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

Ms. Debbie Kay Karstu, NP

Nurse Practitioner in Springfield, OH · enumerated 2007.

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

National Provider Identifier

1629277421

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Registry record

Entity type Individual (Type 1)

Name Ms. Debbie Kay Karstu

Credential NP

Sex Female

Practice address Springfield, OH, 45503

Phone (866) 534-2639

Fax (800) 480-7578

Enumeration date Jul 12, 2007

Last updated in NPPES Sep 17, 2025

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 56990 (ID) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 5194 (MN) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 201390633NP-PP (OR) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704161795 (MI) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 0133152 (OH) Primary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APRN9413906 (FL) Secondary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
0133152	Medicaid	OH	-

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 1629277421 active?

Yes, as of the latest NPPES snapshot, NPI 1629277421 is active (record last updated 2025-09-17).

How do I verify Debbie Karstu's NPI record?

Cross-check NPI 1629277421 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 2025-09-17.