Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David Allan Williams, D.D.S.

General Practice Dentistry in Northbrook, IL · enumerated 2006.

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

National Provider Identifier

1336178052

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Registry record

Entity type Individual (Type 1)

Name Dr. David Allan Williams

Credential D.D.S.

Sex Male

Practice address 666 Dundee Rd, Suite 801, Northbrook, IL, 60062

Phone (847) 291-0555

Fax (847) 291-6933

Enumeration date Jul 3, 2006

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers 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

How do I verify David Williams's NPI record?

Cross-check NPI 1336178052 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1336178052 active?

Yes, as of the latest NPPES snapshot, NPI 1336178052 is active (record last updated 2022-07-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.