Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Heather Merkert, LCSW
Clinical Social Worker in York, PA · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1447682059
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Registry record
Entity type Individual (Type 1)
Name Heather Merkert
Credential LCSW
Sex Female
Practice address 4150 W Market St, York, PA, 17408
Phone (717) 650-6583
Fax (717) 793-2165
Enumeration date Aug 6, 2013
Last updated in NPPES Dec 11, 2023
Taxonomy & licenses
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License CW019164 (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 |
|---|---|---|---|
| 1447682059 | Other | PA | HEATHER EISENHART |
| 842465701 | 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.
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 Heather Merkert?
Heather Merkert is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-11.