Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Peter Joseph Mazzaglia, MD

Surgery Physician in Providence, RI · enumerated 2006.

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

National Provider Identifier

1639103617

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Registry record

Entity type Individual (Type 1)

Name Peter Joseph Mazzaglia

Credential MD

Sex Male

Practice address 2 Dudley St, Suite 470, Providence, RI, 02905

Phone (401) 223-0962

Fax (401) 861-1272

Enumeration date Jul 10, 2006

Last updated in NPPES Jan 29, 2020

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD12186 (RI) 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
31703-4	Other	RI	RHODE ISLAND BCBS
7058687	Medicaid	RI	-

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 Peter Mazzaglia?

Peter Mazzaglia is registered in NPPES with the primary taxonomy of Surgery 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 2020-01-29.