Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dianon Systems Inc

Clinical Medical Laboratory in Woodbridge, CT · enumerated 2023 · authorized official Kimberly Williams, Vice President.

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

National Provider Identifier

1497437446

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Dianon Systems Inc

Practice address 12 Tallwood Rd, Woodbridge, CT, 06525

Phone (203) 926-7463

Fax (336) 436-1048

Enumeration date Aug 1, 2023

Last updated in NPPES Aug 23, 2023

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name Kimberly Williams

Title Vice President

Phone (336) 222-7566

Other identifiers

Identifier	Type	State	Issuer
07D2283699	Other	CT	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

Where is Dianon Systems Inc located?

The practice location on file with NPPES is in Woodbridge, CT.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2023-08-23. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-23.