Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Ann M Derrick, APRN

Psychiatric/Mental Health Nurse Practitioner in Louisville, KY · enumerated 2007.

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

National Provider Identifier

1831237668

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Registry record

Entity type Individual (Type 1)

Name Mrs. Ann M Derrick

Credential APRN

Sex Female

Practice address 200 E Chestnut St, Louisville, KY, 40202

Phone (502) 588-0800

Fax (502) 588-0801

Enumeration date Feb 2, 2007

Last updated in NPPES Jan 14, 2016

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 3000559 (KY) Secondary

364SP0807X Child & Adolescent Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 3000559 (KY) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 3000559 (KY) Primary

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

Other identifiers

Identifier	Type	State	Issuer
7100296540	Medicaid	KY	-
201180190	Medicaid	IN	-

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 Ann Derrick?

Ann Derrick is registered in NPPES with the primary taxonomy of Psychiatric/Mental Health Nurse Practitioner. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-01-14.