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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Harold A. Dehaven, D.D.S.

Periodontics in Wilmington, DE · enumerated 2007.

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

National Provider Identifier

1427266105

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Registry record

Entity type Individual (Type 1)
Name Dr. Harold A. Dehaven
Credential D.D.S.
Sex Male
Practice address Wilmington, DE, 19805
Phone (302) 652-3586
Fax (302) 652-1174
Enumeration date May 18, 2007
Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1223P0300X Periodontics Dental Providers · License G1-0000608 (DE) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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

Where does Harold Dehaven practice?
The practice location on file with NPPES is in Wilmington, DE. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Harold Dehaven?
The National Provider Identifier (NPI) for Harold Dehaven is 1427266105, a Type 1 (individual) record in the CMS NPPES registry.

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