Arthur Leroy Williams, MD
Infectious Disease · Internal Medicine (CMS) · Harrisburg, PA
At a glance
1821 Fulton St, Harrisburg, PA 17102-1522
NPPES record updated Jul 9, 2007. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
1821 Fulton StHarrisburg, PA 17102-1522
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1991
- CMS specialties
- Infectious Disease · Internal Medicine
Practice groups
Reported hospital affiliations
- Upmc Pinnacle Hospitals Harrisburg, PA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Services other than consulting | $9,750.00 |
| Consulting fee | $5,450.00 |
| Travel and lodging | $5,062.30 |
| Food and beverage | $1,230.30 |
Reporting companies
| Company | Amount |
|---|---|
| GILEAD SCIENCES, INC. | $20,923.41 |
| NOVO NORDISK INC | $166.31 |
| EXACT SCIENCES CORPORATION | $83.29 |
| VIIV HEALTHCARE COMPANY | $80.04 |
| LILLY USA, LLC | $77.27 |
| GLAXOSMITHKLINE, LLC. | $43.38 |
| ABBOTT LABORATORIES | $36.05 |
| ABBVIE INC. | $27.76 |
| Other reporting companies | $55.09 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Infectious Disease · Internal Medicine (CMS)
- Taxonomy code
- 207RI0200X
- Enumeration date
- Sep 20, 2006
- Record updated
- Jul 9, 2007
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207RI0200X · Primary
License reported: MD055892L PA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
1821 Fulton StHarrisburg, PA 17102-1522
- Phone
- (717) 230-3906
- Fax
- (717) 230-3914
Mailing address
1821 FULTON STHARRISBURG, PA 171021522
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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