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David DeLapp, DO

4.9

1259 ratings Read Reviews

Northwestern Medicine Regional Medical Group

Primary Specialty

Pulmonology

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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
Circadian rhythm disorder
Cpap evaluation
Cpap related anxiety
Daytime sleepiness
Emphysema or copd
Hynagogic hallucinations
Hypersomnia
Hypoxemia
Insomnia

Narcolepsy
Night terror
Nightmares
Parasomnia
Pneumonia
Pulmonary embolism
Pulmonary fibrosis
Rem behavior disorder
Restless leg syndrome
Sarcoidosis
Scleroderma
Sleep apnea
Sleep paralysis
Sleepwalking
Snoring
Surgical clearance

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Education

Medical Education:: DO, Philadelphia College of Osteopathic Medicine - 2014
Residency:: Wright State University - 2017
Fellowships:: University of Louisville School of Medicine - 2020

University of Chicago - 2021

Board Certifications

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

Faculty Profile

Clinical Assistant Professor, Feinberg School of Medicine

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Practice Groups and Affiliations

Medical Group:: Northwestern Medicine Regional Medical Group
Alignment Category:: Northwestern Medicine Physician Network
On Medical Staff At:: Central DuPage Hospital

Delnor Hospital

Marianjoy Rehabilitation 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

1259 Ratings

Reviews from Patients

100 Most Recent Reviews

Reviews from Patients

100 Most Recent Reviews

February 26, 2026

5.0

Good listener and very able to answer questions. Took the time to push my wheel chair to the desk for appointments.

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February 26, 2026

5.0

Very knowledgeable.

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February 25, 2026

5.0

Dr Delapp is an excellent physician. He has a kind and understanding disposition. I trust him with my care immensely.

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February 25, 2026

5.0

Explained my situation & made suggestions on moving forward to address the situation!

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February 18, 2026

5.0

Very good

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February 18, 2026

5.0

He is so patient focused and talks as if you are talking to a friend!

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February 13, 2026

5.0

Good knowledgeable doctor

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February 09, 2026

5.0

Dr. Delapp is a good doctor. Knows his stuff. Very kind and easy to talk to. Got me on my way to recovery.

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February 08, 2026

5.0

Dr Delapp is personable, makes me feel at ease and explains everything very well. He is also a good listener.

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February 08, 2026

5.0

He was concerned I was having no trouble with my equipment and breathing.

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February 06, 2026

5.0

He is a caring physician who communicates well and provides patients treatment options

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February 05, 2026

5.0

Dr. DeLapp seemed very professional, knowledgeable and compassionate

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February 02, 2026

5.0

He is personable, knows the topic and is friendly.

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January 27, 2026

5.0

Good Doctor

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January 20, 2026

5.0

He is very thorough and patient.

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January 18, 2026

5.0

very friendly, answers questions and explains everything

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January 18, 2026

5.0

Patient, forthcoming and reassuring

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January 15, 2026

5.0

Understanding

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January 15, 2026

5.0

He listens to me

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January 13, 2026

5.0

He is the experienced medical professional, who rendered good care to me

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January 12, 2026

5.0

He is polite and listens

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January 12, 2026

5.0

Very knowledgeable of my issues and listened and answered all my concerns

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January 06, 2026

5.0

Dr Delapp is very personable and caring .He tries his best to keep me healthy

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January 04, 2026

5.0

Dr DeLapp is the best! Very thoughtful in his discussions and recommendations. I never feel rushed and he answers all my questions and then some I didn't think of!

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January 02, 2026

5.0

Thorough man skilled at articulating treatment plans.

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January 02, 2026

5.0

He's very thorough, compassionate listens, and ask if you have any questions knowledgeable all around a good person doctor that's what we need

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January 02, 2026

5.0

Knowledgeable, caring, willing to analyze situations

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December 25, 2025

5.0

He took time to answer all my questions, and explained data related to my CPAP machine. He was very thorough and patient yet efficient I felt very comfortable with him.

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December 23, 2025

5.0

He's a very nice Dr. he is very caring

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December 23, 2025

5.0

Dr. Delapp includes me in the decisions about my healthcare, and explains carefully my health situation and choices.

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December 20, 2025

5.0

Ease and promptness

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December 16, 2025

5.0

Very personable and knowledgeable. Answered all my questions. My wife also liked him.

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December 15, 2025

5.0

The doctor was attentive to my problems. He offered a solution that made me happy. Thank you.

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December 14, 2025

5.0

Very professional, very knowledgeable, and made me feel at ease.

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December 11, 2025

5.0

Things where explained to me about sleep apnea better by Dr. Delapp to me and my wife than anyone has done for us on the past

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December 05, 2025

5.0

The doctor has a good bedside manner and is very knowledgeable

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December 04, 2025

5.0

He is caring smart and a great physician

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December 03, 2025

5.0

Listens carefully and responds

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November 21, 2025

5.0

Was very thorough & explained my test results to me! Was easy to talk to.

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November 20, 2025

5.0

Dr DeLapp is so good . He goes above and beyond to make sure I get the best possible care.

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November 20, 2025

5.0

We have complete confidence in his care!

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November 19, 2025

5.0

He's fantastic. Knowledgeable, patient and engaging.

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November 18, 2025

5.0

Explanes everything and takes time with you

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November 18, 2025

5.0

he was very personal and great bedside manner

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November 10, 2025

5.0

Knowledgeable, empathetic, friendly and respectful

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November 03, 2025

5.0

I found Dr. Delapp very pleasant and competent

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November 03, 2025

5.0

Dr. DeLapp is very kind and helpful. He's very knowledgeable and thorough and he makes sure to answer any questions. He never seems rushed and he is always very kind.

