Nikolaos A. Dallas

Nikolaos A. Dallas, M.D.

3000 North Halsted Street

Chicago, Illinois 60657

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Nikolaos A. Dallas, M.D.


3000 North Halsted Street

Suite 509

Chicago, Illinois 60657


Open today 8:00 am

5:00 pm

Open today 8:00 am

5:00 pm

Open today 8:00 am

5:00 pm

Open today 8:00 am

5:00 pm

Open today 8:00 am

5:00 pm

Open today


Open today


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I am committed to providing the best care to each patient, while respecting their familial, social, and cultural setting. Patient autonomy and individualized decision-making are of paramount importance in both General Surgery and Surgical Oncology.

About Me

  • Medical Specialties: Oncology-SurgicalGeneral Surgery
  • Gender:
  • Age: 39
  • Years in Practice:
  • Board Certifications: Oncology-SurgicalGeneral Surgery



  • Fellowship: University of Texas - MD Anderson Cancer Center, Surgical Oncology
  • Residency: Northwestern Memorial Hospital, General Surgery
  • Medical School: Northwestern University Medical School

Hospital Affiliations

  • Advocate Illinois Masonic Medical Center

Ratings and Comments

Nikolaos A. Dallas, M.D.

4.8 out of 5

283 Patient Ratings

Listens carefully to you

4.9 out of 5

281 Patient Ratings

Gives easy to understand instructions

4.9 out of 5

257 Patient Ratings

Explains in a way you understand

4.9 out of 5

282 Patient Ratings

Spends enough time with you

4.8 out of 5

281 Patient Ratings

Knows your important medical history

4.6 out of 5

280 Patient Ratings

Shows respect for what you say

4.9 out of 5

280 Patient Ratings


Dr. Dallas is a kind and understanding surgeon. He was friendly and helped me feel comfortable with the procedure.

Reviewed on May 28, 2019 7:00 PM

I just loved Dr. Dallas - so compassionate so focus on me!

Reviewed on May 20, 2019 7:00 PM

As always - everyone I came in contact with at Advocate (phone - in person) is A-1.

Reviewed on May 16, 2019 7:00 PM

Dr. Dallas is a general surgeon. He examined me, gave his view and we mutually discussed the surgery. I had some questions as there is much in the news about the procedure and history of people having post surgical problems. He was a bit light on really telling me how large the recuperation time would be. Made it seem like a piece of cake. After the surgery, his office did not have the records they needed to discuss just what happened during my surgery. They said the records were on another file at the surgical center. Overall, however, I am happy with the surgeon and his treatment of me. Unfortunately my wound did open a bit and bled two weeks after surgery and a suture was poking out of the wound. I went in and the n urse clipped it off but no one had warned that this could happen. it is a bit shocking to see a suture coming out of your wound. That said, I would return to him and recommend hi to others.

Reviewed on May 10, 2019 7:00 PM

very nice and clean office. very friendly receptionists and medical staff. very easy going doctor. made me feel comfortable.

Reviewed on May 3, 2019 7:00 PM

This visit with Dr. Dallas was for a check up and some test results. After discussing the results of the test, Dr. Dallas answered all the questions I had. After giving me orders for more tests before my next visit, we then ended our visit.

Reviewed on April 26, 2019 7:00 PM

Dr. Dallas is the best always happy with our visit.

Reviewed on April 21, 2019 7:00 PM

Dr. Dallas is an excellent physician if I have any other health concerns I will be seeing him again.

Reviewed on April 15, 2019 7:00 PM

Dr. Dallas is an excellent doctor and always spends time explaining things in basic terms. He is very personable and I have his expertise.

Reviewed on March 24, 2019 7:00 PM


Reviewed on March 24, 2019 7:00 PM

Dr. Dallas was great, fixed me right up.

Reviewed on March 23, 2019 7:00 PM

Dr. Dallas was excellent spoke Spanish to me, explained everything to me.

Reviewed on March 17, 2019 7:00 PM


Reviewed on March 7, 2019 6:00 PM

dr Dallas is an awesome surgeon. he was the one that found the cancer and helped me through the whole ordeal. his team was magnificent. thank God for all of his team

Reviewed on February 22, 2019 6:00 PM

Dr. Dallas is an amazing doctor. He has such a great attitude. He made me and my family calm before the procedure.

Reviewed on February 6, 2019 6:00 PM

Dr. Dallas and staff are excellent and I would recommend them to anyone who asks. He reviewed details of my issues and answered all of my questions until I had all the information I needed.

