Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Briana Martell, NP

Family Nurse Practitioner in Guilford, ME · enumerated 2018.

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

National Provider Identifier

1356836571

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Registry record

Entity type Individual (Type 1)

Name Briana Martell

Credential NP

Sex Female

Practice address 3 Park St, Guilford, ME, 04443

Phone (207) 876-3547

Enumeration date Jun 29, 2018

Last updated in NPPES Jun 29, 2018

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN59274 (ME) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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

Is NPI 1356836571 active?

Yes, as of the latest NPPES snapshot, NPI 1356836571 is active (record last updated 2018-06-29).

How do I verify Briana Martell's NPI record?

Cross-check NPI 1356836571 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Susan Chessa Family Nurse Practitioner · Guilford, ME NPI 1457541773

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-29.