Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gregory Gerard Decandia, MD

Family Medicine Physician in Southbury, CT · enumerated 2005.

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

National Provider Identifier

1003890641

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory Gerard Decandia

Credential MD

Sex Male

Practice address 1461 South Britain Road, Southbury, CT, 06488

Phone (203) 586-2000

Enumeration date Dec 6, 2005

Last updated in NPPES Mar 27, 2014

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 76773 (MA) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 029717 (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
3128075	Medicaid	MA	-

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

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.

What specialty is Gregory Decandia?

Gregory Decandia is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-03-27.