Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Seymour Weissman, PHD

Clinical Psychologist in Plainview, NY · enumerated 2006 · practices at Ozone Acquisition,LLC.

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

National Provider Identifier

1417908963

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Registry record

Entity type Individual (Type 1)

Name Seymour Weissman

Credential PHD

Sex Male

Practice address 825 Old Country Rd, Plainview, NY, 11803

Phone (516) 433-0600

Enumeration date May 12, 2006

Last updated in NPPES Oct 11, 2011

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 005496 (NY) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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

Where does Seymour Weissman practice?

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

What is the NPI number for Seymour Weissman?

The National Provider Identifier (NPI) for Seymour Weissman is 1417908963, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Ozone Acquisition,LLC Skilled Nursing Facility · Plainview, NY NPI 1164419883

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-11.