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How Can We Help You?

Serving Our Community
Since 1998.

The Digestive Health Institute was established to provide excellence in the care of gastrointestinal and liver diseases for the people of mid Michigan. Our goal is to provide comprehensive and compassionate care to our patients. We strive to be efficient and cost-effective without compromising the quality of care of our patients.

We will remain in the forefront in technological advances in medicine and seek innovations in gastrointestinal medicine. Our achievements are attributed to our well-trained, professional, and compassionate staff and our continued success will be dependent on the continued excellence of our staff members.

About Us

Digestive Health Institute is the premier provider of colorectal, gastrointestinal, and liver care servicing mid-Michigan with 3 Board-Certified Colorectal Surgeons, 9 Board-Certified Gastroenterologists, and 7 Physician Assistants. We are focused on providing the highest level of quality care to our patients no matter what their level of gastrointestinal needs – from a routine colonoscopy to more advanced medical and surgical treatment of diseases and disorders of the colon, rectum, and anus.

In addition, our providers are involved in clinical research and medical education through our affiliation with Michigan State University, offering patients with the latest techniques and treatments in gastroenterology with the potential to improve health outcomes and quality of life.

Digestive Health Institute is a proud partner of Pinnacle GI Partners, a unique family of practices focused on transforming gastrointestinal care across the Midwest. This partnership allows our best-in-class providers to continue administering highly effective care to their patients while working alongside an organization focused on providing the best value in quality, cost, and experience.

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meet our doctors

The achievements of our practice are attributed to our well-trained, professional, and compassionate staff.

Learn more about the friendly and professional staff at Digestive Health Institute.

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The CDH Difference

Next Day Availability

5 Convenient Locations

Board Certified

AAHC Accreditation

Research Center

Infusion Center

Spartan Helmet


In 2000 Michigan State University gastroenterology divisions from the College of Osteopathic medicine and Human medicine joined Digestive Health Institute to combine clinical and educational forces. This unique relationship was coordinated to improve patient care, enhance education, and advance research in the area of gastroenterology.

To the best of our knowledge, a university and private practice have never undertaken this type of arrangement. All the physicians at Digestive Health Institute are affiliated with Michigan State University. We are involved with the education of medical students at the College of Osteopathic Medicine and the College of Human Medicine. We also train interns and residents at Ingham and Sparrow Hospitals.

Patient care is our priority, and with this affiliation we supply top-quality progressive patient care for mid Michigan.

For Our Patients

Find everything you need before an appointment. New and returning patients can get the answers to their questions in the FAQ section, or download resources to learn more about their procedure. Insurance information and new patient forms are also available.

patient information

About Procedures

At Digestive Health Institute we continually strive to provide the best care possible for our clients through the expertise and experience of our physicians and the use of cutting-edge equipment and methods in our procedures. This fall we are updating to the electronic health record (EHR) system in our latest effort to improve patient quality of care.

procedure details


Digestive Health Institute is participating in training future Gastroenterologists. These fellowship programs are based at Lansing’s two premier care hospitals and MGI providers are integral in part in that training while maintains strong ties to Michigan State University. These three year Osteopathic program is fully accredited and accepts new fellows yearly.

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Meet Our
Care Team

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What Our Patients are Saying

"Called and was able to get an appointment the next day had a wonderful experience great staff all around. Shoutout to Amanda for making me laugh at a nerve wrecking time in my life. Was able to be scheduled for my procedure Within two weeks! Excellent!"

-Brett C.

"I LOVE Dr. Ross and highly recommend him! He is knowledgeable and caring and explains things in terms that are understandable. He is personable and treats his patients with respect. Also, staff, especially Sal, is helpful and top notch - she responds quickly and is always willing to help! I can't imagine going anywhere else for these types of health services these people are the best at what they do and go above and beyond! Thank you!!!"

-Shari S.

"Dr Coleski was empathetic compassionate & respectful. He explained the procedure & post op in clear concise terms that we could understand what was going on. We call Dr Coleski a unicorn doctor… he has excellent bedside manner! Sidenote: Dr Coleski’s office was informative & scheduled an appointment in a timely manner. We will be referring everyone we know!! Thank you for the excellent experience."

-Kasey H.

Recent Articles

Increased parenchymal echogenicity at last ultrasound: What does it mean?

When your doctor sends you to get an ultrasound of your liver, they are checking for red flags to make sure that nothing is wrong with your liver. What kinds of red flags? Well, using an ultrasound, your doctor can look for cysts in your liver that may be causing you abdominal pain. An ultrasound […]

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Warning signs: When to see a gastrointestinal specialist

It’s usually not hard to figure out when you need to see a doctor. If you fell and broke your wrist, you wouldn’t wait to see if it gets better on its own. You’d be calling your doctor right away! However, when it comes to our digestive system, we often overlook the warning signs that […]

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Can ulcers affect bowel movements?

An ulcer is a sore that can develop in a few different areas inside the body. Most ulcers occur in the esophagus, the stomach and even in some cases the intestines. They happen when the acid from your stomach deteriorates the lining in any of these areas. Peptic ulcers, also known as stomach ulcers, affect […]

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Does an endoscopy diagnose celiac disease?

Celiac disease is an autoimmune disease that causes a reaction to gluten. It often involves inflammation of the intestinal lining, bloating and diarrhea. It can also prevent the proper absorption of nutrients into the body. If your doctor suspects you have celiac disease, they can recommend that you get an endoscopy. There are a variety […]

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Patient Portal

Use your online patient portal to easily fill out all of your new patient medical forms.  Our online portal will also make it convenient to see any bills and pay them online.

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