Reviewed on February 4, 2019 6:00 PM

I appreciate how Dr Dallas was professional yet upbeat about my medical concerns. And I'm extremely thankful for the preventive care his team provided. And I feel completely safe to contact him for any health concerns I may have in the future. However, given that he deals with abnormal breast concerns , I hope not to see him again for a long, long, long time.

Reviewed on February 2, 2019 6:00 PM

very uncomfortable. he acted like ok your mammogram was fine you do not have to see me anymore. have another one in a year and go with the dr at the cancer center. not happy at all

Reviewed on January 29, 2019 6:00 PM

Dr. Dallas is an amazing doctor/surgeon. He explained very emphatically that my cancer returned. And took the time to explain his plan for care. His caring, "bedside manner is something I & others need given what we are going through.

Reviewed on January 28, 2019 6:00 PM

I always have a good experience whenever I go.

Reviewed on January 27, 2019 6:00 PM

he is very caring and excellent.

Reviewed on January 26, 2019 6:00 PM

Dr. Dallas was very professional, compassionate and supportive.

Reviewed on January 24, 2019 6:00 PM

I liked dr. Dallas a lot. he is very nice and easy to talk to.

Reviewed on January 24, 2019 6:00 PM

Very professional and courteous staff. Always friendly and welcoming.

Reviewed on January 24, 2019 6:00 PM

I saw Dr. Dallas regarding a condition I did not know I had until recently. We discussed my options in taking care of the condition.

Reviewed on January 24, 2019 6:00 PM

Dr. Dallas and his team where excellent in every way . Thank you and I have been sharing this opinion with my entire network . All the best in 2019 .

Reviewed on January 13, 2019 6:00 PM

Dr. Dallas and his staff are extraordinarily friendly and helpful.

Reviewed on January 13, 2019 6:00 PM


Reviewed on January 13, 2019 6:00 PM

Dr. Dallas and his team were wonderful taking care of me during my gall bladder removal procedure last October. I thank them for a great care and making me feel comfortable during the whole process.

Reviewed on December 16, 2018 6:00 PM

Very good.

Reviewed on November 28, 2018 6:00 PM

The doctor was very helpful.

Reviewed on November 23, 2018 6:00 PM

Dr. Dallas is the best!

Reviewed on November 19, 2018 6:00 PM

He was very respectful, answered all my questions, made me feel @ ease & very knowledgeable of procedure. He said I require & he'll be there every minute for me.

Reviewed on November 15, 2018 6:00 PM

Dr. Dallas was awesome, very easy to talk to and made me feel very comfortable.

Reviewed on November 5, 2018 6:00 PM

My visits with Dr. Dallas are always very pleasant. Everyone is always so courteous & helpful. Dr.. Dallas always answers all of my questions & concerns and always makes me feel at ease. I would highly recommend him to anyone who needed the type of surgery that he specializes in.

Reviewed on October 22, 2018 7:00 PM

Dr. Dallas and his team were fantastic. I have no complaints about anything and would recommend them to friends and family without a doubt.

Reviewed on October 20, 2018 7:00 PM

Dr. Dallas' talk about pancreatic cysts calmed down my anxiety and fear about the possibility of cancer.

Reviewed on October 20, 2018 7:00 PM

Dr. Dallas is very attentive and very funny! Great personality. Great bedside manner.

Reviewed on October 12, 2018 7:00 PM

It went well, I have no complaints.

Reviewed on October 9, 2018 7:00 PM

This was the best visit & doctor I ever spoke with. I wish Dr. Dallis could be my primary doctor!

Reviewed on October 2, 2018 7:00 PM

Dr. Dallas is awesome. I just wish the surgery was the outcome we wanted. I'm in more pain now than before the surgery. Dr. Dallas did his best. I appreciate him for trying.

Reviewed on September 28, 2018 7:00 PM

Very good.

Reviewed on September 18, 2018 7:00 PM

Dr. Dallas was very polite, introduce himself, shook my hand then he explain what needed to be done.

Reviewed on September 5, 2018 7:00 PM

Dr. Dallas is the best. I'll be back to get a dr. for my health care. Your hospital is excellent. I'll let people know about it. Thank you for my care.

Reviewed on August 27, 2018 7:00 PM

Dr. Dallas, provides excellent service, he takes time to address your needs.

Reviewed on August 11, 2018 7:00 PM

I called and was able to get an appointment very quickly. This was very much appreciated.

