Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Peter Giacomazzi, MD,LLC

Q: What is the NPI number for Peter Giacomazzi, MD,LLC?

The NPI for Peter Giacomazzi, MD,LLC is 1861834210, a Type 2 (organization) record in the CMS NPPES registry.

Internal Medicine Physician in Wolcott, CT · enumerated 2013 · authorized official Peter Giacomazzi, MD/Owner.

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

National Provider Identifier

1861834210

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Registry record

Entity type Organization (Type 2)

Legal business name Peter Giacomazzi, MD,LLC

Practice address 503 Wolcott Rd, Wolcott, CT, 06716

Phone (203) 879-8003

Fax (203) 879-8010

Enumeration date Jul 26, 2013

Last updated in NPPES Jul 26, 2013

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 419853 (CT) Primary

Authorized official

Name Peter Giacomazzi

Title MD/Owner

Phone (203) 879-8003

Other identifiers

Identifier	Type	State	Issuer
001419531	Medicaid	CT	-

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

What is the NPI number for Peter Giacomazzi, MD,LLC?

The NPI for Peter Giacomazzi, MD,LLC is 1861834210, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Peter Giacomazzi, MD,LLC?

NPPES lists Peter Giacomazzi (MD/Owner) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-07-26.