NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Christine Marie Larsen, MSNRN, CPNP-PC

Nurse Practitioner in Bedford, MA · enumerated 2017 · practices at Patriot Pediatrics.

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

National Provider Identifier

1780121293

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Ms. Christine Marie Larsen
Credential MSNRN, CPNP-PC
Sex Female
Practice address 74 Loomis St, Bedford, MA, 01730
Phone (781) 674-2900
Enumeration date Jan 22, 2017
Last updated in NPPES Mar 11, 2026

Taxonomy & licenses

163WP0200X Pediatric Registered Nurse Nursing Service Providers · License 283535 (MA) Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 283535 (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

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Christine Larsen?
Christine Larsen is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-11.