Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Carlos O'Farrill, APRN

Family Nurse Practitioner in Marathon, FL · enumerated 2021 · practices at Guidance Clinic of the Middle Keys.

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

National Provider Identifier

1043895444

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Registry record

Entity type Individual (Type 1)

Name Carlos O'Farrill

Credential APRN

Sex Male

Practice address 3000 41st Ocean, Marathon, FL, 33050

Phone (305) 434-7660

Enumeration date Mar 17, 2021

Last updated in NPPES Jan 15, 2026

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APRN11043906 (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

What is the NPI number for Carlos O'Farrill?

The National Provider Identifier (NPI) for Carlos O'Farrill is 1043895444, a Type 1 (individual) record in the CMS NPPES registry.

Where does Carlos O'Farrill practice?

The practice location on file with NPPES is in Marathon, FL. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-15.