John C. Sillery, M.D.
Diagnostic Radiology Physician · Billings, MT
John C. Sillery, M.D. is a diagnostic radiology physician with a practice address in Billings, Montana, and NPI 1699752709, issued on Dec 29, 2005. Check the license (Montana 11712, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John C. Sillery
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- 11712 MT
48044 MN
Self-reported in NPPES; status is on the state search - Practice location
- 2800 10TH Ave N, Billings, MT 59101
- Phone
- (406) 238-2500
- Enumerated
- Dec 29, 2005
- Record last updated
- Jan 3, 2022
- Medicaid ID
- 430077700 MN
- Medicare enrollment
- Enrolled (PECOS I20081230000156); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 108 in Montana → Look up another NPI →
Also registered at 2800 10TH Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ellen Absher, FNP-CFamily Nurse Practitioner1609709997
- Kimberly Ackerman, FNPAdult Health Nurse Practitioner1922032861
- Deborah Agnew, MDPediatrics Physician1134178072
- Stefan AlinteCertified Registered Nurse Anesthetist1518899053
- Erin Allen, MDPediatrics Physician1801052758
- Nathan Allen, M.D.Emergency Medicine Physician1356676878
Verify John C. Sillery in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 11712Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6 hospitals and group practices
- North Big Horn Hospital DistrictLovell, WY · Critical Access Hospitals4 of 5 stars
- Billings ClinicCody, WY
- Daniels Memorial HospitalScobey, MT · Critical Access Hospitals
- Glendive Medical Center IncGlendive, MT
- Powell Valley Health Care IncPowell, WY
- Sheridan Memorial Hospital AssociationPlentywood, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
John C. Sillery among 108 diagnostic radiology physician records in Montana
John C. Sillery, M.D. is one of 108 diagnostic radiology physician records with a practice address in Montana. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 62% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2004 · median 2004 among the 64 with a school on file
- Record last updated2022 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Montana
There are 108 diagnostic radiology physician records in Montana.
All 108 in Montana → Every provider in Billings → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Tara Bowman Seitz, MDBillings, MT 591011215999222
- John Brandon, MDBillings, MT 591011912943978
- Dean Bruschwein, MDBillings, MT 591011568482081
- James Cole, MDBillings, MT 591011992708879
- Ronald Darby, MDBillings, MT 591011992816722
- Robert Dietz, MDBillings, MT 591011174559124
- Joseph Dillard, MDBillings, MT 591011114963949
- Jonathan Graeve, MDBillings, MT 591011538271507
Common questions
What is John C. Sillery, M.D.'s NPI number?
John C. Sillery, M.D.'s National Provider Identifier (NPI) is 1699752709, issued on Dec 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John C. Sillery, M.D. located?
The NPPES record lists a practice address at 2800 10TH Ave N, Billings, MT, 59101. Phone: (406) 238-2500. Providers update this record themselves, so call before visiting.
How can I verify John C. Sillery, M.D.'s license?
NPPES lists Montana license number 11712, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.