Reviewed on July 31, 2018 7:00 PM

Great Dr Dallas took time to answer my questions,and make sure I understood what was going on, make me feel really good,real proffesional and confident.

Reviewed on July 30, 2018 7:00 PM

Very professional, caring and knowledgeable. Dr. Dallas was extremely kind and compassionate. He answered all my questions.

Reviewed on July 29, 2018 7:00 PM

Dr. Dallas Rocks!

Reviewed on July 28, 2018 7:00 PM

Was very nice, and answered all questions that I needed to know.

Reviewed on July 23, 2018 7:00 PM

I did like how they attended me very kind & very professional & all the nurses very kind.

Reviewed on July 20, 2018 7:00 PM

Dr. Dallas and his team are polite, professional and very kind. They placed me at ease and answered my concerns and questions.

Reviewed on July 15, 2018 7:00 PM

Highly recommended by my primary physician. Talked fast and did not talk about consequences of procedure.

Reviewed on June 24, 2018 7:00 PM

My experience was good I would recommend this provider.

Reviewed on June 20, 2018 7:00 PM

I was very pleased.

Reviewed on June 4, 2018 7:00 PM

Excellent Provider, very kind and explained procedure and results very clearly.

Reviewed on June 2, 2018 7:00 PM

This is my second visit to Advocate Medical Group and once more your service as excellent thanks for your service.

Reviewed on May 28, 2018 7:00 PM

This visit was successful, professional and met my expectations.

Reviewed on May 23, 2018 7:00 PM

Dr. Dallas is the best!!!

Reviewed on May 15, 2018 7:00 PM

Dr. Dallas was very easy to talk to and walked through the whole procedure. He answered all my questions in everyday language without feeling hurried.

Reviewed on May 7, 2018 7:00 PM

Dr Dallas is great when is Advocate -Aurora going to implement an integrated system like Epic?

Reviewed on May 4, 2018 7:00 PM

excellent doctor, very helpful ,friendly, thx

Reviewed on April 29, 2018 7:00 PM

The Provider is knowledgeable, experienced, courtesy, and listened carefully to what I told him and what I expect. He performed the surgery with care, talked to me and listened to what I expected. During the surgery, he told me what he was doing and asked me to let him know if I had any pain. I think the Provider is a good surgeon.

Reviewed on April 16, 2018 7:00 PM

24. I had just had surgery - not future surgery. Dr. Dallas is kind, intelligent, very good at what he does & is highly skilled surgeon. Thank goodness he is my doctor.

Reviewed on April 10, 2018 7:00 PM

he was amazing

Reviewed on April 8, 2018 7:00 PM

Dr. Dallas is amazing. He's smart, charismatic, attentive, thoughtful, thorough and I had a great experience with him and a great outcome from the surgery. Exceeded my expectations.

Reviewed on March 25, 2018 7:00 PM

5 Stars! A+++++ Dr. Dallas is the best!

Reviewed on March 12, 2018 7:00 PM

Dr. Dallas was super competent, friendly, efficient. Great skills, compassionate & caring.

Reviewed on March 12, 2018 7:00 PM

I saw him for the first time, he was pleasant, informative, he did not rush me out and did answer all my questions.

Reviewed on March 5, 2018 6:00 PM

Very professional, informative & kind.

Reviewed on March 4, 2018 6:00 PM

The treatment from the doctor was very professional & at NO MOMENT was I under stress.

Reviewed on March 1, 2018 6:00 PM

Dr Dallas is an excellent surgeon and I'm so glad I had him for my surgery. He is so kind, patient and knowledgeable. He made me feel at ease just before surgery and I knew I was in good hands. I would recommend him to anyone who needs a surgeon.

Reviewed on February 26, 2018 6:00 PM

I have always been comfortable and confident in Dr Dallas's treatment of me. he is very available and listens! unusual for a surgeon.

Reviewed on February 23, 2018 6:00 PM

I feel I had very respect and attention from clerks and the provider himself.

Reviewed on February 6, 2018 6:00 PM


Reviewed on January 16, 2018 6:00 PM

Dr Dallas has a warm plesant manner, The surgery he performed went well and he prrepared me for the effects.

Reviewed on December 22, 2017 6:00 PM

Dr. Dallas and his team are the best. I would not be alive without them. Happily 2 years

Reviewed on December 5, 2017 6:00 PM

Provider -> very neat, very clean, talk with a smile, makes me feel relax asking medical questions concerning my health condition.

