Patrick Koo, MD
Erlanger Pulmonology and Critical Care
Pulmonology
- Address
- 979 E 3rd St Suite C-735, Chattanooga 37403
- Telehealth
- Not listed
- Medicare
- Not listed
- Medicaid
- Not listed
Last verified Oct 2026 Report a correction

31 listed in Chattanooga, TN · Listings last verified October 2026 · How we vet listings
We list 31 pulmonologists, or lung doctors, in the Chattanooga area, most of them in Chattanooga and Cleveland. All are physicians (MD or DO), shown with the practice's phone number, address and Google rating where we could match one. Use the filters to narrow by city, telehealth, Medicare or Medicaid.
Erlanger Pulmonology and Critical Care
Pulmonology
Last verified Oct 2026 Report a correction
Erlanger Pulmonology and Critical Care
Pulmonology
Last verified Oct 2026 Report a correction
Blue Ridge Pulmonary Medicine
Pulmonology
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Pulmonology
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Erlanger Pulmonology and Critical Care
Pulmonology
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CommonSpirit Medical Group - Pulmonary Care - Chattanooga
Pulmonology
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Pulmonology
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Pulmonology
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CommonSpirit Medical Group - Pulmonary Care - Chattanooga
Pulmonology
Last verified Oct 2026 Report a correction
The Center For Pulmonary & Sleep Disorders
Pulmonology
Last verified Oct 2026 Report a correction
Pulmonology
Last verified Oct 2026 Report a correction
Our Chattanooga listings cover the Tennessee side of the metro: Hamilton County, Bradley County and Marion County. Providers in North Georgia, such as Fort Oglethorpe, Ringgold and Dalton, are not included.
Specialist care here runs mainly through Erlanger and CommonSpirit, with Parkridge also in the listings. Galen Medical Group is a large local group for GI and women's health. Mental Health Cooperative, Centerstone and Volunteer Behavioral Health Care System provide community mental health care.
Most listings are in Chattanooga, including Hixson and Ooltewah. Cleveland in Bradley County has the second-largest group, so check there first if you live east of the city. If you live in Marion County or the Sequatchie Valley, Jasper has a few listings. Otherwise, plan on driving into Chattanooga.
Lung care in the area comes mainly from CommonSpirit's pulmonary practice, Erlanger Pulmonology and Critical Care and Blue Ridge Pulmonary Medicine. Most offices are in Chattanooga, with a few in Cleveland. Lung doctors often treat sleep problems too, and The Chattanooga Sleep Center also appears in our listings.
Nearby: Knoxville, TN · Nashville, TN
A pulmonologist is a doctor who diagnoses and treats conditions of the lungs and airways. People see one for asthma that's hard to control, COPD, a cough that won't go away, lung nodules found on a scan, pneumonia that keeps coming back, sarcoidosis, pulmonary fibrosis and sleep apnea [2]. Most people see one after a referral from their primary care doctor.
Start with the kind of care you need. Many pulmonologists also work in other areas:
If you're not sure, a general pulmonologist is the right first stop. They'll refer you on if you need a subspecialist.
Check credentials. The American Board of Internal Medicine certifies doctors in pulmonary disease, critical care medicine and sleep medicine. You can look up any doctor's certification for free on the ABIM website [1]. Our listings show the credentials doctors report in the federal NPI registry, but we don't verify board certification.
Ask about testing. Most lung care starts with tests. Ask whether the practice does breathing tests (pulmonary function tests) and sleep studies in the office, or sends you elsewhere. For sleep apnea, ask if they offer home sleep tests.
Know if you qualify for lung cancer screening. Experts recommend a yearly low-dose CT scan for adults ages 50 to 80 who have a 20 pack-year smoking history and still smoke or quit within the past 15 years [3]. Medicare covers this screening once a year for people who qualify [4].
Confirm insurance before you book. Practices change the plans they accept, so call the office or check your insurer's directory. HMO plans usually need a referral first. Medicare Part B covers medically necessary specialist visits; you typically pay 20% of the Medicare-approved amount after your deductible [5].
Know when not to wait. Breathing trouble that comes on suddenly or makes it hard to talk, or someone who stops breathing, needs emergency care, not an appointment [6]. Call 911.
It depends on your insurance. Most HMO plans require a referral from your primary care doctor before they'll cover a specialist visit. PPO plans and traditional Medicare usually don't. Even without a requirement, many lung practices ask for your recent chest X-ray, CT scan or test results, so call ahead and ask what to bring.
Expect questions about your breathing, cough, sleep, smoking history, work and home exposures, and medications, plus a physical exam. Many first visits include breathing tests that measure how well your lungs move air. The doctor may order a chest CT, blood work or a sleep study. Bring your inhalers and any recent scans.
Many do. Sleep medicine is a separate board certification, and many pulmonologists hold it. A sleep doctor can order a sleep study, at home or in a lab, and manage treatment such as a CPAP machine. Ask the practice whether they treat sleep apnea before you book, since not every lung doctor does.
The U.S. Preventive Services Task Force recommends a yearly low-dose CT scan for adults ages 50 to 80 who have smoked at least 20 pack-years and still smoke or quit within the past 15 years. A pack-year is one pack a day for one year. Medicare covers yearly screening for people ages 50 to 77 who qualify.
Look the doctor up on the American Board of Internal Medicine's free "Verify a Physician" tool. It shows whether a doctor is certified in pulmonary disease, critical care medicine or sleep medicine. Our listings show the credentials doctors report to the NPI registry, but we don't verify certification ourselves.