Summary

Dr. John Mathis is a gastroenterologist and internal medicine physician who earned his medical degree from Indiana University School of Medicine. With five decades of experience in medicine, he brings extensive expertise to digestive health care and comprehensive internal medicine services. Dr. Mathis speaks both English and Spanish, allowing him to serve a diverse patient population.

Dr. Mathis practices at several locations throughout northern Indiana, including Memorial Hospital of South Bend, Saint Joseph Health System Plymouth Medical Center, and Saint Joseph Regional Medical Center in South Bend and Plymouth. He specializes in treating common digestive conditions such as colon polyps, hemorrhoids, and diverticular disease. His procedural expertise includes performing colonoscopies and both upper and lower gastrointestinal endoscopy procedures. Patients have given him an average rating of 4.1 out of 5 on Vitals.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.2
  • 50 years of experience
  • speaks English, Spanish
  • Indiana University School Of Medicine
  • 4 written reviews
  • 2 specialties
  • 11 areas of expertise
  • 2 board certifications
  • 4 hospital affiliations
  • 4 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. John Glenn Mathis has 4 locations

Mgi

17501 Generations DrSouth Bend, IN 46635
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 1:30 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 1:30 pm
SatClosed
SunClosed

Mgi

1919 Lake AvePlymouth, IN 46563
Mon8:00 am - 4:30 pm
Tue8:00 am - 4:30 pm
Wed8:00 am - 1:30 pm
Thu8:00 am - 4:30 pm
Fri8:00 am - 1:30 pm
SatClosed
SunClosed

Michiana Endoscopy Center

53830 Generations DrSouth Bend, IN 46635
Mon6:00 am - 5:00 pm
Tue6:00 am - 5:00 pm
Wed6:00 am - 5:00 pm
Thu6:00 am - 5:00 pm
Fri6:00 am - 4:00 pm
SatClosed
SunClosed

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Dr. John Glenn Mathis, MD
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Dr. John Glenn Mathis, MDAshley Anderson, APRNDr. Sheema ZafarDr. Dennis Leonard Vargo
GastroenterologyGastroenterologyInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients
4.2 
50 Years of Experience 13 Years of Experience 41 Years of Experience
No Virtual Visit Option Virtual Visit Available No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English
South Bend , INSacramento , CAElkhart , INCambridge , MA
Med School: Indiana University School Of Medicine Med School: East Tennessee State University - Quillen College of Medicine Med School: Jinnah Sindh Medical University Med School: Indiana University School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. John Glenn Mathis

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. John Glenn Mathis has the following 2 specialties

Specialty Expertise

Dr. John Glenn Mathis has the following 11 areas of expertise

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

Certifications, License, & Education

50 Years Experience

Dr. John Glenn Mathis holds an expired medical license in the state of Indiana.

Medical License

Medical Doctor with an expired medical license in the state of Indiana that expired in 2025.

Education & Training

Medical School

Graduated from Indiana University School Of Medicine in 1976.

NPI Number

Dr. Mathis' NPI number is 1427051341.

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Frequently Asked Questions

Is Dr. John Mathis accepting new patients?
Dr. John Mathis is accepting new patients on Vitals. View Dr. John Mathis's profile on Vitals to make an appointment.
Does Dr. John Mathis accept virtual/telehealth appointments?
Dr. John Mathis has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Does Dr. John Mathis accept my insurance?
You can see the insurance plans that Dr. John Mathis accepts on their Vitals profile.
Where is Dr. John Mathis's office located?
Dr. John Mathis's office is located at 17501 Generations Dr, South Bend, IN, 46635.
Which hospitals is Dr. John Mathis affiliated with?
Dr. John Mathis is affiliated with Memorial Hospital Of South Bend, Saint Joseph Health System Plymouth Medical Center, SAINT JOSEPH REGIONAL MEDICAL CENTER, and Beacon Childrens Hospital.

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