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

Matthew Edward Williams, M.A., LPC, LCADC

Professional Counselor in Boonton, NJ · enumerated 2006.

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

National Provider Identifier

1699837955

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Registry record

Entity type Individual (Type 1)

Name Matthew Edward Williams

Credential M.A., LPC, LCADC

Sex Male

Practice address Boonton, NJ, 07005

Phone (973) 557-7500

Fax (973) 794-6404

Enumeration date Dec 14, 2006

Last updated in NPPES Jul 6, 2012

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

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 37LC00172900 (NJ) Secondary

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 37PC00419400 (NJ) Primary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC credential

Other identifiers

Identifier	Type	State	Issuer
12216605	Other	NJ	CAQH

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

Is NPI 1699837955 active?

Yes, as of the latest NPPES snapshot, NPI 1699837955 is active (record last updated 2012-07-06).

How do I verify Matthew Williams's NPI record?

Cross-check NPI 1699837955 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-06.