Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jennifer Kristine Day, CNS

Psychiatric/Mental Health Nurse Practitioner in Indianapolis, IN · enumerated 2006.

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

National Provider Identifier

1639142649

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Registry record

Entity type Individual (Type 1)

Name Jennifer Kristine Day

Credential CNS

Sex Female

Practice address 2040 North Shadeland Avenue, Suite 200, Indianapolis, IN, 46219

Phone (317) 355-1800

Fax (317) 355-1803

Enumeration date Feb 9, 2006

Last updated in NPPES Nov 27, 2023

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 70000179A (IN) Primary

364SP0807X Child & Adolescent Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 70000179A (IN) Secondary

364SP0808X Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 70000179B (IN) Secondary

Other identifiers

Identifier	Type	State	Issuer
100270530	Medicaid	IN	-
000000724769	Other	IN	ANTHEM

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 1639142649 active?

Yes, as of the latest NPPES snapshot, NPI 1639142649 is active (record last updated 2023-11-27).

How do I verify Jennifer Day's NPI record?

Cross-check NPI 1639142649 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 2023-11-27.