What does a pulmonologist (lung doctor) do?
A pulmonologist is a doctor who treats the lungs and breathing. They treat asthma, COPD, and sleep-related breathing problems.
Last updated November 11, 2026
Find pulmonologists (lung doctors) near you
When people see one
- A cough that lasts more than a few weeks
- Shortness of breath with no clear cause
- Asthma or COPD that is not controlled
- An abnormal chest X-ray or CT scan
How it differs
Cardiologist: Heart and lung problems can feel alike. A pulmonologist treats the lungs; a cardiologist treats the heart.
Allergist: An allergist also treats asthma that has allergic triggers. A pulmonologist treats a wider range of lung disease.
On 2027 Colorado plans
Do you need a referral? On some plans. 37 of the 148 2027 plans need a referral from your primary care provider to see a specialist: Kaiser Permanente's 29 plans (you may self-refer to certain specialists) and Denver Health (Elevate)'s 8 plans (self-referral allowed for OB-GYN and outpatient mental health care). The other 111 don't, according to each plan's 2027 summary of benefits. Confirm in the plan's summary of benefits.
What a visit costs (the plan's filed "Specialist Visit" benefit, in network, before any extra savings on silver plans):
- Bronze: $100 to $140 a visit on 10 of 56 plans; on the other 46, you pay toward your deductible or a share of the bill.
- Silver: $50 to $90 a visit on 44 of 58 plans; on the other 14, you pay toward your deductible or a share of the bill.
- Gold: $50 to $90 a visit on 26 of 30 plans; on the other 4, you pay toward your deductible or a share of the bill.
In-network care costs less. Out-of-network visits on an HMO or EPO usually aren't covered except in an emergency.
In Colorado
Public records list 422 pulmonologists (lung doctors) at 140 Colorado locations.
- Denver County: 18 locations
- Boulder County: 14 locations
- Adams County: 12 locations
- El Paso County: 12 locations
- Arapahoe County: 9 locations
- Jefferson County: 9 locations
Counties with the fewest: Summit (1), Otero (1), Montezuma (1), Moffat (1), Logan (1). 29 counties have none.
Questions to ask the office
- Do I need a referral from my primary care doctor?
- Which 2027 plans and network names do you take?
- How long is the wait for a new patient?
- Are breathing tests done in the office, or elsewhere?