Measles Information

Thomas B. Nealis, MD

4.9

872 ratings Read Reviews

Northwestern Medical Group

Primary Specialty

Gastroenterology

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Practice Focus Areas

This medical professional has a particular interest or expertise in:

Education

Medical Education:: MD, Georgetown University School of Medicine - 2006
Residency:: McGaw Medical Center of Northwestern University - 2009
Fellowships:: McGaw Medical Center of Northwestern University - 2012

Board Certifications

American Board of Internal Medicine - Gastroenterology (Certified)

Faculty Profile

Assistant Professor, Feinberg School of Medicine

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Practice Groups and Affiliations

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

Delnor Hospital

Northwestern Memorial 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

872 Ratings

Reviews from Patients

100 Most Recent Reviews

Reviews from Patients

100 Most Recent Reviews

April 29, 2025

5.0

He is very informative and thorough..

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April 28, 2025

5.0

Dr. Nealis put me at easy right away. He was a pleasure to speak with, extremely knowledgeable and very thorough with the details about after I left his office

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April 28, 2025

5.0

FUN! & Lite Prior To The GIG. SO Appreciated! Dr. Nealis Practices BEST Medicine. Grateful!

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April 28, 2025

5.0

Great bedside manner. Very professional

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April 26, 2025

5.0

Doctor Nealis is very informative and is very patient and he explains everything. He gets very good advice and he always makes the best decisions for One In a Million.

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April 24, 2025

5.0

He is very kind and knowledgeable. Takes time to explain thoroughly

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April 21, 2025

5.0

The doctor listens to you carefully and gives you the medicine you need.

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April 21, 2025

5.0

I feel like my concerns are listened to and he takes the time to explain things as well.

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April 15, 2025

5.0

The doctor was very kind, he listened to all my symptoms and took his time to explain them to me.

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April 11, 2025

5.0

He is very personable and explains everything and answers any questions I have. Giulia has been so helpful to me as well. She always responds to my issues and questions when I reach out to her.

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April 10, 2025

5.0

Dr. Nealis is thorough. He carefully listens to the description of the symptoms and follows up with targeted questions.

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April 07, 2025

5.0

I have been treated by Dr Nealis for many years and he has always been very attentive to my concerns. He is very thorough, easy to understand and committed to his patients. One of the best!

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April 07, 2025

5.0

This is my first time with Dr. Nealis, and I am so happy I have found an amazing doctor at NWMH again. He listened to my concerns and took his time to explain everything to me. He is very reassuring and patient. I felt the humane approach during our interaction.

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April 07, 2025

5.0

Stress free communication and quick procedure

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April 07, 2025

5.0

Informative. let's face it. He is absolutely the best.

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April 04, 2025

5.0

I only met him for a few minutes before my colonoscopy, but he seemed very competent.

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March 21, 2025

5.0

Excellent Doctor

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March 19, 2025

5.0

He listened to me and was respectful.

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March 17, 2025

5.0

I did not interact with him that much because of the nature of the procedure, but he was kind and easy to speak with and answered all of my questions.

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March 14, 2025

5.0

Caring and efficient.

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March 11, 2025

5.0

He is very interested in your discomfort, he asks you questions and when you answer he is attentive to answer.

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March 08, 2025

5.0

He's great!

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March 06, 2025

5.0

Highly Skilled, professional and welcoming bedside manner, approachable, caring and highly detailed in patient history/details/symptoms with prompt form of action in medical protocol needed to find solutions. Knowledgeable sense of judgement of severity of illness(s) presented. Clear in explaining and instruction.

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March 05, 2025

5.0

Dr Niels explain the procedure, and put me at ease before the procedure . He then provided immediate follow-up in less than 48 hours. He was excellent!

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March 03, 2025

5.0

Dr. Nealis is so smart. He's very kind and you feel that he cares. He explains things well to make sure you understand everything.

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March 03, 2025

5.0

It is my actual Honor to score Dr. Thomas B. Nealis, he is a doctor that truly cares, he definitely takes great notes and ask you all the necessary questions, and he explains to you what he has entered into your chart. He is wonderful !!

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March 03, 2025

5.0

He takes time with me and listens to what I say

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February 22, 2025

5.0

Great bedside manner

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February 22, 2025

5.0

My husband recommended Dr Nealis and I see why. Explained procedure and follow up was good.

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February 21, 2025

5.0

Made me feel at ease.

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February 17, 2025

5.0

Asked and listened with a knowledgeable

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February 16, 2025

5.0

Dr. Nealis gives updates on test or procedure done and explains about it! Happy that he is my GI doctor!

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February 13, 2025

5.0

Same as above. Dr Nealis is very straightforward, made me feel comfortable and confident and the very quick turnaround of the results was impressive.

