Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Thaddeus Benson, DMD

Dentist in Portland, ME · enumerated 2005.

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

National Provider Identifier

1184614778

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. William Thaddeus Benson

Credential DMD

Sex Male

Practice address 716 Stevens Ave, Portland, ME, 04103

Phone (978) 372-9122

Fax (978) 372-6131

Enumeration date Oct 25, 2005

Last updated in NPPES Sep 4, 2018

Taxonomy & licenses

122300000X Dentist Dental Providers · License 15695 (MA) Secondary

122300000X Dentist Dental Providers · License DEN4602 (ME) Primary

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

Other identifiers

Identifier	Type	State	Issuer
X05793	Other	-	BLUE CROSS BLUE SHIELD OF

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

How do I verify William Benson's NPI record?

Cross-check NPI 1184614778 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1184614778 active?

Yes, as of the latest NPPES snapshot, NPI 1184614778 is active (record last updated 2018-09-04).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-04.