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Mark Jonker, MD

Mark Jonker, MD

Bariatric Surgery

Provider Ratings

4.9 out of 5 (170 ratings)

Speaks

Languages

English

Provider Groups

  • Bariatric Provider Group

  • Trinity Health IHA Medical Group

  • Trinity Health Medical Providers

Primary Contact

(517) 545-6011
Schedule Online
Appointments (New Patients Welcome)
Schedule Online
Provider Groups

  • Bariatric Provider Group

  • Trinity Health IHA Medical Group

  • Trinity Health Medical Providers

Primary Contact
(517) 545-6011
Print Share

Services & Specialties

Areas of Specialization

  • Bariatric Surgery

Locations & Contact

Primary Location

Trinity Health IHA Medical Group, General Surgery - West Arbor

4350 Jackson Rd
Ste 350
Ann Arbor , MI 48103

View hours
Monday
8:00am - 5:00pm
Tuesday
8:00am - 5:00pm
Wednesday
8:00am - 5:00pm
Thursday
8:00am - 5:00pm
Friday
8:00am - 5:00pm
Trinity Health IHA Medical Group, General Surgery - West Arbor
(517) 545-6011 View Details

Trinity Health IHA Medical Group, General Surgery - Genoa

2305 Genoa Business Park Dr
Ste 120
Brighton , MI 48114

View hours
Monday
8:00am - 5:00pm
Tuesday
8:00am - 5:00pm
Wednesday
8:00am - 5:00pm
Thursday
8:00am - 5:00pm
Friday
8:00am - 5:00pm
Trinity Health IHA Medical Group, General Surgery - Genoa
(810) 494-6881 View Details
Schedule Online

Trinity Health IHA Medical Group, General Surgery - Livingston Campus

620 Byron Rd
Ste 1200
Howell , MI 48843

View hours
Monday
8:00am - 5:00pm
Tuesday
8:00am - 5:00pm
Wednesday
8:00am - 5:00pm
Thursday
8:00am - 5:00pm
Friday
8:00am - 5:00pm
Trinity Health IHA Medical Group, General Surgery - Livingston Campus
(517) 545-6011 View Details

Also Affiliated With...

About

Dr. Jonker is board certified in surgery by the American Board of Surgery. He completed a fellowship in minimally invasive and bariatric surgery at the University of Massachusetts Medical School in Worcester, Massachusetts and another fellowship in mucosal immunology and nutrition at the University of Wisconsin in Madison, Wisconsin. He received his medical degree from the Medical College of Wisconsin in Milwaukee, Wisconsin and completed his residency at the University of Wisconsin Hospital and Clinics in Madison, Wisconsin.

Insurances Accepted

  • Aetna Better Health Medicaid
  • Aetna Commercial ALL PLANS
  • Aetna Medicare Advantage ALL PLANS
  • BCBS of Michigan Federal / Traditional
  • BCBS of Michigan Medicare Advantage PPO
  • BCBS of Michigan PPO Commercial
  • BCN Medicare Advantage
  • BCN of Michigan HMO
  • BCN of Michigan M Premier Care HMO
  • Blue Cross Complete of Michigan - Medicaid
  • Cofinity (Network)
  • Colleague Health Plan
  • Community Care
  • HAP Alliance Health & Life Commercial
  • HAP Alliance Health & Life Medicare Advantage
  • HAP Empowered (Medicaid)
  • Humana Medicare Advantage ALL PLANS
  • McLaren Commercial ALL PLANS
  • McLaren Medicaid
  • McLaren Medicare Advantage ALL PLANS
  • Medicaid - Michigan
  • Medicare (Traditional)
  • Meridian Commercial ALL PLANS
  • Meridian Medicaid
  • Molina Medicaid
  • Multiplan PHCS (Network)
  • Physicians Health Plan (PHP)
  • Physicians Health Plan (PHP) Medicare Advantage
  • Physicians Health Plan (PHP) Michigan Cares Network
  • Priority Health / Cigna Commercial
  • Priority Health / Cigna Medicare Advantage
  • Priority Health Medicaid
  • Railroad Medicare
  • Tricare (Humana Military) Non-Prime Plans
  • TRICARE (Humana Military) Prime
  • United Healthcare Commercial ALL PLANS
  • United Healthcare Community Plan (Medicaid)
  • Veterans Affairs Community Care Network
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Conditions Treated

  • General Surgery
  • bariatric surgery
  • MBI

Education & Certifications

Education

Fellowship:
University of Massachusetts Medical Center

Medical School:
Medical College of Wisconsin

Residency:
University of Wisconsin Hospitals and Clinics

Board Certifications

American Board of Surgery

Provider Groups

Bariatric Provider Group

Trinity Health IHA Medical Group

Trinity Health Medical Providers

Provider Ratings

The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy. Learn More >

4.9 out of 5

(170 ratings)

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

91 Reviews

10/11/2024

Absolutely love the doctors and nurses at Trinity Health!!

