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

Kristina Robinson Hammer, DNP, FNP-C

Family Nurse Practitioner in Louisville, KY · enumerated 2019.

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

National Provider Identifier

1639634199

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Registry record

Entity type Individual (Type 1)

Name Kristina Robinson Hammer

Credential DNP, FNP-C

Sex Female

Practice address Louisville, KY, 40222

Phone (502) 425-4404

Enumeration date Feb 8, 2019

Last updated in NPPES Dec 30, 2020

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

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71010695A (IN) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 3012962 (KY) Primary

DNP · Doctor of Nursing Practice: A clinical doctorate for advanced practice nurses. About the DNP credential

Other identifiers

Identifier	Type	State	Issuer
F07182322	Other	-	AANP

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 1639634199 active?

Yes, as of the latest NPPES snapshot, NPI 1639634199 is active (record last updated 2020-12-30).

How do I verify Kristina Hammer's NPI record?

Cross-check NPI 1639634199 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 2020-12-30.