Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Harley Elizabeth Williams
Physician Assistant in Dover, DE · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811477300
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Registry record
Entity type Individual (Type 1)
Name Harley Elizabeth Williams
Sex Female
Practice address 200 Banning St Ste 250, Dover, DE, 19904
Phone (302) 736-1320
Fax (302) 346-4532
Enumeration date Aug 15, 2018
Last updated in NPPES Feb 10, 2026
Taxonomy & licenses
363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License MA060015 (PA) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License MA060015 (PA) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License C5-0011766 (DE) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 250694487 | Medicaid | DE | - |
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
What is the NPI number for Harley Williams?
The National Provider Identifier (NPI) for Harley Williams is 1811477300, a Type 1 (individual) record in the CMS NPPES registry.
Where does Harley Williams practice?
The practice location on file with NPPES is in Dover, DE. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-10.