Mari Baker, M.D.
Doctor Locations

Locations

Doctor Certifications

Board Certifications

American Board of Emergency Medicine

Staff Education

Undergraduate: Valparaiso University; Valparaiso, IN 
Double major: Biology and Chemistry
Minor: art history
Medical school: Southern Illinois University School of Medicine; Springfield, IL
Emergency Medicine Residency University of Illinois College of Medicine at Peoria
Chief resident 2005-2006

Family Information

My husband and I are recent empty-nesters and live in Morton.  I have 2 children in college.  We recently were “foster fails” to 2 small dogs, who have now officially joined our family alongside our other dog, cat and hedgehog.

Hobbies / Interests

Anything crafty that involves working with my hands.  I've taught myself to crochet, sew, make jewelry, macrame.  I enjoy photography workshops, especially those in National Parks that are focused on landscape.  I've attended Texas Coffee School and for a short time ran a small coffee business out of a custom-built tiny home.

Why did you choose your field?

I began my career in emergency medicine, a fast-paced field, but I particularly enjoyed being involved in patient care during their time of greatest vulnerability.  After my own cancer journey, things have shifted, yet I'm still focused on patient care in their time of need.  As I personally have experienced, once cancer treatment ends, the needs continue.  I'm also currently working toward my certification in obesity medicine, helping to minimize the metabolic syndromes that increase one's risk of cancer.

Why did you choose Illinois CancerCare?

My world was turned upside down when I was diagnosed with breast cancer after my very first screening mammography.  I had no family history and no symptoms.  It was a long, scary journey, but my team at Illinois CancerCare saw me through every step of the way.  I was so grateful for the care I received. I then started to reflect on my own recovery and survivorship.  I knew I needed to make some life changes, some very difficult, to aid in my healing process.  I'm looking forward to continuing my own journey and helping you along your way as well.

Do you have any advice to give patients after they have been diagnosed with cancer?

Give yourself some grace.  Your body has been involved in a battle, and it takes time to recover.  You don't always end up on the other side as the same person, and that's OK.  In a busy world, there's always something to do.  Don't forget to take care of yourself.  And never underestimate the power of sleep!

Patient Testimonials

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March 4, 2026

Dr Mari Baker is caring, respectful and friendly. She make you feel that you are important and not ignored. You know that you are in the best care. From the time you check in through checking out, everyone is friendly and caring. This gives you the feeling "I am going to get through this medical issue with all the support and care successfully!"

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March 5, 2026

Dr. Baker very nice and compassionate. Very easy to talk to. I trust her a 100 percent.

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March 7, 2026

Very thorough and knowledgeable. Takes the time to explain everything and answers all my questions. She even called me personally to give me important information. Also personally called another doctor that I see to coordinate care. Highly recommend!!

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March 7, 2026

Dr. Baker and staff are wonderful

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May 15, 2026

Very caring and compassionate staff

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May 15, 2026

Dr. Mari Baker has been very helpful, compassionate and knowledgeable. I greatly appreciate her.

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May 15, 2026

They were all so kind and through ❤️

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May 16, 2026

I have been seeing Dr Baker for 3 years now and just love her! She is kind and caring and never tries to hurry through my appointment. She listens to me and offers suggestions or solutions. She's the best!!!

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May 24, 2026

DR Baker is very personable and caring. She is also very knowledgeable and I have a great deal of confidence in her

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May 25, 2026

Dr. Baker is wonderful! She takes her time and answers all your questions. She's just amazing!!