Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Cynthia J Mcnaughton, RN-C, OHNP

Occupational Health Nurse Practitioner in Mountain View, CA · enumerated 2013.

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

National Provider Identifier

1457693582

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Registry record

Entity type Individual (Type 1)

Name Ms. Cynthia J Mcnaughton

Credential RN-C, OHNP

Sex Female

Practice address 2500 Grant Rd, Mountain View, CA, 94040

Phone (650) 940-7021

Fax (650) 988-7819

Enumeration date Mar 27, 2013

Last updated in NPPES Mar 27, 2013

Taxonomy & licenses

363LX0106X Occupational Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 336081 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
5840	Other	CA	NURSE PRACTITIONER CERTIFICATE AND FURNISHING

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 Mcnaughton?

The National Provider Identifier (NPI) for Cynthia Mcnaughton is 1457693582, a Type 1 (individual) record in the CMS NPPES registry.

Where does Cynthia Mcnaughton practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-27.