NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. John Scott Gentry, O.D.

Optometrist in Johnson City, TN · enumerated 2006.

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

National Provider Identifier

1871549691

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Registry record

Entity type Individual (Type 1)
Name Dr. John Scott Gentry
Credential O.D.
Sex Male
Practice address Johnson City, TN, 37604
Phone (423) 722-1311
Fax (423) 926-0529
Enumeration date May 25, 2006
Last updated in NPPES Nov 23, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 827 (TN) 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
3596084 Other TN DMERC
48046 Other TN BLUE CROSS BLUE SHIELD

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.

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Frequently asked questions

Is NPI 1871549691 active?
Yes, as of the latest NPPES snapshot, NPI 1871549691 is active (record last updated 2015-11-23).
How do I verify John Gentry's NPI record?
Cross-check NPI 1871549691 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-11-23.