Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Christina Marie Ivy, FNP-C

Family Nurse Practitioner in O Fallon, MO · enumerated 2018.

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

National Provider Identifier

1104394899

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Registry record

Entity type Individual (Type 1)

Name Mrs. Christina Marie Ivy

Credential FNP-C

Sex Female

Practice address 2765 Red Cedar Parc Dr S, O Fallon, MO, 63368

Phone (636) 248-8072

Enumeration date Nov 12, 2018

Last updated in NPPES Nov 12, 2018

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 2018040232 (MO) 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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Christina Ivy?

Christina Ivy is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-11-12.