Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Hayley Ahlefeld, LSW
Social Worker in Exton, PA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1588139315
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Registry record
Entity type Individual (Type 1)
Name Hayley Ahlefeld
Credential LSW
Sex Female
Practice address 390 Waterloo Blvd Ste 120, Exton, PA, 19341
Phone (610) 363-5500
Enumeration date Oct 8, 2018
Last updated in NPPES Oct 8, 2018
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License SW135566 (PA) 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.
Frequently asked questions
Where does Hayley Ahlefeld practice?
The practice location on file with NPPES is in Exton, PA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Hayley Ahlefeld?
The National Provider Identifier (NPI) for Hayley Ahlefeld is 1588139315, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Laurie Mawhinney Social Worker · Exton, PA NPI 1003227497 Kristeana Dawson Mental Health Counselor · Exton, PA NPI 1538692009 Martha Napolitana Professional Counselor · Exton, PA NPI 1619519675 Katrina Simpkins Professional Counselor · Exton, PA NPI 1821632704 Emma Ross School Social Worker · Exton, PA NPI 1003455890 Lauren Smith Behavior Analyst · Exton, PA NPI 1508430497 Kristin Davis Behavior Analyst · Exton, PA NPI 1003553736 Tiah Hodges Behavior Analyst · Exton, PA NPI 1518657121
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-08.