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

Katie Anne Van Leeuwen, MSW, LICSW

Clinical Social Worker in Barnstable, MA · enumerated 2007.

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

National Provider Identifier

1700932183

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Registry record

Entity type Individual (Type 1)

Name Katie Anne Van Leeuwen

Credential MSW, LICSW

Sex Female

Practice address Barnstable, MA, 02630

Phone (508) 362-8606

Fax (508) 362-0046

Enumeration date Jan 26, 2007

Last updated in NPPES Feb 26, 2016

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 992321 (CO) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 116412 (MA) Primary

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

Where does Katie Van Leeuwen practice?

The practice location on file with NPPES is in Barnstable, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Katie Van Leeuwen?

The National Provider Identifier (NPI) for Katie Van Leeuwen is 1700932183, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-02-26.