Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ellen Lyons-Connors

Psychiatric/Mental Health Clinical Nurse Specialist in Cambridge, MA · enumerated 2009.

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

National Provider Identifier

1558698803

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Registry record

Entity type Individual (Type 1)

Name Ellen Lyons-Connors

Sex Female

Practice address 1493 Cambridge St, Cambridge, MA, 02139

Phone (617) 665-1560

Enumeration date Nov 6, 2009

Last updated in NPPES Feb 8, 2012

Taxonomy & licenses

364SP0808X Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License RN148037 (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 Ellen Lyons-Connors?

Ellen Lyons-Connors is registered in NPPES with the primary taxonomy of Psychiatric/Mental Health Clinical Nurse Specialist. 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 2012-02-08.