NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Carolyn Louise Langdon, N.N.P.

Critical Care Neonatal Nurse Practitioner in Phoenix, AZ · enumerated 2006.

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

National Provider Identifier

1740245810

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Ms. Carolyn Louise Langdon
Credential N.N.P.
Sex Female
Practice address 901 E Willetta St, Rm. 3503, Phoenix, AZ, 85006
Fax (602) 239-2307
Enumeration date Apr 19, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363LN0005X Critical Care Neonatal Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 17 (AZ) 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 Carolyn Langdon?
The National Provider Identifier (NPI) for Carolyn Langdon is 1740245810, a Type 1 (individual) record in the CMS NPPES registry.
Where does Carolyn Langdon practice?
The practice location on file with NPPES is in Phoenix, AZ. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.