Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Hinrichsen

General Practice Dentistry in Darby, PA · enumerated 2007.

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

National Provider Identifier

1285786939

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Registry record

Entity type Individual (Type 1)

Name William Hinrichsen

Sex Male

Practice address 875 Main St, Darby, PA, 19023

Phone (610) 534-0300

Enumeration date Jan 16, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 023054 (PA) 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.

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Frequently asked questions

Where does William Hinrichsen practice?

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

What is the NPI number for William Hinrichsen?

The National Provider Identifier (NPI) for William Hinrichsen is 1285786939, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Susmita Parab General Practice Dentistry · Darby, PA NPI 1467506295 Alejandro Montalvo General Practice Dentistry · Darby, PA NPI 1376708255 American Dental Care,LLC Dentist · Darby, PA NPI 1164665030 Ameri Dental Group P.C. Dentist · Darby, PA NPI 1538410204 American Dental Health P.C. Dentist · Darby, PA NPI 1740636174 African Family Health Organization Family Medicine Physician · Darby, PA NPI 1174384168

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.