Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nicolle Marcek

Lactation Consultant (Registered Nurse) in Mount Airy, MD · enumerated 2024.

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

National Provider Identifier

1154139574

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Registry record

Entity type Individual (Type 1)

Name Nicolle Marcek

Sex Female

Practice address 4389 Moleton Dr, Mount Airy, MD, 21771

Phone (860) 280-4241

Enumeration date Dec 19, 2024

Last updated in NPPES Dec 19, 2024

Taxonomy & licenses

163WL0100X Lactation Consultant (Registered Nurse) Nursing Service Providers · License R259199 (MD) 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 Nicolle Marcek's NPI record?

Cross-check NPI 1154139574 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1154139574 active?

Yes, as of the latest NPPES snapshot, NPI 1154139574 is active (record last updated 2024-12-19).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-19.