Michael J. Keller, MD

4.9

524 ratings Read Reviews

Northwestern Medical Group

Primary Specialty

Pulmonology

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Practice Focus Areas

This medical professional has a particular interest or expertise in:

Asthma
Chronic Obstructive Pulmonary Disease (COPD)
Chronic Thromboembolic Pulmonary Hypertension
Connective Tissue Related Lung Disease
Interstitial Lung Disease
Portopulmonary Hypertension
Pulmonary Embolism
Pulmonary Hypertension

Reasons to Schedule a Visit

This medical professional may be a good choice for you if you are looking for care for any of the following:

Abnormal pft
Allergies
Asthma
Bronchiectasis
Chronic (continuous or long-lasting) cough
Chronic (continuous or long-lasting) shortness of breath
Chronic bronchitis

Emphysema or copd
Hypoxemia
Pneumonia
Pulmonary embolism
Pulmonary hypertension
Scleroderma
Surgical clearance

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Education

Medical Education:: MD, University of Iowa Carver College of Medicine - 2006
Residency:: McGaw Medical Center of Northwestern University - 2009
Fellowships:: McGaw Medical Center of Northwestern University - 2013

Board Certifications

American Board of Internal Medicine/Critical Care Medicine - Critical Care Medicine (Certified)
American Board of Internal Medicine/Pulmonary Disease - Pulmonary Disease (Certified)

Practice Groups and Affiliations

Medical Group:: Northwestern Medical Group
Alignment Category:: Northwestern Medicine Physician Network
On Medical Staff At:: Catherine Gratz Griffin Lake Forest Hospital

Ratings and Reviews

At Northwestern Medicine, our patient’s feedback is important to us. While different care providers have their own unique strengths, we strive to be as transparent as possible with our quality of care.

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Overall Rating

4.9

4.9

524 Ratings

Reviews from Patients

100 Most Recent Reviews

Reviews from Patients

100 Most Recent Reviews

February 25, 2026

5.0

Dr, Keller listens and addressed my questions in a way that is understandable and helpful. He also helped figure out some prescriptions and got a better price.

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February 24, 2026

5.0

Professional Takes time for questions Plan of care decisions with the patient

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February 23, 2026

5.0

Dr Keller is very knolegable and has a great bedside manner. He listens carefully and answers clearly to help the patient understand.

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February 16, 2026

5.0

Dr. Keller was easy to converse with clear communication skills (I use hearing aids). As a new patient he was familiar with my medical records and did a thorough check up.

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February 15, 2026

5.0

Excellent care. Very knowledgeable.

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February 14, 2026

5.0

Same as above. Also friendly and respectful nurses

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February 13, 2026

5.0

He seems to care about his patients. He goes out of his way to communicate.

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February 12, 2026

5.0

knowledgeable, well-informed, caring

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February 11, 2026

5.0

Dr Keller after reviewing all the information from tests and patient feedback offers options to the patient for discussion and direction. He includes the patient n decision making. It goes a long way in inspiring confidence.

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February 05, 2026

5.0

Couldn't be more positive about my interactions with Dr. Keller and his staff. He's thorough and patient - answering all my questions and explaining everything in detail. Never a sense of rushing through the visit. He's a very good listener and makes me feel like we're partners in solving my issues. Sounds corny but he has major "good person" vibes. Very, very pleased with him.

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February 02, 2026

5.0

.

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January 30, 2026

5.0

Very pleasant and knowledgeable

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January 28, 2026

5.0

Dr Keller took a great history, answered all our questions, and helped come up with a treatment plan.

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January 27, 2026

5.0

I will easily give him a 10 plus but don't want him to get TOO busy so he doesn't have time to provide the time he does. I never feel rushed when I see him.

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January 18, 2026

5.0

Dr. Keller was kind and professional. Active listener who I felt understood me as a human being.

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January 14, 2026

5.0

Very generous with his time and knowledgeable

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January 13, 2026

5.0

He is thorough in examinations. He uses past records as well as current test results to proceed with the best treatment.

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January 13, 2026

5.0

Excellent care

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January 13, 2026

5.0

Like him very through

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January 12, 2026

5.0

I followed him from a previous practice. He is very easy to talk to and spends the time to listen

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December 28, 2025

5.0

He asked me easy and in-depth questions. Listened, and asked follow-up questions. He made sensible recommendations for next steps. Referred me to a specialist, and said he would help get an appointment if one was not reasonably available. I believe he is getting to the root of my problem. I feel confident in his judgement.

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December 27, 2025

5.0

Explains Professional

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December 24, 2025

5.0

He's been on top of everything since I have been seeing him.

