Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Barr J Petersen, MD

Individual provider Internal Medicine Physician · NPI 1497933667

Dr. Barr J Petersen, MD is a Hospitalist in Billings, Montana. Qualified in 2006, 20 years ago. Practices with Billings Clinic, a 805-clinician group and accepts Medicare assignment. Licensed in Arizona, California, Montana and Utah.

Years since qualifying
20
Licensed in
AZ, CA, MT, UT
In the registry since
2008
Specialties on file
5
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

2800 10th Ave N
Billings, MT 59101-0703
Phone: (406) 238-4145
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence MED-PHYS-LIC-48400 (MT)
Internal Medicine Physician Taxonomy 207R00000X · Licence A125745 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 42002 (AZ)
Internal Medicine Physician Taxonomy 207R00000X · Licence 6851493-1205 (UT)
Internal Medicine Physician Taxonomy 207R00000X · Licence 48400 (MT)

Record details

NPI number1497933667
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 9, 2008
Last updated in NPPESFebruary 4, 2025
Certification dateFebruary 4, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Medical schoolOTHER
Graduated 2006 (20 years in practice)
Group practice Billings Clinic — 805 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Billings