Jonathan Thelen PA-C

Jonathan Thelen PA-C obtained his Bachelor of Science Degree in human biology with a specialization in health promotion from Michigan State University in May 2007. He then attended Central Michigan University and graduated with a Master’s Degree and Certification in Physician Assistant Studies in July 2009. He has been with Digestive Health Institute since 2009. He also holds the position of the Mid-Level Provider Coordinator.

What our patients have to say:

Kathy M.
1 week ago
My PA Scott did a fantastic job of going over my records with me, making the transition to a new doctor and PA so much more comfortable. Change can be difficult when you've been seeing the same doctor for years and have developed a solid relationship with your doctor and his/her assistants. I have also spent time with Amanda, who is so personable and understanding. Dr LeeAllan is also very thorough and thoughtful, and she takes the time to listen and weigh out a 'course of treatment'. I'm feeling way better about Dr. Walling's retirement!
Response from the owner:We are so glad you had a great experience, thank you for trusting our care team.
Stefan G.
2 weeks ago
The staff at the Digestive Health Institute | Gastroenterology is a remarkable group of people. Let’s be honest, nobody looks forward to seeing a gastroenterologist, so when the staff at a medical practice—the ENTIRE staff—is kind and helpful, patients are going to feel more comfortable being there. That is the hallmark of patient-centered care, and it’s what I experienced at the Digestive Health Institute | Gastroenterology. The intake person at the front desk was pleasant, helpful and efficient. I was struggling with my allergies and needed water, and after directing me to the water fountain, he offered me a cup. While that’s a small gesture, it demonstrated real consideration. My medical history was taken by a staff member who was engaging and friendly. I saw a medical resident who spoke with me about why I was there. I gave her some of my history, and then I saw Jannel Lee-Allen. Dr. Lee-Allen has a remarkably good bedside manner. She showed concern while at the same time being direct. Hearing things that are potentially unpleasant are sometimes best said in a direct way, and I value that. Dr. Lee-Allen was clear and concise and direct, but her clarity was infused with a sense of humor. Again, that’s putting a patient at ease. I had to schedule a procedure, and that involved spending a lot of time with the scheduler. She took the time I needed. I never felt rushed. The time it took was based not on her getting to the next patient. It was about what I needed and making sure I understood everything about preparation for an upcoming procedure. I struggled to understand some things, and I needed her to go over them several times. The scheduler, however, was reassuring, telling me she would take the time necessary. She wanted to make sure I understood what was happening. This is another example of how the Digestive Health Institute | Gastroenterology believes in patient-centered care—something they demonstrated that every step of the way.
Grammawin P.
1 month ago
Registration easy and quick. Wait time minimal. MA assessment thorough by a respectful young lady. Jonathon PA and Erin PA were wonderful: listened, allowed for my input and collaborated with me for a plan that made me feel heard and informed. Great job!
Paul W.
1 month ago
Dr. Hiatt listened to me. He was very thorough in his explanations and didn't talk down to me. It was very difficult just finding a gastroenterologist and he was very knowledgeable and sensitive.
Thomas G.
1 month ago
Scott the PA that I saw on Saturday, May 19, 2026 was very knowledgeable and he answered both mine and my wifes questions very thoroughly and professionally. The treatment plan was also very clear. I hope seeing patients on Saturdays is permanent.
Janelle M.
1 month ago
Dr Janelle Lee Allen is excellent thorough medical professional & Johnathan Thelen is top notch PA. I recently met with both of them for 1st time & positive experience!
Demphna K.
2 months ago
The care and kindness from every member of the staff at DHI is exactly what everyone patient needs. I am seeing Dr. Jones and Donald Laird for my excellent care! Thank you all
Joan M.
3 months ago
The PA who I met with was excellent. It was obvious that he had carefully read my CTScan before we met. He listened to me and had good rapport. I walked out of his office with a prescription for the meds I needed.
Jonathan Thelen PA-C White Background