Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Rosemary Hartnett, LCSW

Counselor in Exton, PA · enumerated 2006.

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

National Provider Identifier

1144318205

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Registry record

Entity type Individual (Type 1)

Name Ms. Rosemary Hartnett

Credential LCSW

Sex Female

Practice address 47 Marchwood Rd, Suite 1-C, Exton, PA, 19341

Phone (610) 280-3959

Fax (610) 280-9776

Enumeration date Oct 11, 2006

Last updated in NPPES Aug 31, 2009

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License CW015116 (PA) Primary

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

Is NPI 1144318205 active?

Yes, as of the latest NPPES snapshot, NPI 1144318205 is active (record last updated 2009-08-31).

How do I verify Rosemary Hartnett's NPI record?

Cross-check NPI 1144318205 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Sarah Canfield Counselor · Exton, PA NPI 1073591129 Steven Sitkoff Optometrist · Exton, PA NPI 1720024771 Carol Pusey Professional Counselor · Exton, PA NPI 1568570968 Brigette Erwin Psychologist · Exton, PA NPI 1487766044 Karen Fraley Clinical Social Worker · Exton, PA NPI 1912001496 Nancy Buckwalter Clinical Social Worker · Exton, PA NPI 1942367875 Mary Ann Koenig Clinical Psychologist · Exton, PA NPI 1598971525 Dianne Kuchlak Clinical Social Worker · Exton, PA NPI 1861746802

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-08-31.