NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. John Joesph Dunn Jr., R.D.O.

Optician in Arlington, MA · enumerated 2006.

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

National Provider Identifier

1972686525

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mr. John Joesph Dunn Jr.
Credential R.D.O.
Sex Male
Practice address Arlington, MA, 02474
Phone (781) 646-7776
Fax (781) 646-7784
Enumeration date Oct 24, 2006
Last updated in NPPES Oct 17, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

156FX1800X Optician Eye and Vision Services Providers · License 4134 (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

Where does John Dunn practice?
The practice location on file with NPPES is in Arlington, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Dunn?
The National Provider Identifier (NPI) for John Dunn is 1972686525, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-17.