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February 11, 2025

4.0

Dr. Nealis was courteous and professional

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February 11, 2025

5.0

Very caring doctor- very open and informative about procedural results and recommendations. Same for his nursing staff- they stayed in absolutely immediate contact with me via MyChart messaging. I was never left in the dark nor unassured about my concerns.

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January 27, 2025

5.0

Very helpful. Took many notes. Asked all the relevant questions. Explained his every move and made sure I understood what happened during my visit with him.

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January 25, 2025

5.0

Dr Nealis MD is very knowledgeable and has diagnosed my problems. I have been feeling highly relieved with his treatment and his referral to other departments for my treatment. Thanks a lot Dr Nealis.

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January 25, 2025

5.0

Very confident in Dr. Nealis. Besides myself, he diagnosed and successfully treated a problem that had caused major issue for my wife for years. Further, our primary care doctor has very high opinion of him.

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January 25, 2025

5.0

Dr. Nealis was very personable and thorough during my initial visit. He was also very communicative before and after the procedures. I appreciate the excellent service that he provided.

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January 07, 2025

5.0

Very, very knowledgeable. Explains all aspects thoroughly. Efficient while listening. Answers questions openly. Appears to adapt his style to his patient's needs/personality (as rare as a three-legged ballerina). Kind. Human. Actually smiles. He should be proud - show this to his family and friends.

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December 23, 2024

5.0

Very kind and helpful doctor- he carefully explained everything that was to take place, and following the procedure, he explained the findings and had a detailed hard copy report available immediately, as well as posted on MyChart results very soon afterwards.

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December 20, 2024

5.0

He's a great doctor to work with.

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December 17, 2024

5.0

Excellent doctor

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December 17, 2024

5.0

My follow up visit with Dr. Tom Nealis was wonderful He took time to explain what happened in the procedure and what the follow up would be. He is a very thorough doctor. He listened to my questions and respected me as a person. He was not in a hurry during the visit, and even reminded me to call him/or patient portal, if I had any concerns. I felt supported by him.

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December 10, 2024

5.0

Very professional and complete in his explanations. Would be great to have him at Delnor/CDH

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December 09, 2024

5.0

He is professional and was very easy to talk to. He took the time and made sure I understood the procedure, follow up notifications and any next steps.

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December 09, 2024

5.0

He gave me plenty of time to ask all of my questions.

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December 09, 2024

5.0

He is the best!

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December 07, 2024

5.0

He was very understanding and very nice

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December 05, 2024

5.0

A primary concern of patients is that their physician does not pay adequate attention or time evaluating their reasons for seeking medical care. This was not the case with Dr. Nealis, who was very engaged.

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November 28, 2024

5.0

Excellent, Dr., an eminence in his specialty.

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November 27, 2024

5.0

very friendly and detail explanation explanation of all procedure

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November 25, 2024

5.0

He had a great bedside manner and he did a great job of explaining the procedure to me .

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November 22, 2024

5.0

Doctor Thomas B.Nealis is very professional!

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November 22, 2024

5.0

Much respect for Dr. Thomas B. Nealis.

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November 19, 2024

5.0

First time meeting Dr. Nealis. He made me feel at ease and I finally feel like I might get some answers.

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November 19, 2024

5.0

Dr Nealis was very kind, knowledgable, and engaged in shared decision making. He explained everything well and made me feel comfortable.

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November 18, 2024

5.0

Thoughtful, and listened

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November 18, 2024

5.0

His fellow up with comments in app.

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November 18, 2024

5.0

When They Talk To Me At First I Understood That They Are The Best .After They Did the Service l Didn't fill any pain up to know God Bless them.

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November 18, 2024

5.0

Knowledgeable and good bedside manner.

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November 09, 2024

5.0

Very personable and communicated very well with me.

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November 08, 2024

5.0

satisfied wit the care i received

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November 06, 2024

5.0

The Doctors and Nurses are very Patient with the Patient taking the time to talk with the patient and never feeling as though you are being Rushed! Thank you!!

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November 04, 2024

5.0

Dr. Nealis is wonderful. He has a great bedside manner and explains everything clearly so I feel informed about my care.

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November 01, 2024

5.0

Dr Nealis is an excellent physician who is also very kind and caring with his patients as well with his staff and coworkers He leaves no patient questions go unanswered and responds very quickly with after visit summaries and results of procedures and tests

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October 31, 2024

5.0

His knowledge and experience combined with his sense of humanity and level of care

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October 29, 2024

5.0

Dr Nealis is very thorough, patient and knowledgeable. Would be better though if he could return to NM Delnor location as I have to travel over 45 miles to see him at the downtown NM location. .

