Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gwyneth M Alexander, FNP

Family Nurse Practitioner in Hauppauge, NY · enumerated 2009 · practices at Amb Medical Services, P.C..

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

National Provider Identifier

1346577939

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Registry record

Entity type Individual (Type 1)

Name Gwyneth M Alexander

Credential FNP

Sex Female

Practice address 1 Kings Hwy, Hauppauge, NY, 11788

Phone (631) 348-4900

Fax (631) 348-0273

Enumeration date Nov 3, 2009

Last updated in NPPES Nov 3, 2009

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F336046-1 (NY) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Gwyneth Alexander practice?

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

What is the NPI number for Gwyneth Alexander?

The National Provider Identifier (NPI) for Gwyneth Alexander is 1346577939, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-11-03.