Rocky Mountain Treatment Center’s Medical and Clinical Professionals are highly trained and compassionate individuals. They work very hard to provide the clients with the best quality of care and ensure their safety remains the highest priority while they begin their journey in the recovery process.

Dr. Brice Addison, MD

Medical Director

Dr. Addison attended Mayo Medical School and Mayo Clinic Graduate School of Medicine. He is board certified in internal medicine and addiction. Dr. Addison has worked in long-term care since 1984. He is also a member of the Great Falls Symphonic Choir and the American College of Physicians. When he has free time, he enjoys skiing, hiking, mountain biking, bicycling, opera and the symphony.

Mary Gray, FNP

Internal Medicine, Primary Care

Mary E Gray is a Nurse Practitioner Specialist in Great Falls, Montana. She graduated with honors in 1988. Having more than 29 years of diverse experiences, especially in NURSE PRACTITIONER, Mary E Gray affiliates with many hospitals including Benefits Hospitals Inc, Great Falls Clinic Hospital, and cooperates with other doctors and specialists in medical group Benefis Hospitals, Inc. Mary Gray provides an invaluable medical service for the clients at Rocky Mountain Treatment Center

Jeff Quackenbush


Jeff became the Administrator of Rocky Mountain Treatment Center in 2015. With a background in hospitality, he is truly in the business of helping people. His love of Montana and people brought him to Rocky. You will find him interacting with clients and making sure the most excellent care is given to our guests

Scott Jaynes, LAC

Clinical Director

Scott has been with Rocky Mountain Treatment Center for 5 years. He received his addiction counseling degree from the University of Great Falls. After working as a Licensed Addiction Counselor for many years, Scott moved into Rocky's Clinical Director position. When Scott has free time, he enjoys fishing, camping, and hiking with his wife of 25 years and his 3 dogs.

Kelly Kaufman, LPN

Medical Supervisor

Kelly’s supervises and manages the medical team at Rocky Mountain Treatment Center.

Jessica Hofer, LAC, PATH

Counselor, Equine Therapy Coordinator

Jessica runs our equine therapy program. She is a Licensed Addiction Counselor, receiving her degree from the University of Great Falls. She is also a certified instructor through Professional Association of Therapeutic Horsemanship, International. She has worked at Rocky since 2012. Jessica is active in her church community, softball, camping and enjoys spending time with her horses.

Terrie Sandstrom, LAC

Family Program Counselor

Cody Pardue, LAC

Trudy Nelson

George Meadors, LACe

James Winters

Case Manager

Chris Vermillion

Head of Treatment Assistants

Vicki Warbis

Health Information Manager,HIPAA Security Officer

HIPAA (Health Insurance Portability and Accountability Act of 1996) is United States legislation that provides data privacy and security provisions for safeguarding medical information

Cheryl Voeller

Human Resource Manager

Renee Johnson


Teresa Applewick

Administrative Assistant