Reviewed on November 30, 2017 6:00 PM

He was interested on my reasons to have this surgery. He explained as clear as he could the procedure. He was friendly, confident. Made me feel comfortable.

Reviewed on November 28, 2017 6:00 PM

The doctor was friendly, knowledgeable, professional, compassionate, and generally made me feel comfortable and confident in his assessment.

Reviewed on November 19, 2017 6:00 PM

I am very grateful and thankful to all the people working with this Provider including Dr. Dallas who is an excellent doctor.

Reviewed on November 8, 2017 6:00 PM

Excellent care from provider and staff. Answered my questions, treated me well. Put me at ease.

Reviewed on November 6, 2017 6:00 PM

Dr. Dallas was very patient in explaining all the details of the surgery and all the options. He gave us the opportunity to ask all of our questions and left us feeling confident that I was in good hands.

Reviewed on October 26, 2017 7:00 PM

I only saw Dr Dallas for the muscle biopsy that I needed but for that he was knowledgable and a good communicator.

Reviewed on October 23, 2017 7:00 PM

Dr. Dallas & his staff are the best.

Reviewed on October 10, 2017 7:00 PM

It was a Post Surgery visit This was one of the Best Doctors I had ever met !

Reviewed on September 25, 2017 7:00 PM

Pleasant personality/very accommodating & very knowledgeable of his expertise being a gen. surgeon/oncologist.

Reviewed on September 24, 2017 7:00 PM

He was friendly, helpful, explained well. This was my first contact with Dr. Dallas.

Reviewed on September 5, 2017 7:00 PM

Dr. Dallas is very knowledgeable, clear, and straight forward. He made me feel completely prepared, informed, and at ease about my surgery and my options. I highly recommend him to family and friends in need of surgery.

Reviewed on August 14, 2017 7:00 PM

Definitely,my provider is number one,excellent.He need to be keeping in that hospital forever .I wish prosperity and good health for him and all the staff.

Reviewed on July 31, 2017 7:00 PM

Dr. Dalas is a very nice person and a excellent surgeon.

Reviewed on July 27, 2017 7:00 PM

Dr. Dallas and his whole team - including the people at the hospital were AMAZING! I felt calm, comfortable and very well cared for.

Reviewed on July 16, 2017 7:00 PM

Good experience with doctor, nurses, and office staff.

Reviewed on July 12, 2017 7:00 PM

Provider was great.

Reviewed on July 8, 2017 7:00 PM

Dr. Dallas is one of the best surgeons in Chicago.. Personable and amazing dr. Should be recognized I completely trust this provider.

Reviewed on May 2, 2017 7:00 PM

Dr. NIKOLAOS - very professional and ACCOMMODATING.

Reviewed on May 2, 2017 7:00 PM

Dr. Dallas is a knowledgeable MD.

Reviewed on May 2, 2017 7:00 PM

my experience with Dr. Dallas was great. I felt very comfortable and informed. my more challenging experience was at the ER.

Reviewed on April 23, 2017 7:00 PM

Dr. Dallas showed a genuine interest in making sure that the surgery was necessary and that he was approaching the problem with the best possible action plan. He ordered a Cat Scan to determine if he should proceed with surgery or if he will rather manage my hernia issues without surgery. I really appreciate his professionalism. Dr. Dallas is highly respected in the medical community.

Reviewed on April 21, 2017 7:00 PM

Dr Dallas and his staff are wonderful. he speaks to me as an equal, explains issues very well and was exceptionally patient with my mom who suffers from APA.

Reviewed on April 16, 2017 7:00 PM

health eNews with Nikolaos A. Dallas, M.D.

Medical Areas of Expertise

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Clinical Interests

  • Breast Cancer
  • Endocrine Cancers
  • Gastrointestinal Malignancies
  • LGBTQ Health
  • Melanoma
  • Peritoneal Malignancies
  • Sarcoma
  • TGNC - Hormone/Surgery/Procedures


