NPI age
20 years
Enumerated 2006-03-18
● Active
Type 1 · Individual
MR. John Harlan Stewart, MD
Stewart is 1 of 6 pathology providers in Port Arthur and 1 of 1597 in Texas.
Primary specialty
Pathology
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2007-07-08
Source: monthly bulk 2026-05
Sole proprietor
Not specified
May be part of a larger org
How this provider compares
Across 1597 active pathology providers in Texas.
NPI age
20 years
≈ at median (19 yr)
State licenses
1 state
16% of peers hold multiple states
Subspecialties
0
37% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-03Enumerated in NPPES
2006
2026
Where they practice
Practice location
3600 Gates Blvd
Port Arthur, TX 77642
Mailing address
Po Box 1603
Nederland, TX 77627
Specialties
-
Pathology PrimaryA 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...
Practice context
Part of a multi-provider practice. 14 other active providers share this practice address in NPPES.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
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