John M. Schallenkamp, MD
John M. Schallenkamp is a Radiation Oncology Radiology specialist based in Billings, MT with over 26 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: HEMATOLOGY/ONCOLOGY
John M. Schallenkamp, MD has practiced radiology for 26+ years, working in group practice. A Medical College of Wisconsin graduate since 2000, he brings 26+ years of experience. He regularly sees Medicare patients with cancer, hypertension, and high cholesterol (per CMS claims data). CMS MIPS quality score: 94.31/100 (2023).
At a glance
- Federal MIPS score higher than 69% of MIPS-scored doctors in Montana
- Virtual visits available — no app or travel required
Older · 313dNPPES updated 2025-07-15 · verify NPI on CMS · Verify license at Montana Board of Medical Examiners
How Does This Doctor Compare?
Based on Medicare data, this doctor has an average quality score compared to other doctors in Montana.
MIPS Score
202394.31/100
Montana avg: 84.7 · US avg: 83.6
✓ Higher than most doctors nationally(+10.7 pts)
Average range among MIPS-scored doctors in MontanaHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Medicare Patients
265
Unique beneficiaries
Standard volumePrescription Recipients
27
Patients prescribed
Prescriptions Written
62
Total claims
Total Medicare drug cost: $909
Percentile rankings compared against 214 reporting peers in Montana.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Cancer, Hypertension, and High Cholesterol.
Diseases involving abnormal cell growth with potential to spread to other body parts
US avg: 20.8%↑ More patients than average (+54%) — a focus area for this doctor
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↓ Fewer patients than average (-6%) — less common here
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↓ Fewer patients than average (-16%) — less common here
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-21%) — less common here
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ Fewer patients than average (-8%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$21 received from industry
1 transaction reported in 2024 ·Low tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to John M. Schallenkamp's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2000
Medical College of Wisconsin
Board certified · Jul 14, 2025
Self-reported via NPPES
26 years in practice
Experienced
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
Taxonomy: 2085R0001X
Education & Training
Medical College of Wisconsin (Class of 2000)
Mailing address
Po Box 110429, Aurora, CO 80042-0429
Differs from practice location
Virtual Radiation Oncology Care With John M. Schallenkamp
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with John M. Schallenkamp for follow-up consultations, blood pressure monitoring, cholesterol management — no travel to Billings required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about John M. Schallenkamp
NPI records show Dr. Schallenkamp as active with telehealth listed in Billings, MT. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (406) 238-2500.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact John M. Schallenkamp
Practice Location
801 N 29th St, Billings, MT 59101-0905
Mailing Address
Po Box 110429, Aurora, CO 80042-0429
This is a provider directory. Contact the office directly to schedule appointments.
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