Harley Williams
NPI 1811477300 · Physician Assistant · Dover, DE
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harley Williams is a Physician Assistant provider in Dover, DE (NPI 1811477300).
Provider details
- NPI number
- 1811477300
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- MA060015 (PA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
- Physician Assistant363A00000X
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
5,761 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Detection Test By Nucleic Acid for Organism, Amplified Probe Technique87798 | 1,742 | $34 |
| Chemical Analysis Using Spectrophotometry (light)84311 | 530 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 278 | $107 |
| Bilirubin Level, Total82247 | 265 | $5 |
| Creatinine Level to Test for Kidney Function Or Muscle Injury82570 | 265 | $5 |
| Glucose (sugar) Level on Body Fluid82945 | 265 | $4 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 571 | 150 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 488 | 133 |
| Gabapentin | 341 | 79 |
| Cyclobenzaprine Hcl | 206 | 63 |
| Pregabalin | 203 | 50 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 194 | 65 |
| Tramadol Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$366 across 18 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (4)
- 291 Carter Dr Ste aMiddletown, DE 19709-5845Phone: (844) 365-7246Fax: (844) 516-0080
- 1197 Airport Rd Fl 2Milford, DE 19963-6418Phone: (844) 365-7246Fax: (844) 516-0080
- 3105 Limestone Rd Ste 300Wilmington, DE 19808-2156Phone: (844) 365-7246Fax: (844) 516-0080
- 405 Silverside Rd Ste 104Wilmington, DE 19809-1768Phone: (844) 365-7246Fax: (844) 516-0080
Registry dates
- Enumerated
- 2018-08-15
- Last updated
- 2026-02-10
- Certified
- 2026-02-10
Frequently asked questions
- What is Harley Williams's NPI number?
- Harley Williams's National Provider Identifier (NPI) is 1811477300, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harley Williams's specialty?
- Harley Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Harley Williams located?
- Harley Williams's practice location on file with NPPES is 200 Banning St Ste 250, Dover, DE 19904-3492.
- What is Harley Williams's phone number?
- The practice phone number listed in the NPPES registry for Harley Williams is (302) 736-1320.
- Does Harley Williams accept Medicare?
- Harley Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Harley Williams's NPI active?
- Yes — Harley Williams's NPI (1811477300) is active in the NPPES registry as of the last update on 2026-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.