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

Ms. Diana Ellen Johnson, APRN

Child & Adolescent Psychiatric/Mental Health Clinical Nurse Specialist in Ivoryton, CT · enumerated 2009.

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

National Provider Identifier

1336388032

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Registry record

Entity type Individual (Type 1)

Name Ms. Diana Ellen Johnson

Credential APRN

Sex Female

Practice address Ivoryton, CT, 06442

Phone (860) 304-0469

Enumeration date Feb 19, 2009

Last updated in NPPES Feb 19, 2009

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

Taxonomy & licenses

364SP0807X Child & Adolescent Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 002865 (CT) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN 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

What specialty is Diana Johnson?

Diana Johnson is registered in NPPES with the primary taxonomy of Child & Adolescent Psychiatric/Mental Health Clinical Nurse Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-19.