Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Donald James Greeley, DMD

General Practice Dentistry in Weymouth, MA · enumerated 2006.

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

National Provider Identifier

1679677785

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Donald James Greeley

Credential DMD

Sex Male

Practice address 4 Richmond St, Weymouth, MA, 02188

Phone (781) 337-0406

Fax (781) 335-3566

Enumeration date Sep 11, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 9155 (MA) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Other identifiers

Identifier	Type	State	Issuer
08419390	Other	MA	EMPLOYER ID
40107	Other	MA	HARVARD PILGRIM
0215856	Medicaid	MA	-
X04077	Other	MA	BLUE CROSS BLUE SHIELD

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

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 Donald Greeley?

Donald Greeley is registered in NPPES with the primary taxonomy of General Practice Dentistry. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.