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December 23, 2025

5.0

Listen to your needs

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December 14, 2025

5.0

Calm, kind and seems genuinely interested in the patient as an individual

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December 13, 2025

5.0

Personable and Informative. Took time to go through CT scan and answer any questions.

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December 12, 2025

5.0

He listens to me. Very patient

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December 11, 2025

5.0

I trust him and his concern for me as a patient.

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December 09, 2025

5.0

Through doctor

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December 04, 2025

5.0

He asked me a lot of questions. Took my responses into consideration when he recommended next steps. Didn't hurry. Was pleasant and professional, even when the computer acted up. Told me I could have the blood test upstairs immediately, saving me a trip.

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December 03, 2025

5.0

He was thorough in his exam gave us enough time to discuss everything that was important and even thought of ideas that other doctors did not and was very helpful in getting me a halter monitor an extra test to ease my mind about my lungs

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November 15, 2025

5.0

Very understanding

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November 14, 2025

5.0

The Dr. And staff were kind, knowledgeable, and timely!

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November 12, 2025

5.0

Dr Keller is professional and caring. He takes the time to talk with me and to explain what he recommends for treatment.

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November 11, 2025

5.0

Very thorough and listens to the patient.

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November 11, 2025

5.0

Dr Keller didn't rush me through my extensive notes and listened to all my concerns

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November 07, 2025

5.0

Dr. Keller is very competent very caring very knowledgeable and able to get an appointment with him

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November 04, 2025

5.0

Dr. Keller is an outstanding physician and treats me as an individual, not a number. He is easy to talk to and explains anything I do not understand in a way that I come away understanding more about my condition and how to treat it.

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November 04, 2025

5.0

I liked his manner

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November 03, 2025

5.0

Because Dr Keller listens, he cares and is helpful.

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November 03, 2025

5.0

friendly, thorough and knowledgeable

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October 29, 2025

5.0

Good explanation, experience, and patience.

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October 29, 2025

5.0

A wonderful Caring and kind doctor! Gives you a plan to correct the problem

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October 29, 2025

5.0

He is a good doctor

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October 28, 2025

5.0

I like my Doctor any question or concerns I have he is very attentive to my needs.

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October 27, 2025

5.0

Knowledgeable

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October 27, 2025

5.0

Doctor was knowledgeable and thorough

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October 25, 2025

5.0

Knowledgeable Doctor with a real concern for patients.

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October 23, 2025

5.0

I feel he is a very good doctor and he is willing to listen to the patient

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October 23, 2025

5.0

He was thorough and gave me time to express my concerns

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October 22, 2025

5.0

I feel very comfortable with Dr. Keller in his care and concern for my health

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October 21, 2025

5.0

Dr. Keller had reviewed notes of my previous visits with Dr. Mary Zinn as well as my recent CT scan report. He spent time in listening to the history of my 1st episode of hemoptisis, asked pertinent questions, explained the radiologist report of recent scan compared with previous CT scans, and provided information for taking care of myself with a 6 month visit after another CT scan to monitor progress. Also how to communicate with him should there be any further episodes.

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October 21, 2025

5.0

Very kind and understanding and helpful with COPD

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October 20, 2025

5.0

We liked him and he took time to explain everything

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October 17, 2025

5.0

Just stated above. He's an excellent physician.

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October 17, 2025

5.0

He listens to you and suggest his ideas

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October 15, 2025

5.0

Dr. Keller listened and explained his recommendations clearly. I'm highly confident in his ability to provide management and care for my pulmonary needs.

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October 14, 2025

5.0

Just getting to know Dr. Keller

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October 13, 2025

5.0

Excellent Doctor

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October 10, 2025

5.0

I liked him and felt he was very thorough and was aware of my health issues.

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October 07, 2025

5.0

listens wert

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October 03, 2025

5.0

Good listener, asks questions, considers and answers, engaging...nice, smile and laughs with me.

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October 01, 2025

5.0

Dr Keller listened to my concerns, recommended what I think is a very logical plan for me. My primary concern is difficulty with altitude as I now spend about 1/2 time in CO. it is difficult for me to get to Denver for healthcare and I would like to keep my care in one place. He agreed to help me arrange necessary testing while, hopefully, avoiding driving to Denver. This will be so helpful to me.

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October 01, 2025

5.0

Thorough, responsive, and caring.

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September 30, 2025

5.0

Michael James Keller, MD explained everything to me about my condition.

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September 29, 2025

5.0

Here's a polished review you could use for Dr. Keller: He treats me not just as a patient, but as a person. His professionalism, dedication, and thorough approach have made a tremendous difference in my health and peace of mind. I feel very fortunate to be under his care and would highly recommend him to anyone seeking a knowledgeable and caring doctor.

