Summary

Dr. John Walker is a gastroenterologist with over five decades of medical experience, specializing in digestive system disorders and diseases. He earned his medical degree from the University of Texas Southwestern Medical School in Dallas and completed his internal medicine residency training at Jackson Memorial Hospital/Jackson Health, Medical College of Wisconsin Affiliated Hospitals Program, and Miami Affiliated Hospitals. Dr. Walker is board-certified in internal medicine by the American Board of Internal Medicine. He speaks English.

Dr. Walker practices at Centennial Gastroenterology Associates in Roseburg, Oregon, and maintains hospital affiliations with Mercy Medical Center, Saint Charles Bend, and Providence Medford Medical Center. His clinical expertise focuses on inflammatory bowel conditions such as Crohn's disease and ulcerative colitis. He also treats patients with colon polyps and performs specialized diagnostic procedures including pathology tests and tissue biopsies. Patients have given Dr. Walker an average rating of 2.3.
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Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 2.3
  • 53 years of experience
  • speaks English
  • Jackson Mem Hosp/Jackson Hlth, Internal Medicine
  • 2 written reviews
  • 1 specialty
  • 10 areas of expertise
  • 2 board certifications
  • 3 hospital affiliations
  • 1 office location
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis

Office Location

Centennial Gastroenterology Associates

2510 NW Edenbower Blvd Suite 112Roseburg, OR 97471
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
SatClosed
SunClosed

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Dr. John Walker, MDDr. Sorin Petre, MDDr. Surinder Vasdev, MDDr. Shaun McGowan
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients
2.3 
53 Years of Experience 36 Years of Experience 42 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English Speaks English
Roseburg , ORRoseburg , ORRoseburg , ORRoseburg , OR
Med School: University of Texas Southwestern Medical School, Dallas Med School: Carol Davila University of Medicine & Pharmacy Med School: University of London, The Middlesex Hosp Med Sch Med School: Duquesne University
Current Profile
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Insurance Plans Accepted by Dr. John Walker

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. John Walker has the following specialty

Specialty Expertise

Dr. John Walker has the following 10 areas of expertise

  • 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

Certifications, License, & Education

53 Years Experience

BOARD CERTIFICATIONS

American Board of Internal Medicine

Internal medicine

MEDICAL LICENSE

Medical Doctor, Oregon, 2025, Expired

EDUCATION & TRAINING

Residency

Jackson Mem Hosp/Jackson Hlth, Internal Medicine
Medical College of Wisconsin Affiliated Hospitals Program
Miami Affil Hosps1974

Medical School

University of Texas Southwestern Medical School, DallasGraduated in 1973

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Frequently Asked Questions

Is Dr. John Walker accepting new patients?
Dr. John Walker is accepting new patients on Vitals. View Dr. John Walker's profile on Vitals to make an appointment.
How can I make an appointment with Dr. John Walker?
You can find contact information for Dr. John Walker here on Vitals.
Does Dr. John Walker accept my insurance?
You can see the insurance plans that Dr. John Walker accepts on their Vitals profile.
Which hospitals is Dr. John Walker affiliated with?
Dr. John Walker is affiliated with Mercy Medical Center, Saint Charles Bend, and Providence Medford Medical Center.
Where is Dr. John Walker's office located?
Dr. John Walker's office is located at 2510 NW Edenbower Blvd Suite 112, Roseburg, OR, 97471.

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