NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Julianne O'Brien Larsen

Family Nurse Practitioner in Rockland, MA · enumerated 2013 · practices at Cvs Pharmacy Inc.

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

National Provider Identifier

1215363460

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Julianne O'Brien Larsen
Sex Female
Practice address 80 Market St, Rockland, MA, 02370
Phone (781) 878-4225
Enumeration date Sep 19, 2013
Last updated in NPPES Mar 17, 2018

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2276832 (MA) 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

How do I verify Julianne O'Brien Larsen's NPI record?
Cross-check NPI 1215363460 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1215363460 active?
Yes, as of the latest NPPES snapshot, NPI 1215363460 is active (record last updated 2018-03-17).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-17.