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

John M Waterman, CASAC

Addiction (Substance Use Disorder) Counselor in Patchogue, NY · enumerated 2015.

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

National Provider Identifier

1891183216

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Registry record

Entity type Individual (Type 1)

Name John M Waterman

Credential CASAC

Sex Male

Practice address Patchogue, NY, 11772

Phone (631) 363-2001

Fax (631) 702-8050

Enumeration date Jan 7, 2015

Last updated in NPPES Jan 7, 2015

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 25901 (NY) 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.

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Frequently asked questions

What is the NPI number for John Waterman?

The National Provider Identifier (NPI) for John Waterman is 1891183216, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Waterman practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-01-07.