Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

William H Langfield Jr.

Optometrist in Somerset, MA · enumerated 2009 · authorized official William Langfield, Owner/Doctor.

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

National Provider Identifier

1922248608

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Registry record

Entity type Organization (Type 2)

Legal business name William H Langfield Jr.

Practice address 598 County St, Somerset, MA, 02726

Phone (508) 676-8167

Fax (508) 676-1434

Enumeration date Feb 20, 2009

Last updated in NPPES Feb 20, 2009

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 2876 (MA) Primary

Authorized official

Name William Langfield

Title Owner/Doctor

Phone (508) 676-8167

Other identifiers

Identifier	Type	State	Issuer
79024	Other	-	BLUE CROSS RI
15227	Other	MA	HARVARD PILGRIM
0344214	Medicaid	MA	-
2201002	Other	MA	UNITED HEALTH
W15566	Other	MA	BLUE CROSS MA
400875	Other	-	BLUE CHIP

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

Where is William H Langfield Jr. located?

The practice location on file with NPPES is in Somerset, MA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2009-02-20. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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William Langfield Optometrist · Somerset, MA NPI 1477645521 William H. Langfield Jr Od PC Optometrist · Somerset, MA NPI 1588024525

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-20.