Male 80 years


Dr. John D Barker, MD



Internal Medicine   -  South Dakota,  Sioux Falls

 Overview

Dr. John D Barker, MD works in Sioux Falls, South Dakota is a specialist in Internal Medicine, Gastroenterology and graduated St Marys Hospital in 1969. Dr. Barker is affiliated with Avera McKennan Hospital and University Health Center and practicing for 55 years

 Specialties

  • Internal Medicine
  • Gastroenterology

 Conditions

• Islet Cell Adenoma
• Shoulder Arthroscopy

 Procedures

• Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
• Endoscopy (Esophagus, Stomach, Small Intestine)

 Board Certifications

  • Board Certified by the American Board of Internal Medicine

 Years Since Graduation

  • 55

 State License

  • South Dakota

 Education & Training

Internship Hospital

St Marys Hospital

Rochester, NY, USA

Year completed: 1969

Fellowship Hospital

University Ia Hosps

Iowa City, IA, USA

Year completed: 1972

Medical School

University Of Minnesota Medical School

Minneapolis, MN, United States

Graduated: 1968

Residency Hospital

Wisc Med Center

Year completed: 1971

 Awards

1   AAS Ld
2   ACG
3   Ag Association
4   Association Cp
5   Association Sg E

 Dr. Barker Reviews

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 Office Locations


Primary location

 Avera Gastroenterology
1001 East 21st Street Suite 501
South Dakota (SD)
Sioux Falls
57105
 Phone:(605) 322-8630

Accepting New Patients

  • Yes
* Please verify this information when scheduling an appointment.

 Map & Directions



Avera Gastroenterology, 1001 East 21st Street Suite 501, Sioux Falls, South Dakota (SD), 57105




 Insurances Accepted (check insurance plans)

  • Cigna
  • Great West Healthcare-Cigna PPO

* Please verify this information when scheduling an appointment.

 Blog Posts

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 Patients Questions

Patients questions for Dr. John D Barker, MD are not present.

 Affiliated Hospitals


Avera McKennan Hospital and University Health Center photo


Avera McKennan Hospital and University Health Center

800 East 21st Street South Dakota SD, Sioux Falls, 57117

Avera McKennan Hospital and University Health Center is a hospital located in Sioux Falls, SD. Procedures/Diagnosis costs are at the state average in 7 of 9 procedures. Length of Stay is at the state average in 7 of 9 procedures.



  •  Latest reviews for Internal Medicine specialists

  • Dr. C. is a pleasant, professional caring and fun doctor. Answered all my questions on a keep it simple level and explained everything. He took his time. I will refer them when needed. What a great group!
    07 February 2024
    (6)
  • He is the best if you need help with panic attacks. He fixed up my medication and I feel better.
    31 January 2024
    (40)
  • Dr. Jungblut and staff are all professional, fun, conscientious. Been going here for a long time. My children and grandchildren now see Dr. Jungblut too.
    24 January 2024
    (7)
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