic Cough

The Breathing
Journal.

A four-week symptom tracker designed for your first consultation. Record morning peak flow, daily triggers, sleep quality, and medication use. It turns vague impressions into clinical data — and makes your first appointment three times more productive.

Breathe Symptom Journal
4-week tracker · PDF · Free
Daily symptom rating (1–10 scale)
Peak flow morning & evening
Trigger identification log
Sleep quality tracker
Medication & inhaler usage
Notes for physician

No spam. Just your journal — and occasional appointment availability updates.

Before your first appointment.

List all medications, including inhalers and over-the-counter
Note when symptoms are worst (morning, exercise, night)
Bring any previous pulmonary function tests or imaging
Write down three questions you want answered
Note any family history of respiratory conditions

The first breath
of something better.

New patient appointments are 60–75 minutes. You'll leave with a diagnosis or a clear plan — not a referral to come back in three months.

840 N Michigan Ave, Suite 1200, Chicago, IL 60611
(312) 555-0184
Mon–Fri, 8:00 AM – 5:00 PM
Blue Cross, Aetna, UnitedHealth, Medicare accepted
Dr. Catherine Osei, MD — Pulmonologist and Respiratory Medicine Specialist
Dr. Catherine Osei, MD
Pulmonology & Critical Care Medicine
FCCPATS MemberBoard Certified
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