Nikolaos A. Dallas, MD

Specialty: General Surgery

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Advocate Medical Group

3000 North Halsted Street

Suite 509

Chicago, IL 60657

Get directions

Office: 773-296-3390

Fax: 773-296-7531

Meet Nikolaos A. Dallas, MD

About me

  • Breast CancerEndocrine CancersGastrointestinal MalignanciesLGBTQ HealthMelanomaPeritoneal MalignanciesSarcomaSurgical OncologyTGNC - Hormone/Surgery/Procedures



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

Board certifications

  • General Surgery

Hospital affiliations

  • Advocate Good Samaritan Hospital
  • Advocate Illinois Masonic Medical Center
  • Advocate Lutheran General Hospital

Insurance accepted

  • AAH Preferred – Team Member Plan
  • AAH Select – Team Member Plan
  • AARP Medicare Advantage Access HMO
  • Aetna Better Health Premier Plan MMAI
  • Aetna Coventry (Aetna Medicare) HMO
  • Aetna EPO
  • Aetna HMO
  • Aetna Managed Choice (MC) POS
  • Aetna Medicare HMO
  • Aetna Medicare POS
  • Aetna Medicare PPO
  • Aetna Medicare Value Plan PPO
  • Aetna NAP - PPO
  • Aetna Open Choice PPO
  • Aetna POS
  • Aetna Premier Care Network
  • Aetna Select
  • Aetna Signature Administrators PPO
  • Aetna State of Illinois HMO
  • Aetna State of Illinois Open Access Plus
  • Aetna State of Illinois PPO
  • Aetna Value Performance Network
  • Beech Street Network PPO
  • Benefit Plan Administrators (BPA)
  • Benefits Services and Systems, Inc
  • Blue Advantage HMO
  • Blue Cross Community FHP
  • Blue Cross Community ICP
  • Blue Cross Community MMAI
  • Blue Cross HMO Illinois
  • Blue Cross Med Select PPO
  • Blue Cross Medicare Advantage HMO
  • Blue Cross Medicare Advantage HMO-POS
  • Blue Cross Medicare Advantage PFFS
  • Blue Cross Medicare Advantage PPO
  • Blue Cross Medicare Supplement PPO
  • Blue Medicare Advocate Health HMO
  • Blue Precision HMO
  • BlueCare Direct
  • Cigna APWU Health Plan Open Access Plus
  • Cigna EPO
  • Cigna Health Partners POS
  • Cigna Healthspring True Choice PPO
  • Cigna HMO
  • Cigna NALC Health Benefits Plan
  • Cigna Open Access Plus
  • Cigna Open Access POS
  • Cigna POS
  • Cigna PPO
  • Cigna-HealthSpring Medicare Advantage HMO
  • Cofinity PPO
  • Coventry / FirstHealth
  • Coventry Health Care HMO
  • Coventry Health Care Open Access POS
  • Coventry Health Care POS
  • Coventry Health Care PPO
  • First Health Network PPO
  • FirstHealth / Coventry Personal Care
  • Galaxy Health Network PPO
  • Great West Healthcare - Cigna EPO
  • Great West Healthcare - Cigna PPO
  • HealthLink PPO
  • HealthSmart Preferred PPO
  • HST Care Connect EPO
  • HST Care Connect PPO
  • Humana Choice POS
  • Humana Community Select HMO
  • Humana HMO
  • Humana Illinois CCN HMO
  • Humana Medicare Advantage HMO
  • Humana Medicare Choice PPO
  • Humana Medicare Gold Plus HMO
  • Humana Medicare Supplement Plan
  • Humana MMAI
  • Humana National HMO
  • Humana National POS
  • Humana National POS - Open Access
  • Humana POS
  • Humana PPO
  • Medicare
  • Meridian
  • Meridian MMAI
  • MultiPlan PPO
  • SEIU – Local 4 HMO
  • SEIU – Local 4 PPO
  • Tricare Prime
  • UFCW Local 1546 Health and Welfare Fund (UMC)
  • UHC / AARP Medicare Advantage Value HMO - POS
  • UHC / AARP Medicare Complete HMO
  • UHC / AARP Medicare Complete Plan 1 HMO
  • UHC / AARP Medicare Complete Plan 2 HMO
  • UHC / AARP Medicare Supplement
  • UHC National Railway Carriers & United Transportation Union Health and Welfare
  • UHC Railroad Employees National Health & Welfare Plan
  • UHC/ AARP Medicare Advantage Choice PPO
  • UniCare PPO
  • Union Health Services, Inc.
  • Union Medical Care PPO
  • United Health One Golden Rule
  • United Healthcare Charter HMO
  • United Healthcare Choice Plus PPO
  • United Healthcare Choice PPO
  • United Healthcare Core PPO
  • United Healthcare Group Medicare Advantage PPO
  • United Healthcare Indemnity
  • United Healthcare Medica
  • United Healthcare Medicare Complete Assure PPO
  • United Healthcare Navigate HMO
  • United Healthcare NexusACO OA
  • United Healthcare NexusACO R
  • United Healthcare Options PPO
  • United Healthcare Oxford
  • Wellcare Health Plans HMO

