Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Darren P O'Neill, MD

Individual provider Neuroradiology Physician · NPI 1982781373

Darren P O'Neill, MD practises Radiation Oncology in Milwaukee, Wisconsin. Graduated from Medical College of Wisconsin in 2001, 25 years ago. Practices with The Medical College of Wisconsin Inc, a 2,093-clinician group and accepts Medicare assignment. Licensed in Indiana and Wisconsin.

Years since qualifying
25
Trained at
Medical College of Wisconsin
Licensed in
IN, WI
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9200 W Wisconsin Ave Dept OF Radiology
Milwaukee, WI 53226-3522
Phone: (414) 805-3750
Fax: (414) 259-9290
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 66540 (WI)
Neuroradiology Physician Taxonomy 2085N0700X · Licence 01058893 (IN)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 01058893 (IN)
Neuroradiology Physician Taxonomy 2085N0700X · Licence 66540 (WI)

Record details

NPI number1982781373
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 1, 2006
Last updated in NPPESJanuary 17, 2017

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRADIATION ONCOLOGY
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 2001 (25 years in practice)
Group practice The Medical College Of Wisconsin Inc — 2093 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations11 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients2,003
Services billed 196,738 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at The Medical College of Wisconsin Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2093 clinicians in the practice; 12 are shown here.

Other providers in Milwaukee