Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Gilbert Tennyson, BSW

Mental Health Counselor in Fairfield, IL · enumerated 2007.

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

National Provider Identifier

1417145129

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. Gilbert Tennyson

Credential BSW

Sex Male

Practice address 407 North Basin Rd, Fairfield, IL, 62837

Phone (618) 842-2125

Fax (618) 842-4154

Enumeration date Oct 9, 2007

Last updated in NPPES Nov 6, 2007

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Primary

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

Where does Gilbert Tennyson practice?

The practice location on file with NPPES is in Fairfield, IL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Gilbert Tennyson?

The National Provider Identifier (NPI) for Gilbert Tennyson is 1417145129, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-06.