Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Robert Slider, OD

Optometrist in Levelland, TX · enumerated 2005 · practices at South Plains Rural Health Services, Inc..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1578557898

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Registry record

Entity type Individual (Type 1)

Name Dr. John Robert Slider

Credential OD

Sex Male

Practice address 1000 Fm 300, Levelland, TX, 79336

Phone (806) 894-7842

Fax (806) 894-3378

Enumeration date Aug 31, 2005

Last updated in NPPES Mar 14, 2014

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 1858-TG (TX) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
121513902	Medicaid	TX	-
093469702	Medicaid	TX	-

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 → Validate an NPI →

Frequently asked questions

How do I verify John Slider's NPI record?

Cross-check NPI 1578557898 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1578557898 active?

Yes, as of the latest NPPES snapshot, NPI 1578557898 is active (record last updated 2014-03-14).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-03-14.