Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Jeffrey Thomas Maddock, MD

Individual provider Vascular & Interventional Radiology Physician · NPI 1922450790

Jeffrey Thomas Maddock, MD practises Interventional Radiology in Bismarck, North Dakota. Graduated from University of North Dakota School of Medicine in 2016, 10 years ago. Practices with St Alexius Medical Center, a 241-clinician group and accepts Medicare assignment. Licensed in North Dakota.

Years since qualifying
10
Trained at
University of North Dakota School of Medicine
Licensed in
ND
In the registry since
2016
Specialties on file
2
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

900 E Broadway Ave
Bismarck, ND 58501-4520
Phone: (701) 530-5304
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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 18369 (ND)
Vascular & Interventional Radiology Physician Taxonomy 2085R0204X · Licence 18369 (ND)

Record details

NPI number1922450790
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 6, 2016
Last updated in NPPESDecember 18, 2023
Certification dateDecember 18, 2023

Medicare enrollment

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

Medicare specialtyINTERVENTIONAL RADIOLOGY
Medical schoolUNIVERSITY OF NORTH DAKOTA SCHOOL OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice St Alexius Medical Center — 241 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 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 patients1,530
Services billed 2,451 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 St Alexius Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 241 clinicians in the practice; 12 are shown here.