Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alexandra Koerten, RN, IBCLC

Lactation Consultant (Registered Nurse) in Melrose, MA · enumerated 2018.

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

National Provider Identifier

1659841963

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Registry record

Entity type Individual (Type 1)

Name Alexandra Koerten

Credential RN, IBCLC

Sex Female

Practice address 5 S Mountain Ave, Melrose, MA, 02176

Phone (781) 281-9505

Enumeration date Nov 29, 2018

Last updated in NPPES May 7, 2025

Taxonomy & licenses

163WM0102X Maternal Newborn Registered Nurse Nursing Service Providers · License RN2320583 (MA) Secondary

163WL0100X Lactation Consultant (Registered Nurse) Nursing Service Providers · License CLC283630 (MA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

Where does Alexandra Koerten practice?

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

What is the NPI number for Alexandra Koerten?

The National Provider Identifier (NPI) for Alexandra Koerten is 1659841963, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-07.