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

Ann O'Brien Nelson, APRN-FNP

Q: What is the NPI number for Ann Nelson?

The National Provider Identifier (NPI) for Ann Nelson is 1376637009, a Type 1 (individual) record in the CMS NPPES registry.

Family Nurse Practitioner in Hartford, CT · enumerated 2006.

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

National Provider Identifier

1376637009

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Registry record

Entity type Individual (Type 1)

Name Ann O'Brien Nelson

Credential APRN-FNP

Sex Female

Practice address Hartford, CT, 06105

Phone (860) 714-4801

Fax (860) 714-8073

Enumeration date Oct 3, 2006

Last updated in NPPES Jul 8, 2007

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 001956 (CT) Primary

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

Where does Ann Nelson practice?

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

What is the NPI number for Ann Nelson?

The National Provider Identifier (NPI) for Ann Nelson is 1376637009, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.