Ratings and reviews

Overall rating

based on 250 patient ratings.


July 28, 2020 7:36 AM

Excellent follow-up to my surgery

July 13, 2020 9:54 PM

the provider was very simpathetic to my concerns

July 13, 2020 3:05 PM

Dr Dallas is an excellent doctor. Extremely professional.

June 29, 2020 11:26 AM

Dr. Dallas answered my questions and was very helpful.

June 29, 2020 11:26 AM

My experience with Dr. Dallas was good.

June 17, 2020 10:48 AM

Dr. Dallas is an excellent doctor and has excellent bedside manner. He always makes me feel calm during my visits.

April 7, 2020 5:45 AM

Dr. Dallas was prompt, clear, and encouraging. He graciously listened to my suggestions on how to improve. He demonstrated knowledge in his field.

April 7, 2020 5:45 AM

It is reassuring to have a patient doctor like Dr. Dallas.

March 29, 2020 8:17 AM

Doctor and staff were caring, informative, and professional. Only negative I would note is that my two week post op appointment was only available three weeks after surgery.

March 27, 2020 9:08 AM

This visit was a post surgery check up/remove staples. Never felt rushed, all questions answered.

March 27, 2020 9:08 AM

Dr. Dallas, and his assistant have been very comforting and helpful during this stressful time.

March 27, 2020 12:00 AM

Very pleasant and I understood the procedure of my surgery. (Excellent).

March 23, 2020 4:36 PM

Great service

March 23, 2020 4:36 PM

I really love the way they treated me

March 23, 2020 1:13 PM


March 23, 2020 1:13 PM

Dr. Dallas reception area - personal questions asked in an open area i.e.: DOB, are you on Medicare, when did you retire, personal questions asked in a loud tone, and then told "I'm just doing my job, with an attitude.

March 21, 2020 6:53 PM

It was excellent as I expected.

March 21, 2020 6:53 PM

he is a very nice and compassionate person.

March 11, 2020 7:30 AM

I would rate my experience with the provider in question, Dr. Dallas as not a very positive experience. He attended to me in a quick matter, seemed some what dismissive to my concerns. He left the room quickly before I had a chance to ask him any questions.

March 9, 2020 11:48 AM

Staff & doctor always professional.

March 9, 2020 11:48 AM

The overall experience of the months from surgery to last chemo - well planned & ran smoothly - very impressed - (third cancer).

February 25, 2020 12:30 PM

Dr. Dallas is incredible. I find him easy to talk to about my cancer. He takes that extra step to not only discuss the physical implications, but how it effects me on managing my life.

February 25, 2020 12:30 PM

Caring. Knowledgeable. Skilled. A blessing to me. And my husband. He has helped me on this chapter in my life to the "Nth degree."

February 25, 2020 9:07 AM

Dr. Dallas answered all of my questions. The surgical procedure he performed on me was way above average. I looked at Youtube videos of people that had had the same procedure and mine was basically pain-free. I would recommend him to anyone that had the same problem as me.

February 25, 2020 9:07 AM

Very good experience.

February 24, 2020 4:53 PM

Dr. Dallas demonstrated his knowledge and passion in the field of medicine. but most importantly it gave me security and confidence at all times. thanks to him I am calm waiting for my surgery

February 15, 2020 6:08 AM


February 4, 2020 3:56 PM

Dr. Dallas is an excellent surgeon recommended to me by my regular doctor.

February 4, 2020 3:56 PM

very good experience all around from first consultation to scheduling the surgery and the actual surgery and follow up appointment

January 27, 2020 1:35 PM

he was very courteous and friendly

January 6, 2020 2:29 PM

Dr. Dallas is one of the most wonderful doctors I have ever encountered in my entire life. There aren't enough adjectives to describe how wonderful he is. He also has the best bedside manner! It literally saved my life! There's really no way to thank somebody for that.

