Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David Ross Tenhulzen, MD DMD

Oral and Maxillofacial Surgery (Dentist) in Tualatin, OR · enumerated 2006.

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

National Provider Identifier

1194896548

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Registry record

Entity type Individual (Type 1)

Name Dr. David Ross Tenhulzen

Credential MD DMD

Sex Male

Practice address 6464 Sw Borland Rd, Ste D3, Tualatin, OR, 97062

Phone (503) 692-5654

Fax (503) 692-9220

Enumeration date Nov 9, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

1223S0112X Oral and Maxillofacial Surgery (Dentist) Dental Providers · License D6314 (OR) Primary

204E00000X Oral & Maxillofacial Surgery (D.M.D.) Allopathic & Osteopathic Physicians · License MD13968 (OR) Secondary

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 specialty is David Tenhulzen?

David Tenhulzen is registered in NPPES with the primary taxonomy of Oral and Maxillofacial Surgery (Dentist). 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.