Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jennifer Martell Collar, CNP

Neonatal Nurse Practitioner in Melrose, MA · enumerated 2023.

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

National Provider Identifier

1881390029

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Registry record

Entity type Individual (Type 1)

Name Jennifer Martell Collar

Credential CNP

Sex Female

Practice address 585 Lebanon St, Melrose, MA, 02176

Phone (781) 979-3000

Enumeration date Jan 31, 2023

Last updated in NPPES Mar 11, 2026

Taxonomy & licenses

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN284243 (MA) Secondary

363LN0000X Neonatal Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN284243 (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.

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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 Jennifer Collar?

Jennifer Collar is registered in NPPES with the primary taxonomy of Neonatal Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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