Expertise in
9
conditions

Dr. John A. Walker

Gastroenterology
2510 NW Edenbower Blvd, Suite 112, 
Roseburg, OR 
Accepting New Patients
Referral may be required
Before you request
Expertise in
9
conditions
2510 NW Edenbower Blvd, Suite 112, 
Roseburg, OR 

Overview

John Walker is a Gastroenterologist practicing medicine in Roseburg, Oregon.

Dr. Walker is highly rated in 9 conditions, according to our data. His clinical expertise encompasses Esophageal Varices, Familial Adenomatous Polyposis, Turcot Syndrome, Endoscopy, and Liver Embolization.

He is actively involved in clinical research, co-authoring 25 peer reviewed articles. Dr. Walker is currently accepting new patients.

Specialties

Gastroenterology

Licenses

Internal Medicine in OR

Hospital Affiliations

Mercy Medical Center

Languages Spoken

English
Spanish

Gender

Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

Find your insurance
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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
ATRIO Health
  • MEDICARE MAPD
  • MEDICARE SNP
  • OTHER MEDICARE PART D
  • PPO
Blue Shield of California
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
BridgeSpan
  • EPO
  • HMO
Cambia Health Solutions
  • EPO
  • INSURANCE PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Moda Health
  • EPO
  • PPO
PacificSource
  • PPO
Premera Blue Cross
  • INSURANCE PLAN
  • MEDICARE MAPD
  • OTHER COMMERCIAL
  • PPO
Prominence Health
  • EPO
  • PPO
Regence
  • EPO
  • PPO
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 13 Less Insurance Carriers -

Locations

Centennial Gastroenterology Associates
2510 NW Edenbower Blvd, Suite 112, Roseburg, OR 97471

Additional Areas of Focus

Dr. Walker has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.

Non-Alcoholic Fatty Liver Disease
Nonalcoholic Steatohepatitis (NASH)

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

25 Total Publications

Rapid Response to Traumatic Vascular Injury: An Institutional Code Angio Protocol.
Rapid Response to Traumatic Vascular Injury: An Institutional Code Angio Protocol.
Journal: Seminars in interventional radiology
Published: November 17, 2025
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Frequently Asked Questions about Dr. John A. Walker

How do I make an appointment with Dr. John A. Walker?

You can book an appointment with Dr. John A. Walker by calling their office at 541-464-6260. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. John A. Walker a top-rated expert for Esophageal Varices?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. John A. Walker is classified as an Advanced expert for Esophageal Varices, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. John A. Walker specialize in?

While Dr. John A. Walker is a Gastroenterology, they have specific expertise in Esophageal Varices, Familial Adenomatous Polyposis, and Turcot Syndrome. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Gastroenterology.

Does Dr. John A. Walker participate in research or clinical trials?

Yes. Dr. John A. Walker has published 25 articles and abstracts on conditions like Esophageal Varices. You can view a list of Dr. John A. Walker's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. John A. Walker accept my insurance?

Dr. John A. Walker accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 541-464-6260 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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