Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Courtney Cathleen Steer-Massaro, C.N.M., F.N.P.-C.

Advanced Practice Midwife in Fort Defiance, AZ · enumerated 2012 · practices at Fort Defiance Indian Hospital Board, Inc.

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

National Provider Identifier

1235482043

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Registry record

Entity type Individual (Type 1)

Name Ms. Courtney Cathleen Steer-Massaro

Credential C.N.M., F.N.P.-C.

Sex Female

Practice address Corner of Route N12 and N7, Fort Defiance, AZ, 86504

Phone (928) 729-8000

Enumeration date Oct 17, 2012

Last updated in NPPES Jul 7, 2021

Taxonomy & licenses

367A00000X Advanced Practice Midwife Physician Assistants & Advanced Practice Nursing Providers · License RN2282025 (MA) Primary

CNM · Certified Nurse Midwife: An advanced practice nurse specializing in pregnancy, childbirth, and reproductive care. About the CNM 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

Is NPI 1235482043 active?

Yes, as of the latest NPPES snapshot, NPI 1235482043 is active (record last updated 2021-07-07).

How do I verify Courtney Steer-Massaro's NPI record?

Cross-check NPI 1235482043 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-07.