Dr. John F. Quertermus, MD | Kalamazoo, MI | Gastroenterologist

.about .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. John Quertermus is a gastroenterologist with 55 years of experience treating digestive system disorders. They earned their medical degree from Loyola University Chicago Stritch School of Medicine and completed their residency at the University of Illinois Hospital & Health Sciences System. Dr. Quertermus communicates with patients in English.

Dr. Quertermus practices at Bronson Methodist Hospital and sees patients in Kalamazoo, Michigan. With more than five decades in medicine, they bring extensive knowledge to patient care. Patients have given Dr. Quertermus an average rating of 4.3 out of 5 on Vitals, reflecting their commitment to quality healthcare.

Overview based on verified provider data

accepting new patients
4.3

26 Ratings
55 years of experience
speaks English
University Of Illinois Hospital & Health Sciences System
10 written reviews
1 specialty
10 areas of expertise
1 hospital affiliation
2 office locations

26 ratings & reviews

Sort:

Showing 1 to 10 of 10 reviews

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

very nice guy to talk with

November 9th, 2018

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

The best doctor ever!! Very friendly, great bedside manner, and really knows his stuff! Quality of a John Hopkins or Mayo doctor.

April 6th, 2016

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Have seen him for 34 years. He is the best.

February 3rd, 2016

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

highly recommend Dr Q.

June 29th, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Best gastroenterologist doctor ever. Great Bedside manners!

April 21st, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Highly ecommend

April 14th, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

I have been a patient of this doctor for years, and had my son go to him as well. I well remember the very first time he did a duodenoscopy on me; I was so scared because I had never been put to sleep before! But he just talked about everything else, and gave me his full undivided attention, and meanwhile I fell asleep. Every time I have had him, he acts like I am his only patient. I trust every thing he tells me!

February 3rd, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

I have been a patient of this doctor for well over twenty five years and would recommend him to anyone who is in need of gastroenterologist. He is through, kind, and compassionate. In fact even though I live over fifty miles away he is still the only doctor I would trust with my gastrointestinal care.

March 30th, 2014

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

I just had a tumor removerd that was suspected of growing for 4 years that Dr. Quertermus missed during colonoscopy.

June 9th, 2011

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

This doctor is thorough, conscientious, and cares about his patients. You NEVER feel rushed during an office visit with this doctor. He listens to and responds to all of the concerns of a patient. He readily offers advice to ease the medical problems that you are experiencing & prescribes appropriate medications if they are needed. He is thorough and shows that he cares for each patient that comes to see him. I would recommend him WITHOUT HESITATION to any patient needing gastroenterological care.

March 23rd, 2010

Bronson Adult Gastroenterology Downtown

601 John St Ste M-302Kalamazoo, MI 49007

Tel: (269) 276-0000

Mon8:00 am - 4:30 pm

Tue8:00 am - 4:30 pm

Wed8:00 am - 4:30 pm

Thu8:00 am - 4:30 pm

Fri8:00 am - 4:30 pm

SatClosed

SunClosed

Dr. John F Quertermus

601 John StKalamazoo, MI 49007

Tel: (855) 618-2676


Dr. John F Quertermus, MD	Theresa Obonyano, APRN	Dr. Sarah Wasserman	Dr. Jerrold Steven Falk, MD
Gastroenterology	Gastroenterology	Gastroenterology	Gastroenterology
Accepts New Patients	Accepts New Patients	Accepts New Patients
4.3 (26 Ratings)	0 (0 Ratings)	0 (0 Ratings)	4.9 (8 Ratings)
55 Years of Experience			54 Years of Experience
No Virtual Visit Option	Virtual Visit Available	No Virtual Visit Option	No Virtual Visit Option
Speaks English	Speaks English	Speaks English
Kalamazoo , MI	SACRAMENTO , CA	Portage , MI	Kalamazoo , MI
Med School: LOYOLA UNIVERSITY CHICAGO STRITCH SCHOOL OF MEDICINE	Med School: The University of Texas Health Science Center at Houston		Med School: Loyola University Of Chicago Stritch School Of Medicine
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Accepts Medicare
Accepts Medicaid

Gastroenterology

Abdominal Pain
Acid Reflux Disease (Gastroesophageal Reflux / GERD)
Acid Reflux Disease (GERD)
Celiac Disease
Colonoscopy
Constipation
Hemorrhoids
Hepatitis C
Irritable Bowel Syndrome (IBS)
Ulcerative Colitis

EDUCATION & TRAINING

Residency

University Of Illinois Hospital & Health Sciences System

Medical School

LOYOLA UNIVERSITY CHICAGO STRITCH SCHOOL OF MEDICINEGraduated in 1971

Dr. Orhan Kahraman Atay, MD
Pediatrics
23 Years Exp | Kalamazoo, MI
(3)
Vicky Jo Gross
Nurse Practitioner
| Three Rivers, MI
(0)
Ashley Joanne Ross
Nurse Practitioner
| Kalamazoo, MI
(0)
Kaitlyn Renea Hill
Nurse Practitioner
| Grand Blanc, MI
(0)
Jillian Grace Little
Nurse Practitioner
| Portage, MI
(0)
Dr. Laura Beatrice Mary Vandervynckt
Pediatrics
4 Years Exp | Kalamazoo, MI
(0)
Dr. Sara Farran
Pediatrics
7 Years Exp | KALAMAZOO, MI
(0)
Kaitlin Danielle Dennett
Nurse Practitioner
| Portage, MI
(0)
Dr. Asem Khaled Abdullah Abu-Qamar
Pediatrics
6 Years Exp | KALAMAZOO, MI
(0)
Dr. William Francis Hanavan, MD
Gastroenterology
43 Years Exp | Portage, MI
(6)

Where is Dr. John Quertermus's office located?: Dr. John Quertermus's office is located at 601 John St Ste M-302, Kalamazoo, MI, 49007.
Which hospitals is Dr. John Quertermus affiliated with?: Dr. John Quertermus is affiliated with Bronson Methodist Hospital.
Does Dr. John Quertermus accept virtual/telehealth appointments?: Dr. John Quertermus has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Does Dr. John Quertermus accept my insurance?: You can see the insurance plans that Dr. John Quertermus accepts on their Vitals profile.
Is Dr. John Quertermus accepting new patients?: Dr. John Quertermus is accepting new patients on Vitals. View Dr. John Quertermus's profile on Vitals to make an appointment.

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.

Copyright © 2026 Vitals Consumer Services, LLC. US Patent No. 8, 694, 441. All Rights Reserved.
As more fully set forth in this website's terms of use . (1) nothing contained on or offered by or through this website should be construed as medical advice and should not be relied upon for medical diagnosis or treatment. Vitals Consumer Services, LLC ("Vitals"). the provider of this website, does not recommend or endorse any particular healthcare provider whose information or ratings appear on this website; and (2) Vitals has granted you a limited license to access and use this website for your own noncommercial use. You are not permitted to copy, reproduce, distribute, transmit, mirror, frame, scrape, extract, wrap, create derivative works of, reverse engineer, decompile or disassemble any part or aspect of this website.