JOHN D BARKER JR. M.D.
NPI 1063486975
Internal Medicine - Gastroenterology in Sioux Falls, SD

Active since February 15, 2006
1001 E. 21ST ST., STE. 501, SIOUX FALLS, SD 57105(605) 322-8630(605) 322-8631 Get Directions Write a Review

NPPES record last updated: December 19, 2008. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About John D Barker Jr. M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN D BARKER JR. M.D. (NPI 1063486975) is an individual gastroenterology provider in Sioux Falls, South Dakota, licensed in South Dakota (2210) and active in the NPI registry since February 2006.

NPPES Registry Identity

NPI1063486975
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameJOHN D BARKER JR.Credential: M.D.
Location Address1001 E. 21ST ST., STE. 501Sioux Falls, SD 57105
Mailing AddressPo Box 86370Sioux Falls, SD 57118-6370 · (605) 322-7510 · Fax (605) 322-6475
Fax(605) 322-8631
Sole ProprietorNo
Enumeration DateFebruary 15, 2006
Last NPPES UpdateDecember 19, 2008
NPI 1063486975 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License Licensed in SD · 2210
Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

1001 E. 21ST ST., STE. 501, Sioux Falls, SD 57105

Other Identifiers 19

Medicare UPIND25149SD
OtherHP32306SD · Healthpartners
Other8Z081BAMN · Blue Cross
Other160064MN · Ucare
Other2900237SD · Medica
Medicaid1920751IA
Other100013213SD · Rr Medicare
Other2210SD · Dakotacare
Other22274SD · Midlands Choice
Other23422SD · Sanford Health Plan
Medicaid315895100MN
Medicare PINS5566SD
Other0005566SD · Blue Cross
Other8Z081BAMN · Cc Systems/ Blue Plus
Medicaid6000972SD
Other769171017545SD · Preferred One
Other57105B002SD · Wps Tricare
Other526065SD · Araz/ America's Ppo
Medicaid46022474338NE

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Barker's NPI number?

The NPI number for John Barker is 1063486975. It was assigned to this individual provider in the NPPES registry on February 15, 2006.

Where is John Barker located?

John Barker practices at 1001 E. 21st St., Ste. 501, Sioux Falls, SD 57105. The listed phone number is (605) 322-8630.

What is John Barker's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for John Barker was last updated on December 19, 2008. NPI Profile syncs with the weekly NPPES data releases published by CMS.