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October 29, 2024

5.0

For similar reasons as noted above, I found Dr Nealis' approach very effective. He was kind, attentive to my thoughts, and concerns. He had done som preview of my charts so used our time together efficiently. He seemed like he truly cared about my thoughts and concerns with active listening skills. Even recommending a blood test for a symptom I've had years ago that is now recurring. Dr. took the time to write notes and explain them to me with the why behind them that helped me process what I needed to do in my brain and memory bank, Dr. also gave me options for pre and post care for an exam which I appreciate. I was happy that he was assigned as my GI specialist.

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October 28, 2024

5.0

Felt like the doctor cared about me. Exam results very quick.

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October 28, 2024

5.0

Dr. Nealis was very thorough in explaining things to me. My son, who is an MD read his report and was impressed by its thoroughness. I didn't feel anything during the procedure and recovered more easily than my last 2 colonoscopies.

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October 25, 2024

5.0

The doctor was very kind, explained everything to me and answered all of my questions.

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October 21, 2024

5.0

Please see my answer to the previous question, as I responded in detail to my experience with Dr. Nealis, and why I think he is so excellent in every regard.

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October 21, 2024

5.0

Answered my questions and was nice

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October 21, 2024

5.0

Great bedside manner, humorous and made me feel more at ease with the procedure and what was about to happen before the sedation.

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October 18, 2024

5.0

I liked his professionalism and pleasant demeanor.

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October 18, 2024

5.0

Dr Nealis takes time to explain procedures and answer questions. He explained that my that my diagnosis was hereditary and that my children needed to also see a gastroenterologist. He was right. In addition after procedures he personally calls to follow up on how I'm feeling. He's the best!!

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October 17, 2024

5.0

Nice, kind and very knowledge

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October 14, 2024

5.0

Friendly and respectful and listening

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October 14, 2024

5.0

Excellent bedside manner and quick results of the procedure.

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October 14, 2024

5.0

He obviously had read my records and had some recommendations based on that.

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October 11, 2024

5.0

Great doctor. Listens, cares, respects patient's time, thorough.

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October 11, 2024

5.0

He took his time with my care. I felt heard and understood

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October 04, 2024

5.0

Very easy process he was very nice

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October 03, 2024

5.0

Dr. Nealis is a kind and caring doctor who makes you feel important and cared for.

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September 30, 2024

5.0

Very caring and put me at ease from the get-go. He is a great surgeon!

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September 30, 2024

5.0

No complaints and answer all my questions and concerns of my examination.

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September 28, 2024

5.0

Dr. Nealis and his team were great! I have PTSD and have a lot of stress and fear about being under anesthesia. My nervous system is wired for stress and Dr.Nealis and his entire team were available for questions leading up to the procedure. On the day of the procedure, I had all the support I needed from the team to get through my procedure. I had several pre-cancerous polyps removed. It always surprise me that I have no pain after having things removed.

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September 28, 2024

5.0

I feel like he cares about his patients and doesn't rush through the exam.

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September 23, 2024

5.0

He has great beside manner

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September 23, 2024

5.0

Great bedside manner... felt comfortable and appreciate him answering questions

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September 23, 2024

5.0

He is one of the best doctors I have ever had and I even travel from Naperville to be treated by him.

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September 21, 2024

5.0

He dedicated time to answer all my questions and put me at ease about the procedure. Follow up about results was fast and clear.

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September 20, 2024

5.0

Dr. Nealis made me feel comfortable and that he was truly concerned with my care

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September 19, 2024

5.0

Dr. Nealis was patient with me and very informative from onset of my initial contact with him . I had experienced significant discomfort during my initial colonoscopy and the physician recommended general anesthesia for future colonoscopies. Dr. Nealis reassured me that ii would be able to have the procedure without having a general anesthetic.. I was appreciative that that's exactly what happened, and very grateful that he took the time to listen to my concerns and address them in the most therapeutic manner.

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September 16, 2024

5.0

He was very professional and pleasant. He explained the details of the Colonoscopy and offered me the opportunity to ask questions.

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September 16, 2024

5.0

Very thorough, very professional and results came in quickly.

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September 15, 2024

5.0

Dr. Nealis, MD was very informative and made sure that I understood everything about my colonoscopy procedure.

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September 11, 2024

5.0

He is the best. He is compassionate and knowledgeable. He took a good history, listened to all complaints, gave a thorough physical examination and laid out a good plan of treatment and followup

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September 11, 2024

5.0

Dr. Nealis is very professional, thorough, kind, and caring of his patients. Dr. Nealis takes the time to understand how GI problems and symptoms affect everyday life, and after taking in all of the information, he derives at a very smart plan to address any and all issues. Dr. Nealis cares and he's a great doctor. I would recommend him without any reservation.

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Disclosures

Thomas B. Nealis, 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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