Mr. James Warren Irwin Jr., R.PH.
Mr. James Warren Irwin Jr. is a Pharmacist provider (Pharmacist) practicing in Longview, TX, registered in the NPPES registry with NPI 1427281021 since 2009. The credential RPH stands for Registered Pharmacist. Practices at Gibson Sales Lp (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1427281021 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mr. James Warren Irwin Jr. |
| Credential | R.PH. |
| Sex | Male |
| Practice address | Longview, TX, 75604 |
| Phone | 9032970558 |
| Fax | 9032977496 |
| Enumeration date | 2009-08-29 |
| Last updated in NPPES | 2009-08-29 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 183500000X | Pharmacist | Primary | 18671 | TX |
RPH — Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential
Copy-ready billing details
Provider: James Irwin, R.PH. NPI: 1427281021 Taxonomy: 183500000X (Pharmacist) Address: Longview, TX, 75604
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1003867748 | Gibson Sales Lp | Organization | Community/Retail Pharmacy | Longview, TX |
| 1316655392 | Bryan Haygood | Individual | Pharmacist | Longview, TX |
Verify this record
Cross-check NPI 1427281021 against the authoritative CMS record: view Mr. James Warren Irwin Jr. on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2009-08-29.