Mark A. Jonker, MD

Trinity Health IHA Medical Group, Bariatric Surgery - Livingston Hospital
4.9 out of 5
153 reviews
Closed - Opens at 8:00 AM Monday
This provider is welcoming new patients
Welcoming New Patients
This provider is welcoming new patients
Welcoming New Patients
  • Bariatric Surgery
  • General Surgery
4350 Jackson Rd
Suite 350
Ann Arbor, Michigan 48103
US
2305 Genoa Business Park Dr
Suite 120
Brighton, Michigan 48114
US

Hours

Store Hours:

Day of the WeekHours
SatClosed
SunClosed
Mon8:00 AM - 5:00 PM
Tue8:00 AM - 5:00 PM
Wed8:00 AM - 5:00 PM
Thu8:00 AM - 5:00 PM
Fri8:00 AM - 5:00 PM
About Mark A. Jonker, MD

Mark Jonker, MD, is board-certified in general surgery. His clinical interests include minimally invasive and robotic general and bariatric surgery. He has been widely published in medical literature and is a reviewer for two medical journals.

Medical Education
  • Medical College of Wisconsin
Residency
  • University of Wisconsin Hospitals and Clinics
Fellowship
  • University of Massachusetts Medical School
Board Certifications
  • American Board of Surgery
Other Distinctions
  • American College of Surgeons
  • American Medical Association
  • Society of American Gastrointestinal and Endoscopic Surgeons
  • American Society for Metabolic and Bariatric Surgery
  • Michigan Bariatric Surgery Collaborative
Hospital Affiliations
  • Trinity Health Livingston Hospital

Michigan Bariatric Institute

Drs. Davies and Jonker see bariatric surgery patients at the Michigan Bariatric Institute located in Howell, Michigan at St. Joseph Mercy Livingston hospital.
Reviews for Mark A. Jonker, MD
Patients ratings and comments are gathered from our Qualtrics Patient Experience Survey and displayed in their entirety. Learn more about our survey process.
4.9 out of 5 (153 ratings, 33 comments)
Jun 27, 2025

All good

Qualtrics

Jun 20, 2025

Dr. Jonker and his staff are absolutely amazing. They treat you with the upmost respect and care. I would highly recommend their office to anybody.

Ratings.MD

Jun 5, 2025

Dr. Yonker is great!

Ratings.MD

May 16, 2025

My first encounter with Dr. Jonker was for an emergency appendectomy. He was the surgeon on that call that day and I’m so glad, as I later learned he was a bariatric surgeon. I wasn’t too familiar with bariatric surgery so when I went for my appendectomy follow-up, I was able to ask some questions and get to know him better. In our later meetings, Dr. Jonker proved to be very kind, compassionate, patient, and he had a great way of explaining things so that I could understand the process of how a SADI-S worked. I had absolutely zero qualms about having this surgery with him using a robot-assisted machine. My follow-up care has been exactly as expected - wonderful. I lost 81% of my excess weight using the SADI-S, which was his ultimate recommendation based on my presentation. I’ve maintained the loss for three years now following his guidelines and my health has corrected itself substantially (as proven by bloodwork). Perhaps the initial appendectomy was the best thing to happen to me, as the ultimate result of it completely changed my life. Thanks to Dr. Jonker I am finally enjoying living life! I couldn’t praise him enough for his skill and friendly bedside manner.

Ratings.MD

May 1, 2025

I do not answer surveys so for me to even respond to this says a lot Look foward to seeing all again

Qualtrics

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