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

Carolyn Sierra Rust, MD

Individual provider Emergency Medicine Physician · NPI 1992097695

Carolyn Sierra Rust, MD is an Emergency Medicine in Great Falls, Montana. Graduated from Albany Medical College of Union University in 2011, 15 years ago. Practices with Benefis Hospitals Inc, a 398-clinician group and accepts Medicare assignment. Licensed in Colorado and Montana.

Years since qualifying
15
Trained at
Albany Medical College of Union University
Licensed in
CO, MT
In the registry since
2011
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1101 26th St S
Great Falls, MT 59405-5161
Phone: (406) 455-5200
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 55916 (MT)
Emergency Medicine Physician Taxonomy 207P00000X · Licence DR.0053676 (CO)

Record details

NPI number1992097695
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 12, 2011
Last updated in NPPESOctober 6, 2025
Certification dateOctober 6, 2025

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolALBANY MEDICAL COLLEGE OF UNION UNIVERSITY
Graduated 2011 (15 years in practice)
Group practice Benefis Hospitals Inc — 398 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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