Staff at Rimrock Prosthetics, Inc.

James Middleton, CP - Owner, Lead Prosthetics Tech


Andrew Long - Ostomy Specialist, Prosthetic Tech


Nicole Kellog

- Office Manager





Contact Us

1139 N 27th St 

Suite C-2

Billings, MT 59101


Call us at 406-252-6100 or use our contact form. 



Business Hours


8 a.m. - 5 p.m. Monday-Friday



Connect With Us.

Jim Middleton



Education & Activities

Jim graduated from the University of Minnesota with a Bachelors of Science degree in prosthetics and is an American Board Certified Practitioner.  He also served an NCOPE accredited residency at the University of Michigan Orthotic and Prosthetic Center.

The University of Michigan Orthotics and Prosthetics Center, a division of the Department of Physical Medicine and Rehabilitation, has a long history of providing high quality residencies for orthotic and prosthetic program graduates.  The center offers three residencies per year, two in orthotics and one in prosthetics.  Jim was able to attend to patients in a variety of settings, inpatient and outpatient, public and private.  Being a regional care center and trauma center, the diversity of pathologies and injuries is exceptional, providing Jim with a scope and depth of experience that is rare.  That experience is built on a foundation consisting of the academic resources of the University of Michigan and an academically based and trained clinical staff.

Outside of the office, Jim is actively involved in the community through Eagle Mount activities year round with the winter skiing program and the summer cycling program.  In previous years, Jim has participated in several programs through the U.S. such as Winter Park skiing instruction in Colorado.


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