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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MR. JOHN HARLAN STEWART MD
NPI 1316906449
Pathology - Anatomic Pathology & Clinical Pathology in Port Arthur, TX

Active since March 18, 2006
3600 GATES BLVD, PORT ARTHUR, TX 77642(409) 983-6360(409) 983-7637 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mr. John Harlan Stewart Md NPPES

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

MR. JOHN HARLAN STEWART MD (NPI 1316906449) is an individual anatomic pathology & clinical pathology provider in Port Arthur, Texas, licensed in Texas (F4566) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1316906449
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameMR. JOHN HARLAN STEWARTCredential: MD
Location Address3600 GATES BLVDPort Arthur, TX 77642
Mailing AddressPo Box 1603Nederland, TX 77627 · (409) 983-6360 · Fax (409) 983-7637
Phone(409) 983-6360
Fax(409) 983-7637
Sole ProprietorNo
Enumeration DateMarch 18, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1316906449 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in TX · F4566
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
3600 GATES BLVD, Port Arthur, TX 77642
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Other Providers at the Same Location NPPES 14

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

SOLITUDE EMERGENCY PHYSICIANS, PLLC
Emergency Medicine
3600 GATES BLVD
PORT ARTHUR, TX 77642
Jefferson County (469) 401-2386
BRANDY KOTZ FNP
Nurse Practitioner (Family)
3600 GATES BLVD, EMERGENCY ROOM
PORT ARTHUR, TX 77642
Jefferson County (409) 989-5124
PENNI L GUIDRY CRNA
Nurse Anesthetist, Certified Registered
3600 GATES BLVD
PORT ARTHUR, TX 77642
Jefferson County (409) 989-5170
DR. IVAN OMARI PHARM D
Pharmacist
3600 GATES BLVD
PORT ARTHUR, TX 77642
Jefferson County (409) 989-1149
LINDSEY TAYLOR FOWLER PA
Physician Assistant
3600 GATES BLVD
PORT ARTHUR, TX 77642
Jefferson County (800) 893-9698
COUNTRY ROAD EMERGENCY PHYSICIANS, PLLC
Emergency Medicine
3600 GATES BLVD
PORT ARTHUR, TX 77642
Jefferson County (469) 401-2386
TEXAS EM-I MEDICAL SERVICES PA
Emergency Medicine
3600 GATES BLVD
PORT ARTHUR, TX 77642
Jefferson County (409) 985-7431
SUSANNA ELIZABETH BLOSS NP
Nurse Practitioner
3600 GATES BLVD
PORT ARTHUR, TX 77642
Jefferson County (800) 893-9698

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 Stewart's NPI number?

The NPI number for John Stewart is 1316906449. It was assigned to this individual provider in the NPPES registry on March 18, 2006.

Where is John Stewart located?

John Stewart practices at 3600 Gates Blvd, Port Arthur, TX 77642. The listed phone number is (409) 983-6360.

What is John Stewart's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

When was this NPI record last updated?

The NPPES record for John Stewart 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 23 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.