Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ralph Barnett Mayfield, PT

Physical Therapist in Alton, IL · enumerated 2007.

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

National Provider Identifier

1598808586

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Registry record

Entity type Individual (Type 1)

Name Ralph Barnett Mayfield

Credential PT

Sex Male

Practice address 915 E 5th St, Alton, IL, 62002

Phone (618) 463-5171

Enumeration date Feb 15, 2007

Last updated in NPPES Sep 13, 2012

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 070010534 (IL) 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.

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Frequently asked questions

How do I verify Ralph Mayfield's NPI record?

Cross-check NPI 1598808586 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1598808586 active?

Yes, as of the latest NPPES snapshot, NPI 1598808586 is active (record last updated 2012-09-13).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-09-13.