Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

George P Meltsakos PC

Q: What is the NPI number for George P Meltsakos PC?

The NPI for George P Meltsakos PC is 1821075789, a Type 2 (organization) record in the CMS NPPES registry.

Internal Medicine Physician in Lowell, MA · enumerated 2005 · authorized official George Meltsakos, Owner.

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

National Provider Identifier

1821075789

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Registry record

Entity type Organization (Type 2)

Legal business name George P Meltsakos PC

Practice address 33 Bartlett St, Suite 504, Lowell, MA, 01852

Phone (978) 458-9651

Fax (978) 970-0378

Enumeration date Dec 30, 2005

Last updated in NPPES Apr 8, 2016

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 72329 (MA) Primary

Authorized official

Name George Meltsakos

Title Owner

Phone (978) 458-9651

Other identifiers

Identifier	Type	State	Issuer
9785639	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for George P Meltsakos PC?

NPPES lists George Meltsakos (Owner) as the authorized official for this organization.

What is the NPI number for George P Meltsakos PC?

The NPI for George P Meltsakos PC is 1821075789, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-04-08.