Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karen Marie Lydon Sr., LCSW

Q: What is the NPI number for Karen Lydon?

The National Provider Identifier (NPI) for Karen Lydon is 1174563159, a Type 1 (individual) record in the CMS NPPES registry.

Clinical Social Worker in Hellam, PA · enumerated 2006.

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

National Provider Identifier

1174563159

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Registry record

Entity type Individual (Type 1)

Name Karen Marie Lydon Sr.

Credential LCSW

Sex Female

Practice address 214 W Market St, Hellam, PA, 17406

Phone (717) 755-7431

Enumeration date Jun 7, 2006

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License CW023300 (PA) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
101085730	Medicaid	PA	-

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 Karen Lydon practice?

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

What is the NPI number for Karen Lydon?

The National Provider Identifier (NPI) for Karen Lydon is 1174563159, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.