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

Marisa Siddell Fetherolf, APRN

Family Nurse Practitioner in Venice, FL · enumerated 2024 · practices at Millennium Cardiovascular Associates Inc.

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

National Provider Identifier

1376387514

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Registry record

Entity type Individual (Type 1)

Name Marisa Siddell Fetherolf

Credential APRN

Sex Female

Practice address Venice, FL, 34285

Phone (941) 837-2922

Enumeration date Jun 22, 2024

Last updated in NPPES Jul 16, 2024

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 11033549 (FL) Primary

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

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

How do I verify Marisa Fetherolf's NPI record?

Cross-check NPI 1376387514 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1376387514 active?

Yes, as of the latest NPPES snapshot, NPI 1376387514 is active (record last updated 2024-07-16).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-16.