Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William M Trachtenberg, M.D.

Specialist in Allentown, PA · enumerated 2005 · practices at Lehigh Valley Center for Sight PC.

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

National Provider Identifier

1992705396

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Registry record

Entity type Individual (Type 1)

Name William M Trachtenberg

Credential M.D.

Sex Male

Practice address 1739 W Fairmont St, Allentown, PA, 18104

Phone (610) 437-4988

Fax (610) 437-4176

Enumeration date Jul 28, 2005

Last updated in NPPES Feb 4, 2008

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MD013493E (PA) 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
0006264490001	Medicaid	PA	-

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

What is the NPI number for William Trachtenberg?

The National Provider Identifier (NPI) for William Trachtenberg is 1992705396, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Trachtenberg practice?

The practice location on file with NPPES is in Allentown, PA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-04.