Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Cynthia Sue Derifield, IBCLC

Lactation Consultant (Registered Nurse) in Ironton, OH · enumerated 2015.

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

National Provider Identifier

1952798738

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Registry record

Entity type Individual (Type 1)

Name Mrs. Cynthia Sue Derifield

Credential IBCLC

Sex Female

Practice address Ironton, OH, 45638

Phone (740) 533-0662

Fax (740) 532-0450

Enumeration date Apr 20, 2015

Last updated in NPPES Apr 20, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163WL0100X Lactation Consultant (Registered Nurse) Nursing Service Providers · License 10218035 (OH) 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 Cynthia Derifield?

The National Provider Identifier (NPI) for Cynthia Derifield is 1952798738, a Type 1 (individual) record in the CMS NPPES registry.

Where does Cynthia Derifield practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-20.