Constance A. Pietrzak, MD

Specialty: Gastroenterology

Your health and safety is our top priority. Get COVID-19 info & vaccine information and see our visitor policy.

Constance A. Pietrzak, MD

Specialty: Gastroenterology

Independent practitioner Advocate Medical Group provider

Schedule an appointment

Have you seen this doctor before?

Please check all that apply to the patient:

- or -

Schedule now via phone

Schedule via LiveWell

- or -

Schedule now via phone



18210 South LaGrange Road

Suite 200

Tinley Park, IL 60487

Get directions

Office: 708-479-6636

Fax: 708-479-9460

Currently scheduling for this location

Primary location

17850 South Kedzie Avenue

Suite 2100

Hazel Crest, IL 60429

Get directions

Office: 708-957-4011

Fax: 708-957-4013

Make appointment at this location

Meet Constance A. Pietrzak, MD

About me

  • Polish
  • Barrett's EsophagusBowel DisordersColon CancerGastroesophogeal Reflux DiseaseIrritable Bowel Syndrome



  • Loyola University Medical Center, Gastroenterology
  • Loyola University Medical Center, Internal Medicine
  • Loyola Chicago Stritch School of Medicine

Board certifications

  • Gastroenterology

Hospital affiliations

  • Advocate Christ Medical Center
  • Advocate South Suburban 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 65 patient ratings.


November 14, 2019 11:00 PM

Dr. Pietrzak always shows genuine concern for my well being.

June 2, 2019 7:00 PM

I found the doctor informative, competent, and friendly. We talked over my concerns and gave me good advice. She suggested a procedure to check on my issue and me general health. I agreed and we scheduled it.

May 29, 2019 7:00 PM

Excellent experience I am always amazed at the warm consistent health care _____ all staff & Dr. Constance. I'm so grateful! Thank.

April 18, 2019 7:00 PM

I had a very good experience when I visited Dr. Pietrzak, she makes you feel comfortable and she has a excellent bedside manner; and she is a asset to her profession and God bless her.

February 18, 2019 6:00 PM

I thought she was very good hand but a great deal of knowledge for me. She explained everything perfectly. My score of 8 is because I guess by this being my first visit she had to warm up to me.

February 7, 2019 6:00 PM

Very nice hospital and provider. "God bless you" & thank you.

January 31, 2019 6:00 PM

I was offended by how the doctor treated me was NOT friendly at all seems like she had a bad morning my appt. was 8 AM, she was making me feel like I shouldn't be there, when I was REFERRED to her. I never will go back to her not good bedside manner. Rude & inconsiderate.

November 6, 2018 6:00 PM

It was very pleasant and so was my DOCTORS!

November 1, 2018 7:00 PM

She is very thorough.

September 12, 2018 7:00 PM

I really love my doctor "P"! Very helpful and informative! Relaxing and calming!

August 20, 2018 7:00 PM

Very good and _____ would visit her again.

July 29, 2018 7:00 PM

Very good.

July 29, 2018 7:00 PM


June 11, 2018 7:00 PM

It was great experience.

May 22, 2018 7:00 PM

The provider was great, and I would use her anytime, she was pleasant, knowledgeable and overall very helpful. I like her and her personality.

May 9, 2018 7:00 PM

Very good. Everyone was great.

March 19, 2018 7:00 PM

I left Dr. Pietrzak with a full, complete understanding of my medical problem and treatment I needed.

March 15, 2018 7:00 PM

Great doctor and great nurse. Dr. Constance was very reassuring and knowledgeable.

January 13, 2018 6:00 PM

I like was very professional.

December 28, 2017 6:00 PM

She explained the procedure I'm going to have thoroughly.

My health enews articles

More for your health

LiveWell app & website

Manage health and wellness for yourself and for everyone who counts on you – all in one place. Learn how it works

Safe Care Promise

Your health and safety is our highest priority at every step of the journey with us. See what to expect

Virtual visits

Seeing a provider from home is easier than ever. Get virtual care 24/7 or schedule a visit with your provider. Get started


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.

Is this your profile? Submit edits/updates.