Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Tanzi, OPTICIAN

Optician in Dedham, MA · enumerated 2015.

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

National Provider Identifier

1336521319

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Registry record

Entity type Individual (Type 1)

Name Michael Tanzi

Credential OPTICIAN

Sex Male

Practice address 1 Lyons St, Dedham, MA, 02026

Phone (781) 329-1400

Enumeration date Jun 25, 2015

Last updated in NPPES Jun 25, 2015

Taxonomy & licenses

156FX1800X Optician Eye and Vision Services Providers · License 4659 (MA) Primary

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 NPI 1336521319 active?

Yes, as of the latest NPPES snapshot, NPI 1336521319 is active (record last updated 2015-06-25).

How do I verify Michael Tanzi's NPI record?

Cross-check NPI 1336521319 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-25.