John Schallenkamp MD
About this NPIWhat this record shows.
NPI 1265455018 is registered to John Schallenkamp MD, a Radiation Oncology Physician practising at 801 N 29th St in Billings, Montana. Radiation Oncology Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. John Schallenkamp MD has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Your brand here.
Medicare enrollment
This provider holds 3 Medicare enrollments on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20050721000886Radiation OncologyMT
- I20060110000705Radiation OncologyWY
- I20250804000944Radiation OncologyCO
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans John Schallenkamp MD accepts. To confirm in-network status with your specific health plan, contact John Schallenkamp MD directly at (406) 238-2500.
Frequently asked
Yes. NPI 1265455018 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Radiation Oncology Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (406) 238-2500.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. John Schallenkamp MD is a Type-1 individual NPI.