Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Internal Medicine Associates of Darien, P.C.

Internal Medicine Physician in Darien, CT · enumerated 2006 · authorized official Philip Negus, Physician.

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

National Provider Identifier

1376574947

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Registry record

Entity type Organization (Type 2)

Legal business name Internal Medicine Associates of Darien, P.C.

Practice address 36 Old Kings Hwy S, Suite 200, Darien, CT, 06820

Phone (203) 655-4484

Fax (203) 656-0701

Enumeration date Jul 5, 2006

Last updated in NPPES Jan 13, 2010

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Philip Negus

Title Physician

Phone (203) 655-4484

Other identifiers

Identifier	Type	State	Issuer
001222256	Medicaid	CT	-
001396614	Medicaid	CT	-
001355785	Medicaid	CT	-
110171891	Other	CT	RAILROAD MEDICARE PROVIDE
110220758	Other	CT	RAILROAD MEDICARE PROVIDE
001172683	Medicaid	CT	-
001236066	Medicaid	CT	-
110144792	Other	CT	RAILROAD MEDICARE PROVIDE
110218045	Other	CT	RAILROAD MEDICARE NUMBER

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2010-01-13. Verify at npiregistry.cms.hhs.gov.

Where is Internal Medicine Associates of Darien, P.C. located?

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

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-13.