10/07/2024

Always thoughtful and cares for his patients

09/21/2024

I was lucky to have Dr. Jonker do my emergency appendectomy. He explained everything and made me feel at ease. My follow-up visit was great. He answered all my questions and I feel he really cared about me as a person.

08/19/2024

Always prepared and ready with answers.

08/01/2024

The provider was courteous and understanding, never talked down to me

05/26/2024

Dr. Jonker is caring and understanding. Listened will to my concerns. His staff is so helpful too.

04/09/2024

Excellent surgeon, I've had an excellent outcome, would 100% recommend!

03/26/2024

Very nice people!

02/29/2024

Dr Jonker and his team are the best

02/06/2024

I’ve had nothing but excellent experiences with Dr. Jonker. His calm and collected demander is very relatable for me and makes me feel comfortable. I love that I never feel rushed with Dr. Jonker, either. I feel listened to and respected, and we always have plenty of time to go over questions, which I never feel silly for asking. 10/10 would recommend.

02/05/2024

I love that I never feel rushed with Dr. Jonker, I feel listened to and respected.

01/22/2024

Warm and genuinely concerned

01/02/2024

Good bedside manner

12/22/2023

Very happy with care i received.

12/11/2023

Overall great surgeon/doctor.

12/04/2023

I would recommend anyone I love to go to Trinity. The care I received was bar none!

11/30/2023

Dr is very personable

11/28/2023

I am happy and grateful for the oportunitty to have the procedure with them.

11/07/2023

Dr.Jonker is an outstanding physician, I am extremely pleased with all my direct contact with him. I am unhappy with others in his office

05/24/2023

Very caring and supportive. Went above and beyond when I had an emergency a few years back. I drive an hour to see him because he is exceptional

04/23/2023

Dr. Jonker is friendly and doesn't mind answering my questions. He never seems annoyed and treats me with genuine courtesy.

04/18/2023

Very caring bedside manner, hard to find these days!

04/16/2023

Dr. Jonker is top tier.

03/29/2023

Just want to thank the Ann Arbor office for saving me a lot of tears

03/24/2023

They did move me up when my concerns for a summer vacation, The staff was amazing.

03/21/2023

Explained everything Great!!

03/19/2023

Staff is excellent and as a team this provider is the very best.

03/11/2023

We have plan on future surgery.

03/08/2023

Dr Jonker and staff have been great... and I am happy with the whole experience and especially the weight loss I have had so far!

03/07/2023

I loved everything about this provider!

03/03/2023

My provider was extremely knowledgeable and compassionate about his work. He made sure I understood all the information and instructions I was given. His bedside manner was exceptional.

01/26/2023

Thanks for all you help and support!

01/22/2023

It has been a very positive experience, the staff and dr are very caring and positive.

01/20/2023

I reccomend him to anyone who is looking for a good doctor needing his skills!

01/20/2023

He seemed very knowledgeable, and realistic, took the time to listen and answer all my concerns.

01/17/2023

very happy with him

01/04/2023

I was very happy with the time he took to answer my questions

12/18/2022

Took great care of me. Fixed

12/09/2022

Was very helpful and answered all my questions

11/29/2022

I love Dr Jonker. He is caring and knowledgeable.

10/04/2022

Positive experience

09/13/2022

very nice people

08/31/2022

Best and clearest hospital stay ever thank you so much. All the medical staff were caring professional.

08/03/2022

they were nice and professional

07/22/2022

Absolutely amazing. So good that i wish this was my everyday Dr.

07/15/2022

Prompt, patient! (I'm not the best @ Zoom!) Answered all my questions. Explained all the available weight loss procedures! Answered all my questions about them & why he feels the gastric sleeve bypass, is the best for me. I'm looking forward to an in person visit. He made me feel like he understood about being overweight.

07/01/2022

I am very impressed w/the care, kindness, follow up with members. From *Dr. Jonkers office. I have not _____ cared for in a while.

06/30/2022

*Dr. Jonker & his team are the best!!

