NPI 1265455018

John M. Schallenkamp, MD

Practitioner Radiation Oncology Physician Billings, MT

Practice location

Address: 801 N 29th St, Billings, MT 59101-0905
Phone: (406) 238-2500
Mailing address: PO Box 110429, Aurora, CO 80042-0429

Registered specialties (2)

Radiation Oncology Physician Primary

Allopathic & Osteopathic Physicians Taxonomy 2085R0001X Licence DR.0075716 (CO)

Other Radiology providers in Montana →

Radiation Oncology Physician

Allopathic & Osteopathic Physicians Taxonomy 2085R0001X Licence 10809 (MT)

Registry record

NPI: 1265455018
Entity type: Individual
Sex (as registered): Male
NPI issued: 25 Jul 2006
Record last updated: 15 Jul 2025

Reproduced from NPPES, the federal provider registry. The date above is when the provider last updated their own entry, not when we fetched it - a record can be years old and still current in the registry.