Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert P Lamberton, M.D.

Endocrinology, Diabetes & Metabolism Physician in New London, CT · enumerated 2006.

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

National Provider Identifier

1205949658

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Registry record

Entity type Individual (Type 1)

Name Robert P Lamberton

Credential M.D.

Sex Male

Practice address 365 Montauk Ave, New London, CT, 06320

Phone (860) 444-4737

Fax (860) 444-4775

Enumeration date Aug 17, 2006

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 039386 (CT) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
39386CT01	Other	-	ANTHEM BLUE CROSS
4024972	Medicaid	CT	-
754841	Other	-	CONNECTICARE
OV9850	Other	-	HEALTHNET
3329010	Other	-	AETNA HMO
4443888003	Other	-	CIGNA
P2540302	Other	-	OXFORD
4014679	Medicaid	CT	-
06-0646704	Other	-	TRICARE
5898719	Other	-	AETNA

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 do I verify Robert Lamberton's NPI record?

Cross-check NPI 1205949658 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1205949658 active?

Yes, as of the latest NPPES snapshot, NPI 1205949658 is active (record last updated 2007-07-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.