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Mark Jonker, MD

Mark Jonker, MD

Bariatric Surgery

Provider Ratings

4.9 out of 5 (137 ratings)

Speaks

Languages

English

Provider Groups

  • Trinity Health IHA Medical Group

Primary Contact

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

  • Trinity Health IHA Medical Group

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 - 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

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 - 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

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

Trinity Health IHA Medical Group

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

(137 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.

26 Reviews

03/03/2025

Dr Jonker repaired my umbilical hernia. Everything turned out very well. I couldn't be more pleased with the way I was treated and his skill as a surgeon.

02/26/2025

The provide/Dr. Jonker & staff were excellent.

01/24/2025

Would recommend 100% with my experience so far.

12/16/2024

I never felt rushed and all my concerns were addressed

12/02/2024

Great job!

11/04/2024

Dr. Jonker is an excellent bariatric surgeon, and best of all, very humble.

11/01/2024

Outstanding experience!

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
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Schedule Online (517) 545-6011

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