December 23, 2019 1:34 PM

excellent from start to finish

December 15, 2019 9:32 PM

I see Dr. Dallas now to discuss my CT scans and blood work results for my cancer. He answers any and all of my questions or concerns.

December 10, 2019 1:10 AM

Dr. Dallas is efficient.

December 10, 2019 1:10 AM

The surgery team was attentive, skilled and efficient.

December 9, 2019 2:08 PM

good experience. knowledgeable with answers that were easy to understand.

November 17, 2019 11:00 PM

This VISIT which was my FIRST! However I do not feel it fair to the doctor or patient to ask for opinions, only after one initial visit.

October 27, 2019 7:00 PM

Everyone in the office is very personable-very nice-very polite. He is a terrific doctor. Also personable, nice and takes the time to talk. I never feel rushed with him, explains everything that is going on (or had gone on). Thumbs up to all.

October 13, 2019 7:00 PM

it was wonderful. doctor Dallas was extremely thorough and patient

September 19, 2019 7:00 PM

Always a good experience.

September 18, 2019 7:00 PM

Waited over an hour to be met with for 10 minutes. Dr. Dallas spoke incredibly fast and did not address my concerns or even make me feel like I could fully express my concerns. He seemed to be eager to get in & out I left incredibly frustrated & almost in tears. I had waited months to see the specialist & have a comprehensive conversation about this issue that potentially needed surgery & I was treated like I was on an assembly line.

September 9, 2019 7:00 PM

Dr. Nikolaos A. Dallas and all his personal members are wonderful, great people.

August 30, 2019 7:00 PM

Dr. Dallas and his staff were courteous, kind, and understanding.

August 25, 2019 7:00 PM

Was very good they treated me very good.

August 15, 2019 7:00 PM

Dr. Dallas is truly an incredible dr. His care & his emotional support is one of the reasons I'm still here. He & his nurses are A+++.

August 13, 2019 7:00 PM

Dr. Dallas always greets you with a smile and that make you feel comfortable.

August 2, 2019 7:00 PM

the nurse was very friendly and professional. dr dalllas was very informative, answered my questions, and made me feel at ease.

July 29, 2019 7:00 PM

very good experience, very professional

July 28, 2019 7:00 PM

very knowledgeable about my health issues

July 25, 2019 7:00 PM

All very good. Thanks.

July 8, 2019 7:00 PM

Very good.

June 28, 2019 7:00 PM

Dr. Dallas is an exceptional provider. He is knowledgeable and very easy to have a conversation and for making me feel like my health really matters.

June 16, 2019 7:00 PM

overall great experience with the provider, I'm just waiting on the results of the test we ran at the office appointment

June 12, 2019 7:00 PM

I felt very confident during my visit. He was so friendly and kind.

May 28, 2019 7:00 PM

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

May 20, 2019 7:00 PM

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

May 16, 2019 7:00 PM

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

May 10, 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.

May 3, 2019 7:00 PM

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

April 26, 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.

April 21, 2019 7:00 PM

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

April 15, 2019 7:00 PM

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

March 24, 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.

March 24, 2019 7:00 PM


March 23, 2019 7:00 PM

Dr. Dallas was great, fixed me right up.

March 17, 2019 7:00 PM

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

March 7, 2019 6:00 PM


February 22, 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

February 6, 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.

February 4, 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.

February 2, 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.

January 29, 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

January 28, 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.

January 27, 2019 6:00 PM

I always have a good experience whenever I go.

January 26, 2019 6:00 PM

he is very caring and excellent.

January 24, 2019 6:00 PM

Dr. Dallas was very professional, compassionate and supportive.

January 24, 2019 6:00 PM

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

January 24, 2019 6:00 PM

Very professional and courteous staff. Always friendly and welcoming.

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.

January 13, 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 .

January 13, 2019 6:00 PM

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

January 13, 2019 6:00 PM


December 16, 2018 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.

November 28, 2018 6:00 PM

Very good.

November 23, 2018 6:00 PM

The doctor was very helpful.

November 19, 2018 6:00 PM

Dr. Dallas is the best!

November 15, 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.

November 5, 2018 6:00 PM

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

October 22, 2018 7:00 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.

October 20, 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.

October 20, 2018 7:00 PM

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

October 12, 2018 7:00 PM

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

October 9, 2018 7:00 PM

It went well, I have no complaints.

October 2, 2018 7:00 PM

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

September 28, 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.

September 18, 2018 7:00 PM

Very good.

September 5, 2018 7:00 PM

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

August 27, 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.

August 11, 2018 7:00 PM

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

July 31, 2018 7:00 PM

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

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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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