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November 03, 2025

5.0

Dr Delapp is excellent

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October 30, 2025

5.0

Dr DeLapp is always listening and making sure my health is getting better.

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October 28, 2025

5.0

Great care

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October 28, 2025

5.0

Excellent and personable physician.

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October 24, 2025

5.0

Kind and understanding

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October 22, 2025

5.0

Thorough, approachable. Diagnosis and treatment have improved quality of life in regard to breathing.

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October 17, 2025

5.0

He's honest and caring. I believe he wants the best for me.

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October 15, 2025

5.0

Dr DeLapp has a wonderful disposition. He is knowledgeable, kind and helpful. He explained things in an easy to understand manner.

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October 14, 2025

5.0

Very personable and patient with all questions, very thorough in his answers. I always feel I have input in any recommendations.

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October 14, 2025

5.0

Dr.David Delapp listens to his patients. He discusses treatment options with pros and cons of each option. He is an astute clinician. He has a very likable personality.

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October 14, 2025

5.0

He listens, very professional and he looks for answers

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October 07, 2025

5.0

He listens to his patients, he is also a friendly person, he really gets to know his patients.

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October 06, 2025

5.0

Clear communication, totally felt that he was more concerned about my health than I am and clearly communicated why he was doing what he was suggesting

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October 01, 2025

5.0

Dr. Delapp was very knowledgeable and took interest in my breathing and sleep issues

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September 30, 2025

5.0

I like the way I am treated andI trust the Doctor.

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September 30, 2025

5.0

Dr. Delapp is always welcoming. He takes time to talk with me, explains everything and answers my questions.

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September 24, 2025

5.0

Good guy and friendly.

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September 21, 2025

5.0

He is knowledgeable, listens carefully, explains findings and treatment plans.

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September 20, 2025

5.0

Helped my husband through his illness and currently helping me

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September 17, 2025

5.0

Down to earth Dr explains and answers questions. Easy to talk to.

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September 15, 2025

5.0

Dr. DeLapp takes the time and cares about his patients.

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September 12, 2025

5.0

He knows what he is doing and patiently answers our questions.

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September 08, 2025

5.0

New doctor today. No issues

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September 08, 2025

5.0

Very nice and straight forward and helpful

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September 04, 2025

5.0

He took the time to explain the different aspects of my care and why. And I didn't feel rushed when I had questions. I felt confident in my care when I left the office. In addition, the person who did my test was very helpful as well. Great job !

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August 26, 2025

5.0

He is knowledgeable, great reputation and professional.

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August 21, 2025

5.0

Great doctor and kind and knowledgeable man.

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August 20, 2025

5.0

Same as above!! Awesome, awesome doctor!!!

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August 01, 2025

5.0

This was my first meeting with Dr. Delapp as he takes over due to Dr. [last name]'s retirement. I like his manner, his quiet command of his skillset, direct responses to questions, and no nonsense approach - without being at all condescending (as I've experienced with others). He's a keeper.

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July 30, 2025

5.0

Took the take time to discuss a plan of action.

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July 29, 2025

5.0

See above. Excellent job by the Dr.

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July 29, 2025

5.0

DD does a good job explaining what my condition looks like, what type of treatment is available, and respects my decisions going forward.

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July 29, 2025

5.0

Dr. DeLapp is a fantastic doctor. He is extremely knowledgeable and is very friendly and personable. He never seems rushed. I always look forward to my appointments with him.

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July 25, 2025

5.0

Professional & knowledgeable good bed side manor.

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July 24, 2025

5.0

I feel that he has my best interests at heart. The severity of my disease doesn't stop him from considering available options for me to possibly improve my quality of life.

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July 24, 2025

5.0

He was open to answering all questions, provide direct feedback.

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July 21, 2025

5.0

Very attentive. listened. Ask questions made sure we understood.

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July 20, 2025

5.0

I like Dr. DeLapp a lot. He shows genuine interest in my health, he explains things well and is easy to relate to. He's a good guy.

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July 20, 2025

5.0

Expert care

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July 18, 2025

4.0

Seems knowledgeable, doesn't talk down to you, invites questions, friendly, pleasant.

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July 17, 2025

5.0

Dr. DeLapp is focused, attentive, and very competent. I feel like my COPD is being well-managed under his care.

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July 17, 2025

5.0

Doc is very knowledgeable. He helps me a lot. And my life is better for it

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July 16, 2025

4.0

I am a new patient (transferred from Dr [last name] who retired). It will take some time to get to know Dr DeLapp. So far so good.

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July 15, 2025

5.0

He listens, he's compassionate. He explains clearly and he takes time to answer any of your questions.

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July 12, 2025

5.0

He took the time to review my chart before we spoke and he listened to my answers

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July 09, 2025

5.0

Outstanding, caring, considerate, and has the most wonderful manners of helping you understand every single thing about your problems. He takes his time with you and doesn't rush you out.

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July 08, 2025

5.0

Easy to talk to, listens.

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July 08, 2025

5.0

Very personable and allows for questions/provides feedback

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July 07, 2025

5.0

Dr took his time with me and explained everything in Laymans terms

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July 01, 2025

5.0

Dr DeLapp is a concerned physician who looks at all aspects of my issue and taught me so much in just one visit

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June 25, 2025

5.0

He went over my medications & recommended a home sleep study. He briefly explained on what to expect with this home sleep study & answered my questions.

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June 23, 2025

5.0

Great manners, knowledge and thorough explanations of the problem and options for solutions.

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June 20, 2025

5.0

He's the best

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Disclosures

David DeLapp, DO 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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