Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Benjamin Adam Nielsen, DMD

Endodontics in Portland, OR · enumerated 2006.

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

National Provider Identifier

1538183348

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Registry record

Entity type Individual (Type 1)

Name Dr. Benjamin Adam Nielsen

Credential DMD

Sex Male

Practice address 700 Ne Multnomah St, Suite 880, Portland, OR, 97232

Phone (503) 230-1234

Fax (503) 239-7741

Enumeration date Jul 26, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223E0200X Endodontics Dental Providers · License D8379 (OR) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

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 is the NPI number for Benjamin Nielsen?

The National Provider Identifier (NPI) for Benjamin Nielsen is 1538183348, a Type 1 (individual) record in the CMS NPPES registry.

Where does Benjamin Nielsen practice?

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

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