Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cari Marx, RN

Q: What is the NPI number for Cari Marx?

The National Provider Identifier (NPI) for Cari Marx is 1255638516, a Type 1 (individual) record in the CMS NPPES registry.

Registered Nurse in Williamsville, NY · enumerated 2011 · practices at Pediatric Home Nursing Services, Inc..

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

National Provider Identifier

1255638516

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Registry record

Entity type Individual (Type 1)

Name Cari Marx

Credential RN

Sex Female

Practice address 2250 Wehrle Dr, Suite 1, Williamsville, NY, 14221

Phone (716) 276-2123

Fax (716) 276-2129

Enumeration date Feb 23, 2011

Last updated in NPPES Feb 23, 2011

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 559362 (NY) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

What is the NPI number for Cari Marx?

The National Provider Identifier (NPI) for Cari Marx is 1255638516, a Type 1 (individual) record in the CMS NPPES registry.

Where does Cari Marx practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-02-23.