Dr. John C. Sillery, MD
- Medicare services, 2024
- 1,464
- Medicare patients, 2024
- 1,073
- Hospital affiliations
- 9
- Industry payments
- $11
- Medical groups
- 19
- Practice address
- 620 S Haynes Ave, Miles City, MT 59301
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Miles City - Clinic - HOPD
Acute Care Hospital outpatient department · Miles City, Montana
Find Dr. Sillery's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John C. Sillery is a diagnostic radiologist in Miles City, Montana
Dr. Sillery practices at Miles City - Clinic - HOPD in Miles City, Montana.
Dr. Sillery's NPI, 1699752709, was assigned on December 29, 2005. Dr. Sillery holds Montana license 11712.
- NPI
- 1699752709NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456389402
- NPI enumeration date
- December 29, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John C. Sillery practices at Miles City - Clinic - HOPD in Miles City, Montana
Dr. Sillery's primary practice is Miles City - Clinic - HOPD, at 620 S Haynes Ave, Miles City, MT 59301.
- Miles City - Clinic - HOPD620 S Haynes Ave, Miles City, MT 59301
Source: Dmand AI Affiliation Data
Dr. John C. Sillery is affiliated with 13 sites of care and 19 medical groups
Dr. Sillery's primary practice is Miles City - Clinic - HOPD in Miles City, Montana. Dr. Sillery is also affiliated with Billings Clinic Hospital. The medical group on file is Billings Clinic. Dmand AI also links Dr. Sillery to 8 more hospitals, 18 medical groups, 2 group practices and clinics and 1 breast imaging center, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John C. Sillery's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sillery practices, 13 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Miles City - Clinic - HOPD | Available with a free account |
| +12 more sites and 18 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John C. Sillery is one of 115 diagnostic radiologists in Montana
Diagnostic radiology is Dr. Sillery's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dmand AI has Dr. Sillery's licenses on file in 2 states: Montana and Minnesota.
Specialties and state licenses
- Diagnostic radiology, MontanaPrimary
- Minnesota license
Diagnostic radiologists near Dr. Sillery
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John C. Sillery billed Medicare for 1,464 services in 2024
CMS data shows 1,464 Medicare services from Dr. Sillery across 30 procedure codes in 2024, for 1,073 Medicare patients. Medicare paid $28,219 for them.
Dr. Sillery's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,4312024: 1,3804%
- Tests and treatments
- 2023: 862024: 842%
Where Dr. Sillery's Medicare services took place, 2024
- In an office1,01069%
- In a facility45431%
Dr. Sillery compared with the Montana median for diagnostic radiologists, 2024
- Dr. Sillery
- Montana median
- Medicare services
- 1,464vs 2,78948% below
- Medicare patients
- 1,073vs 2,29353% below
Medians across 123 diagnostic radiologists in Montana with Dmand AI profiles that report each measure.
Dr. Sillery's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Sillery?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sillery and other diagnostic radiologists in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John C. Sillery treated 1,073 Medicare patients in 2024, average age 75
CMS counts 1,073 Medicare patients who saw Dr. Sillery in 2024. The largest group is 65 to 74, with 498 patients. 72% of them have high blood pressure, and 57% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Sillery's median patient age at 75, with 59% women.
Dr. Sillery's Medicare patients by age, 2024
Dr. Sillery's Medicare patients by sex, 2024
- Women61557%
- Men45843%
Chronic conditions among Dr. Sillery's Medicare patients, 2024
- High blood pressure72%
- High cholesterol57%
- Arthritis47%
- Diabetes30%
- Mood disorders24%
- Chronic kidney disease22%
- Depression22%
- Ischemic heart disease19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sillery's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. John C. Sillery takes part in Medicare
Dr. Sillery accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John C. Sillery received $11 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Sillery from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Siemens Medical Solutions USA, Inc. paid the most, $11.
Companies that paid Dr. Sillery the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John C. Sillery's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John C. Sillery
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John C. Sillery's NPI number?
Dr. John C. Sillery's NPI number is 1699752709. It was assigned on December 29, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John C. Sillery?
Dr. John C. Sillery is a diagnostic radiologist in Miles City, Montana. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. John C. Sillery practice?
Dr. Sillery practices at 620 S Haynes Ave, Miles City, MT 59301. Dr. Sillery's primary practice is Miles City - Clinic - HOPD in Miles City, Montana. Dmand AI also links Dr. Sillery to 8 hospitals, 18 medical groups, 2 group practices and clinics and 1 breast imaging center.
What is Dr. John C. Sillery's medical license number?
Dr. Sillery holds Montana license 11712, one of the licenses on file in 2 states.
Which states has Dr. John C. Sillery been licensed in?
Dmand AI has state licenses on file for Dr. Sillery in Montana and Minnesota.
Which hospitals is Dr. John C. Sillery affiliated with?
Dr. Sillery is affiliated with Billings Clinic Hospital. Dmand AI links Dr. Sillery to 8 more hospitals.
What medical group is Dr. John C. Sillery part of?
Dr. Sillery is linked to Billings Clinic. Dmand AI links Dr. Sillery to 18 more medical groups.
Does Dr. John C. Sillery accept Medicare?
Yes. CMS data shows Dr. Sillery billed Medicare for 1,464 services in 2024, and Dr. Sillery accepts Medicare assignment.
How many Medicare patients does Dr. John C. Sillery see?
CMS counts 1,073 Medicare patients who saw Dr. Sillery in 2024, with an average age of 75.
What services does Dr. John C. Sillery bill to Medicare?
In 2024, Dr. Sillery's most billed Medicare services were diagnostic imaging (71046), radiation oncology (77080) and diagnostic imaging (74177).
Has Dr. John C. Sillery received payments from drug or device companies?
CMS Open Payments shows $11 in general payments to Dr. Sillery from 1 company from 2019 to 2019. The largest total came from Siemens Medical Solutions USA, Inc.
How long has Dr. John C. Sillery been practicing?
Dr. Sillery graduated from medical school in 2004, 22 years ago.
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