NPI Portal NPI Lookup & Verification

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

Ms. Margaret Louise Witzleb, ARNP

Nurse Practitioner in Melbourne, FL · enumerated 2006.

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

National Provider Identifier

1114980364

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Registry record

Entity type Individual (Type 1)
Name Ms. Margaret Louise Witzleb
Credential ARNP
Sex Female
Practice address Melbourne, FL, 32935
Phone (321) 775-0477
Fax (321) 775-0476
Enumeration date Apr 10, 2006
Last updated in NPPES May 9, 2013

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

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License ARNP9164887 (FL) Primary

Other identifiers

Identifier Type State Issuer
3031560-00 Medicaid FL -

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.

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Frequently asked questions

How do I verify Margaret Witzleb's NPI record?
Cross-check NPI 1114980364 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1114980364 active?
Yes, as of the latest NPPES snapshot, NPI 1114980364 is active (record last updated 2013-05-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-09.