Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John David Grantham, PT

Physical Therapist in Knoxville, TN · enumerated 2006.

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

National Provider Identifier

1548355415

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Registry record

Entity type Individual (Type 1)

Name John David Grantham

Credential PT

Sex Male

Practice address 2120 Highland Ave, Knoxville, TN, 37916

Phone (865) 525-4131

Fax (865) 523-0086

Enumeration date Oct 4, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License PT0000002049 (TN) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

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

Is NPI 1548355415 active?

Yes, as of the latest NPPES snapshot, NPI 1548355415 is active (record last updated 2007-07-08).

How do I verify John Grantham's NPI record?

Cross-check NPI 1548355415 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 2007-07-08.