Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John W Diering, OD

Vision Therapy Optometrist in Turnersville, NJ · enumerated 2006.

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

National Provider Identifier

1134165392

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Registry record

Entity type Individual (Type 1)

Name John W Diering

Credential OD

Sex Male

Practice address 900 Route 168, Suite E5, Turnersville, NJ, 08012

Phone (856) 227-0720

Fax (856) 227-8550

Enumeration date Jun 22, 2006

Last updated in NPPES Jun 4, 2008

Taxonomy & licenses

152WV0400X Vision Therapy Optometrist Eye and Vision Services Providers · License 04944 (NJ) 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
0921403005	Other	NJ	CIGNA
571436	Other	NJ	FIRST HEALTH
223048927	Other	NJ	BCBS
410026820	Other	NJ	RAILROAD MEDICARE
0426060000	Other	NJ	AMERIHEALTH
223713	Other	NJ	US FAMILY HEALTH PLAN
91001904200	Other	NJ	AMERICHOICE
1535501	Medicaid	NJ	-

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

What specialty is John Diering?

John Diering is registered in NPPES with the primary taxonomy of Vision Therapy Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-04.