06/22/2022

This provider and staff was top of the line vey professional and cared about your needs I recommend him to anyone

06/06/2022

*Dr. Yonker is amazing. I trust him with my care.

05/31/2022

*Dr. Jonker is a wonderful caring doctor.

05/24/2022

*Dr. Jonker is an incredible surgeon, doctor - incredible person! He has always been attentive respectful and listens. He is a true blessing to have as my doctor and I would recommend him to everyone. Professional, down to earth and provides great care!!! Because of him I am losing weight and gaining my healthy life back in many areas. Truly a remarkable doctor that I trust and respect. Thank you.

05/17/2022

He is an excellent listener and very caring

05/17/2022

Only just started seeing him I like him a lot

05/05/2022

Great visit.

04/22/2022

Excellent.

04/05/2022

Dr Jonker is one of the best doctors I have had since I can remember. Everyone who has received services from him agree. He listens, informs his patients of anything that may help them be their healthiest and most successful before, during and after surgery.

02/18/2022

Respect and understanding.

02/18/2022

Wonderful dr. & staff! So kind, honest and sensitive.

02/16/2022

Dr. Jonker and his team are great. They are all very supportive caring. Mackenzie is phenomenal, she is responds quickly to questions and is such a great resource for this new way of life.

01/31/2022

Dr. Jonker is the best! He listens well and cares a lot. He changed my life! Thank you!!!

01/25/2022

The surgeon has really helped me throughout the last year especially when I had an emergency concern arise a few months ago. Highly would recommend him to anyone

01/24/2022

Dr Jonker and his staff are the best health care providers I have ever experienced! They are genuinely caring, compassionate, friendly, professional, customer service oriented and competent. They are the best!! Job well done!

12/25/2021

I have had an overall great experience.

12/21/2021

I am extremely satisfied with the care I receive from Dr Jonker and his team. They are excellent.

12/18/2021

Knowledgeable Professional kind compassionate excellent doctor

12/03/2021

Follow-up visit to emergency surgery - I am lucky to have gotten *Dr. Jonker.

11/29/2021

Very friendly and kind

11/28/2021

Felt very comfortable talking with Dr. Jonker, he seemed to be interested about my concerns and explained things. I did not feel rushed with him. He made sure that I did not have any more questions before leaving the room.

11/26/2021

Excellent physician. He is Very compassionate and knowledgeable about the various types of bariatric surgeries. He listens to my thoughts, questions and concerns and is always sure to answer them for me.

11/22/2021

*Dr. Jonker has been my surgeon for 15 months & I cannot rate high enough. The courtesy, the respect & general interest he shows is rarely found these days & should be the standard & not the exception in health care. he would be my PCP if he could be!!

11/18/2021

The dr. needed to provide more information. I didn't know what questions to ask.

11/15/2021

Office frequently reschedules appointments.

11/12/2021

Dr. Jonker makes me feel heard and addresses all my concerns. He lays out all options and explains them well - I feel great about his advice and well informed to make my own decisions about my treatment path.

10/29/2021

The doctor and staff were all kind and kept me informed.

10/28/2021

Dr. Jonker is very kind caring & listens and will keep explaining until I understand.

10/15/2021

This was a good experience. Everyone was really nice and helpful.

10/01/2021

Very kind, thoughtful. Surgery went well, explained to my satisfaction.

09/28/2021

*Dr. Jonker & team are AWESOME!

09/21/2021

It took 30 plus minutes to see Dr. J.

09/02/2021

Dr. Jonker and his team are wonderful. So professional and I feel so well cared for every time I interact with anyone at the office.

08/31/2021

Mackenzie, Wendy Dr Jonker all.amazing

08/28/2021

I immediately noticed the professional, warm, confident and caring personality that Dr. Jonker projected the minute he walked in the room; his sensitivity and understanding regarding my questions and concerns, warm and friendly atmosphere which in turn provided ease and comfort during my follow up appointment.

08/02/2021

He was very nice

08/01/2021

Very knowlegable and caring doctor. He will perform my surgery.

07/30/2021

Dr. Jonker is always great!

07/29/2021

Good, getting ready for upcoming surgery.

07/05/2021

First time meeting him. Very friendly and helpful. Nice guy. He explained everything to me in detail, some of which I forgot and will talk to him about it.

07/04/2021

Never saw the doctor after surgery. Only saw the PA.

06/21/2021

Dr. Jonker was the first doctor to order diagnostic tests when he heard all of my symptoms very thankful for him.

06/16/2021

All very thoughtful.
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Schedule Online (517) 545-6011

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