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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JOHN S JACKSON M.D.
NPI 1437140779
Internal Medicine - Gastroenterology in Fort Worth, TX

Active since November 04, 2005
6445 HARRIS PKWY, STE. 100, FORT WORTH, TX 76132(817) 361-6900(817) 263-2918 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. John S Jackson M.d. NPPES

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

DR. JOHN S JACKSON M.D. (NPI 1437140779) is an individual gastroenterology provider in Fort Worth, Texas, licensed in Texas (E1626) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1437140779
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. JOHN S JACKSONCredential: M.D.
Location Address6445 HARRIS PKWY, STE. 100Fort Worth, TX 76132-4138
Mailing Address6445 Harris Pkwy, Ste. 100Fort Worth, TX 76132-4138 · (817) 361-6900 · Fax (817) 263-2918
Phone(817) 361-6900
Fax(817) 263-2918
Sole ProprietorNo
Enumeration DateNovember 4, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1437140779 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 TX · E1626
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.
6445 HARRIS PKWY, Fort Worth, TX 76132
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Other Identifiers 2

Other85Y011Bcbs
Other4035105Aetna

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. NANDINI NAGARAJ M.D.
Internal Medicine (Gastroenterology)
6445 HARRIS PKWY, ST 100
FORT WORTH, TX 76132
Tarrant County (817) 361-6900
COWTOWN ANESTHESIA SERIVCES, L.L.P.
Nurse Anesthetist, Certified Registered
6445 HARRIS PKWY
FORT WORTH, TX 76132
Tarrant County (817) 294-7444

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 Jackson's NPI number?

The NPI number for John Jackson is 1437140779. It was assigned to this individual provider in the NPPES registry on November 4, 2005.

Where is John Jackson located?

John Jackson practices at 6445 Harris Pkwy Ste. 100, Fort Worth, TX 76132. The listed phone number is (817) 361-6900.

What is John Jackson'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 Jackson was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.