  • AAH Preferred – Team Member Plan
  • AAH Select – Team Member Plan
  • AARP MedicareComplete Plus HMO - POS
  • Aetna Better Health Premier Plan MMAI
  • Aetna Choice POS
  • Aetna Choice POS II
  • Aetna HMO
  • Aetna Managed Choice (MC) POS
  • Aetna NAP - PPO
  • Aetna Open Access POS
  • Aetna Open Choice POS
  • Aetna Open Choice PPO
  • Aetna Select Choice EPO
  • Aetna Select POS
  • Aetna Signature Administrators PPO
  • Aetna US Healthcare Medicare Advantage HMO
  • Beech Street Network PPO
  • Blue Advantage HMO
  • Blue Cross HMO Illinois
  • Blue Cross Medicare Advantage HMO
  • Blue Cross Medicare Advantage HMO - POS
  • Blue Cross Medicare Advantage PPO
  • Blue Cross PPO
  • Blue Cross PPO - Advocate Associate Medical Plan
  • Blue Precision Bronze HMO
  • Blue Precision Gold HMO
  • Blue Precision HMO
  • Blue Precision Platinum HMO
  • Blue Precision Silver HMO
  • BlueCare Direct
  • Cigna C - 5 POS
  • Cigna Health Partners POS
  • Cigna Health Partners PPO
  • Cigna Open Access Plus POS
  • Cigna Open Access Plus State of Illinois POS
  • CIGNA Open Access POS
  • Cigna POS
  • Cigna PPO
  • Cofinity PPO
  • Coventry HMO
  • Coventry One Select PPO
  • Coventry PPO
  • Coventry Workers Comp PPO
  • First Health Network EPO
  • First Health Network PPO
  • Great West Healthcare - Cigna HMO
  • Great West Healthcare - Cigna Open Access Plus HMO
  • Great West Healthcare - Cigna PPO
  • Harken Health Choice Plus
  • Harken Health Compass Plus
  • Health Alliance HMO
  • Health Alliance PPO
  • Healthlink PPO
  • HealthSpring Medicaid ICP
  • HealthSpring Medicare HMO
  • HealthSpring MMAI
  • HFN Platinum EPO
  • HFN Total Care PPO
  • Humana Advocate Health Care PPO
  • Humana Choice POS
  • Humana DuPage Medical Group HMO
  • Humana DuPage Medical Group HMO - HMO Select
  • Humana EPO - Advocate Associate Medical Plan
  • Humana Gold Choice PFFS
  • Humana Gold Choice PPO
  • Humana Gold Plus HMO
  • Humana Gold Plus Integrated-Medicare-Medicaid Plan
  • Humana HMO - Advocate Associate Medical Plan
  • Humana HMO Select
  • Humana Illinois Platinum HMO
  • Humana Integrated Care Program of Illinois
  • Humana Medicaid Managed Care Plan
  • Humana National EPO
  • Humana National HMO
  • Humana National POS - Open Access
  • Humana National PPO
  • Humana POS
  • Humana PPO
  • Humana PPO - Advocate Associate Medical Plan
  • LLH Adventist Silver PPO 3000
  • LLH Family Health Network Silver PPO 3100
  • LLH Swedish Covenant Silver PPO
  • Meridian
  • Meritain Health PPO
  • MultiPlan PPO
  • NALC (Natl Assn of Letter Carriers) Health Benefit
  • PHCS Savility PPO
  • Preferred Network Access PPO
  • Three Rivers Provider Network PPO
  • Tricare POS
  • Tricare PPO
  • UFCW Local 1546 Health and Welfare Fund (UMC)
  • UHC / AARP MedicareComplete (Secure Horizons) HMO
  • UHC / AARP MedicareComplete Focus HMO
  • Union Medical Care PPO
  • United Healthcare Charter
  • United Healthcare Choice HMO
  • United Healthcare Choice Plus POS
  • United Healthcare Compass HMO
  • United Healthcare Group Medicare Advantage PPO
  • United Healthcare Medicare Solutions PPO
  • United Healthcare MedicareComplete Plan 1 HMO
  • United Healthcare Navigate HMO
  • United Healthcare Navigate POS
  • United Healthcare Nexus
  • United Healthcare Options PPO
  • United Healthcare Select EPO
  • United Healthcare Select HMO
  • United Healthcare Select Plus POS


Learn more about this provider and request an appointment online. Prior to requesting an appointment with any provider you select, confirm with your insurance carrier that this doctor is in your insurance network.

Information listed under the "clinical interests" columns was supplied by the physicians. It is provided to you for informational purposes only, and neither Advocate Health Care nor the Advocate facility has independently verified the information. If you wish to confirm the information contained herein, or if you have any other questions about a particular physician, please contact the physician’s office.

Unless otherwise stated, physicians are independent practitioners who are not employees or agents of Advocate Health Care or the Advocate facility where the care is being provided. Neither Advocate Health Care nor the Advocate facility shall be liable for the medical care provided or decisions made by these independent physicians.

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