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

Individual provider Diagnostic Radiology Physician · NPI 1699752709

John C Sillery, MD practises Diagnostic Radiology in Billings, Montana. Qualified in 2004, 22 years ago. Practices with Daniels Memorial Hospital, a 23-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Minnesota and Montana.

Years since qualifying
22
Licensed in
MN, MT
In the registry since
2005
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

2800 10th Ave N
Billings, MT 59101-0703
Phone: (406) 238-2500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 202 Prospect Dr, Glendive, MT 59330-1999 — (406) 345-3306

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 11712 (MT)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 48044 (MN)

Record details

NPI number1699752709
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 29, 2005
Last updated in NPPESJanuary 3, 2022
Certification dateJanuary 3, 2022

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Daniels Memorial Hospital — 23 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations10 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 patients1,073
Services billed 2,042 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Colleagues at Daniels Memorial Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 23 clinicians in the practice; 12 are shown here.

Other providers in Billings