Paul F Oneill, M.D.
Hematology/Oncology · Internal Medicine · Medical Oncology (CMS) · Mchenry, IL
At a glance
4305 W Medical Center Dr Ste 1, Mchenry, IL 60050-8425
NPPES record updated Jul 28, 2025. 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
4305 W Medical Center Dr Ste 1Mchenry, IL 60050-8425
Additional reported practice locations
1713 S Kofa Ave Ste AParker, AZ 853446401
Phone: 9286697380
Fax: 9285751052 8415 N Pima Rd Ste 165
Scottsdale, AZ 852584486
Phone: 4802239805
Fax: 4802706020 700 W Ironwood Dr Ste 130
Coeur D Alene, ID 838144404
Phone: 2086254700
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1990
- CMS specialties
- Hematology/Oncology · Internal Medicine · Medical Oncology
Practice groups
Reported hospital affiliations
- Havasu Regional Medical Center Lake Havasu City, AZ
- Kingman Regional Medical Center Kingman, AZ
- Kootenai Health Coeur D'alene, ID
- Trinity Rock Island Rock Island, IL
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.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
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 |
|---|---|
| Food and beverage | $86.36 |
Reporting companies
| Company | Amount |
|---|---|
| EXELIXIS INC. | $43.40 |
| RIGEL PHARMACEUTICALS, INC. | $28.74 |
| ASTRAZENECA PHARMACEUTICALS LP | $14.22 |
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
- Hematology/Oncology · Internal Medicine · Medical Oncology (CMS)
- Taxonomy code
- 207RH0003X
- Enumeration date
- Aug 10, 2005
- Record updated
- Jul 28, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
174400000X
License reported: 22764 AZ
207RH0003X
License reported: 7371256 ID
207RH0003X
License reported: 22764 AZ
207RH0003X · Primary
License reported: 036163729 IL
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
4305 W Medical Center Dr Ste 1Mchenry, IL 60050-8425
- Phone
- (815) 759-8100
- Fax
- (815) 759-8106
Mailing address
PO BOX 910221DALLAS, TX 753910221
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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