Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dianon Systems Inc

Q: What is the NPI number for Dianon Systems Inc?

The NPI for Dianon Systems Inc is 1245216357, a Type 2 (organization) record in the CMS NPPES registry.

Clinical Medical Laboratory in Uniondale, NY · enumerated 2005 · authorized official Kimberly Williams, Vp.

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

National Provider Identifier

1245216357

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Registry record

Entity type Organization (Type 2)

Legal business name Dianon Systems Inc

Practice address 51 Charles Lindbergh Blvd, Suite B, Uniondale, NY, 11553

Phone (516) 794-4646

Enumeration date Dec 20, 2005

Last updated in NPPES Feb 21, 2014

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name Kimberly Williams

Title Vp

Phone (800) 222-7566

Other identifiers

Identifier	Type	State	Issuer
33D1008287	Other	-	CLIA

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

Who is the authorized official for Dianon Systems Inc?

NPPES lists Kimberly Williams (Vp) as the authorized official for this organization.

What is the NPI number for Dianon Systems Inc?

The NPI for Dianon Systems Inc is 1245216357, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-21.