Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Harley Elizabeth Williams
Physician Assistant in Dover, DE · enumerated 2018.
Data current as of Jul 11, 2026 · sourced from CMS NPPES
National Provider Identifier
1811477300
See something wrong? Report a correction
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 2026-07-11. Provider record last updated 2026-02-10.