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September 28, 2025

5.0

Very capable and kind

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September 27, 2025

5.0

Because he listened and he was very helpful

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September 23, 2025

5.0

Dr. Keller has been my doctor for over 6 years. He's very thorough and explains things in a manner that can be easily understood. That's why I followed him when Suburban Lung broke up.

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September 16, 2025

5.0

He's an great listener was very professional will be telling people to go to this doctor

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September 16, 2025

5.0

Caring, answers questions, never feels rushed

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September 16, 2025

5.0

He is not only well versed with his practice but also, has empathy and I fully trust his working. I felt am in safe hands during this visit. He takes my vote for best Doctor for the year 2025.

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September 15, 2025

5.0

Great doctor

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September 12, 2025

5.0

Seemed to listen gave us tine to explain for a first appointment. We will follow up in a month.

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September 12, 2025

5.0

Outstanding people and Dr.Keller is what I believe to be a very good doctor

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September 12, 2025

5.0

Dr. Keller is a great person

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September 12, 2025

5.0

he is engaging and understanding

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September 10, 2025

5.0

He provided good clear information about my tests and answered my questions. He informed me of next steps.

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September 09, 2025

5.0

Dr Keller was very knowledgeable and took the time to answer all my questions

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September 01, 2025

5.0

Dr Keller is a no nonsense kind of Dr. He also listens to his patients and thier needs. I'm an Intensive care RN. He partners with me on the plan. I travel from the Western Suburbs to see him.

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August 30, 2025

5.0

Dr Keller explained things quite well

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August 30, 2025

5.0

Carefully explained everything

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August 29, 2025

5.0

As I said in my first answer, Dr. Keller was very kind and explained everything to me. He took his time and made sure I understood everything he said.

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August 29, 2025

5.0

I would recommend Michael Keller in a heartbeat to other friends and family members. He is a good doctor. I met him at suburban lung and came with him to Northwesten when he left suburban lung I am very satisfied with his care

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August 15, 2025

5.0

His knowledge and understanding of looking at the whole picture. I did not feel rushed at all.

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August 14, 2025

5.0

He showed us the results from all my tests and explained what everyone is seeing in my R lower lung. Thankfully he doesn't think anything fatal is going on and told me why. He answered all my questions and was able to spend time with me- we didn't feel rushed at all. I am so happy and feel very fortunate to have Dr Keller on my medical team.

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August 14, 2025

5.0

As above ..,.,,,knowledgeable , good listener and very professional.

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August 13, 2025

5.0

Very thorough, listened and helped problem solve

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August 12, 2025

5.0

Super kind and took time with me too talk and the staff was super nice

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August 10, 2025

5.0

You can see the Doctor knows how to do his job. thanks

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August 09, 2025

5.0

Dr. Keller really cares about His Patients Health.

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August 08, 2025

5.0

Best doctor and he has helped me very much.

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August 06, 2025

5.0

Thorough, efficient, compassionate and friendly

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July 29, 2025

5.0

Very knowledgeable and polite.

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July 29, 2025

5.0

He was great

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July 25, 2025

5.0

Because he is the best pulmonologist out there in my opinion.

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July 22, 2025

5.0

Is thorough

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July 18, 2025

5.0

He seemed to care about my husband and tried to help him with his medical problem.

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July 17, 2025

5.0

Dr Keller is knowledgeable, friendly and answers all questions.

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July 14, 2025

5.0

Professional, good communicator, thorough and knowledgeable.

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Disclosures

Michael J. Keller, MD reported no external professional relationships for calendar year 2024.

External Professional Relationships

Pharmaceutical, device, and biotechnology companies frequently collaborate with basic scientists and physicians within an academic medical center to help advance science and improve patient care. These relationships are important in achieving scientific breakthroughs and in establishing the effectiveness and safety of promising new therapies. In order to assure objectivity in clinical research and patient care, the Northwestern University Feinberg School of Medicine (Feinberg), Northwestern Memorial HealthCare, Children's Hospital of Chicago Medical Center, and the Shirley Ryan AbilityLab have adopted integrity policies that require research and clinical faculty (in full-time, part-time, and unpaid/voluntary categories) to report compensated and uncompensated external industry relationships. Patients are encouraged to discuss these disclosures with their physician as well as to inquire as to how these relationships are overseen by Feinberg. To learn more about our Disclosure and Professional Integrity Policy, and the conflict of interest policies of our joint affiliate survey partners, please go to our Office for Regulatory Affairs Policies page.

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