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

William F Carleton, RDO

Optician in Boston, MA · enumerated 2007 · practices at William F Carleton Dba Commonwealth Opticians.

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

National Provider Identifier

1508909284

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Registry record

Entity type Individual (Type 1)

Name William F Carleton

Credential RDO

Sex Male

Practice address Boston, MA, 02118

Phone (617) 638-8340

Enumeration date Feb 14, 2007

Last updated in NPPES Jul 9, 2007

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 1975 (MA) Primary

Other identifiers

Identifier	Type	State	Issuer
755437	Other	-	TUFTS
1534858	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.

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Frequently asked questions

What specialty is William Carleton?

William Carleton is registered in NPPES with the primary taxonomy of Optician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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William F Carleton Dba Commonwealth Opticians Optician · Boston, MA NPI 1952444630

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.