Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Susan Elaine Mcwilliams, RN, IBCLC

Lactation Consultant (Registered Nurse) in Siloam Springs, AR · enumerated 2011.

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

National Provider Identifier

1245521095

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Registry record

Entity type Individual (Type 1)

Name Susan Elaine Mcwilliams

Credential RN, IBCLC

Sex Female

Practice address Siloam Springs, AR, 72761

Phone (479) 524-4172

Enumeration date Apr 27, 2011

Last updated in NPPES Apr 27, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163WL0100X Lactation Consultant (Registered Nurse) Nursing Service Providers · License R41814 (AR) 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.

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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 Susan Mcwilliams?

Susan Mcwilliams is registered in NPPES with the primary taxonomy of Lactation Consultant (Registered Nurse). The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-27.