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OUR PROFESSIONAL STAFF
  Call (800)227-3953

alcoholism

alcohol treatment Rimrock Foundation's Professional Staff Welcomes You!

Our staff hope you have a pleasant visit to our Web site and we look forward to helping you in any way we can. Here are some of the people you will meet when you visit our program:
David W. Cunningham MHA ACATA
Chief Executive Officer
Mona L. Sumner MHA ACATA
Chief Operations Officer/Clinical Director
George Sheckleton MD
Medical Director
Rick L. Pullen DO,
Director of Psychiatric Services
Jon Gjersing RN
Nursing Supervisor
Michael Cahill LCSW
Inpatient Supervisor
Jen Porter LAC
Admissions Supervisor
Walter Shore MS, LAC, NCACII
Outpatient Supervisor

meth

David W. Cunningham, M.H.A., Chief Executive Officer
David has over 25 years experience in health care administration and the treatment of chemical dependency. He is experienced in every aspect of administration, and supervises all departments at Rimrock Foundation. He is a member of the American College of Addiction Treatment Administrators (ACATA), and is a board member of the National Association of Addiction Treatment Providers (NAATP).

drug rehab

Mona L. Sumner, M.A.C., M.H.A., Chief Operations Officer/Clinical Director
In addition to her duties as Chief Operations Officer, Mona is also the Foundation's Clinical Director. She has spent over thirty years specializing in the treatment of addictions, and manages all aspects of the patient care programs at Rimrock. She has published numerous articles, and travels extensively giving workshops on addictions and relationship illnesses. She is a member of both the American College of Addiction Treatment Administrators (ACATA), and the National Association of Addiction Treatment Providers (NAATP).

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George Sheckleton, M.D., M.P.H., Medical Director
George has over 20 years experience as a Health Officer and Director of the City-County Health Department. He is responsible for not only providing direct medical care for our patients, but also the supervision of other medical professionals and the coordination of all medical services at Rimrock Foundation. George holds a certification in alcoholism and other drug dependencies through examination by the American Society of Addiction Medicine (ASAM).

marijuana

Rick L. Pullen, D.O., Director of Psychiatric Services
Dr. Pullen brings a long career in internal medicine and psychiatry to his position as Director of Psychiatric Services at Rimrock Foundation. Board Certified in both specialties, Dr. Pullen also has a background working with adolescents in a residential treatment program over several years.

marijuana

Jon Gjersing, R.N., Nursing Supervisor
Jon's primary responsibility is to ensure the quality of the medical care received by our patients. He also supervises the nursing team and coordinator in the delivery of psychiatric care for our dual diagnosis patients.

dual diagnosis

Michael Cahill , LCSW, Inpatient Supervisor
Michael is the supervisor of the Foundation's inpatient program. He brings many years of clinical experience to this position having held positions in two mental health centers and a behavioral health hospital-based unit before joining our team. Michael is a native of Montana and received his Masters in Social Work from Eastern Washington State University.

alcohol information

Jen Porter, LAC, Admissions Supervisor
Jen is responsible for the day-to-day operations of the Admissions Department. She is often the first Rimrock staff member you have contact with. She is available to answer questions, make reservations, and provide general guidance which will make planning your stay with us easier and successful.

alcohol information

Walter Shore, MS, LAC, NCACII Outpatient Supervisor
Walter is responsible for the day-to-day operation of the Outpatient Department and the Silver Leaf Center. In addition, he oversees the Sober Housing Program and acts as liaison between Rimrock Foundation and the Billings Adult Drug Court.

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alcohol treatment
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