Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cassandra Markham

Family Nurse Practitioner in East Meadow, NY · enumerated 2023.

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

National Provider Identifier

1417659228

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Registry record

Entity type Individual (Type 1)

Name Cassandra Markham

Sex Female

Practice address 50 Dorothy Dr, East Meadow, NY, 11554

Phone (516) 870-2065

Enumeration date Mar 17, 2023

Last updated in NPPES Mar 17, 2023

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F350899-01 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Cassandra Markham?

The National Provider Identifier (NPI) for Cassandra Markham is 1417659228, a Type 1 (individual) record in the CMS NPPES registry.

Where does Cassandra Markham practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-17.