MAC Employees

Picture of  Bree Rutten

Bree Rutten BScPE, BScPT Physical Therapist, MAC USask Chronic Pain Clinic

Bree Rutten graduated from the University of Saskatchewan with a degree in Physical Education in 1998 followed by a degree in Physical Therapy in 2001. Since graduation, she has focused on treatment of pelvic disorders, with advanced training focusing on concerns of the bladder, bowel, pregnancy and pelvic pain. Currently, she works in the area of chronic pain concerns at the MAC iOPS program. The focus of treatment is creating balance and strength to create a strong base for everyday life activities and fitness. This applies to anyone, of any age, gender or activity levels. In addition to clinical treatment, Bree also participates in workshops, conferences and groups to provide education on pelvic and core function throughout the province.


Picture of  Carrie Verishagen

Carrie Verishagen RD Registered Dietitian

Carrie is a registered dietitian with the MAC and MAC iOPS team. She received her Bachelor of Science in Nutrition from the University of Saskatchewan in 2008 and during that time was a member of the Huskie Volleyball team. Carrie is also the Director of the Eat Well Saskatchewan service that provides free nutrition advice to residents of Saskatchewan. Since graduating in 2008 she has worked in many areas including over ten years experience in the area of Indigenous nutrition with the Saskatoon Tribal Council as well as working in the areas of chronic disease management, prenatal and sport nutrition. Carrie is a mother of two boys, loves to garden, and cook. Whenever she is not busy with her family, she can be found on the golf course, enjoying the fresh air and competing in tournaments across Saskatchewan.


Picture of Dr. Derek Jorgenson

Dr. Derek Jorgenson BSP, PharmD, FCSHP Director, MAC and USask Chronic Pain Clinic

Derek is the director of both the Medication Assessment Centre (MAC) and the Medication Assessment Centre Interprofessional Opioid Pain Service (MAC iOPS). He is a licensed pharmacist who participates in patient consultations in the MAC and is the clinical co-lead of MAC iOPS. Derek is also a professor in the College of Pharmacy and Nutrition. He is a father of two teenage boys and likes to travel, read, fish, and run in his spare time.


Picture of  Eric Landry

Eric Landry BSP, ACPR, MEd Coordinator and Pharmacist, MAC and USask Chronic Pain Clinic

Eric received his Bachelor of Science in Pharmacy (BSP) in 2011 from the University of Saskatchewan. He went on to complete a Hospital Pharmacy Residency with the Regina Qu'Appelle Health Region in 2012. Following residency, Eric worked as a hospital pharmacist at the Royal University Hospital in Saskatoon, before taking a position with the College of Pharmacy and Nutrition as coordinator of the Medication Assessment Centre. In his role, Eric facilitates experiential learning opportunities for undergraduate pharmacy students in which they provide individualized care to patients who are referred to MAC. He is also a clinical pharmacist with the new MAC iOPS team. Eric has a special interest in Cognitive Behavioral Therapy for Insomnia (CBTi), and has seen this aspect of practice grow in recent years. Eric has recently completed his Master's in Education Administration with a focus on teaching and learning in post secondary education. In his free time, Eric joins his wife Chelsea in chasing after their 4 kids.


Picture of  Isobel Johnston

Isobel Johnston BScKin, BScPT, GC Pain Physical Therapist, USask Chronic Pain Clinic

Isobel Johnston has been a physical therapist in Saskatoon since her convocation from the University of Saskatchewan in 2008, and currently is the physical therapist with the MAC iOPS team. She had worked exclusively in private orthopaedic practice until the opportunity to join MAC iOPS presented. Isobel's interest in chronic pain stemmed from her exposure in private practice to many amazing patients who struggled with chronic pain. These interactions led her career down a path of education focussed on pain science. In 2020, she earned a Graduate Certificate in Pain Management from the University of Alberta. Isobel likes being outdoors and values physical activity. She participates in triathlon, but also enjoys canoeing and camping, as well as cross-country skiing and the odd snowboarding trip with friends. Isobel has an energetic dog and an equally energetic toddler and is lucky enough to have a spouse that helps her navigate through it all!


Picture of  Jennifer King

Jennifer King BSW, MSc, RSW Medical Social Worker, USask Chronic Pain Clinic

Jennifer is a social worker with MAC iOPS. She completed her Bachelor of Social Work at the University of Regina in 2003 and a Master's in Health Sciences at the University of Saskatchewan in 2021 with a special interest in the role of social work in bleeding disorders and pain management. She has a particular curiosity in helping regulate the central nervous system through counseling strategies to change the experience of pain. In her free time she enjoys homeschooling, being in the kitchen, cultivating house plants, and going on outdoor adventures.


Picture of  Johnna Janzen

Johnna Janzen Medical Office Assistant, MAC and USask Chronic Pain Clinic

Johnna is one of the Medical Office Assistants at the MAC and MAC IOPS. She completed her Medical Office Assistant Diploma in 2003 and has been working in the medical field since. Johnna enjoys thrifting, reading and chihuahuas.


Picture of Dr. Katelyn Halpape

Dr. Katelyn Halpape BSP, ACPR, PharmD, BCPP Clinical Co-Lead, USask Chronic Pain Clinic

Katelyn is the clinical co-lead for MAC iOPS. She completed her Bachelor of Science in Pharmacy at the University of Saskatchewan in 2012 and her Hospital Pharmacy Residency in Regina in 2013. In 2015, Katelyn completed the Doctor of Pharmacy program at the University of British Columbia. Katelyn is board certified in Psychiatric Pharmacy. Before returning to Saskatchewan, Katelyn worked as a Clinical Pharmacy Specialist at Vancouver General Hospital in the areas of neurology and psychiatry. In December 2018, Katelyn accepted the position of Assistant Professor in the areas of mental health, addictions and neurology with the College of Pharmacy and Nutrition at the University of Saskatchewan. She also works as a consultant clinical pharmacist in psychiatry and addictions with the Saskatchewan Health Authority. In her spare time, Katelyn can be found training for her next triathlon race, enjoying nature, listening to music and baking.


Picture of  Marissa Pirlot

Marissa Pirlot BSP Administrative Assistant, MAC and USask Chronic Pain Clinic

Marissa is one of our administration assistants at the Medication Assessment Centre. She completed her Bachelor of Science in Pharmacy degree at the University of Saskatchewan and is currently completing her Master's degree, also at the University of Saskatchewan, with a focus on Indigenous and queer health. Marissa enjoys cooking, watching movies, and playing sports with family and friends.


Picture of Dr. Radhika Marwah

Dr. Radhika Marwah MBBS, MD, MSc-AMH, CCFP Consulting Physician, USask Chronic Pain Clinic

Dr. Marwah is our consultant physician on the MAC iOPS team. Although you will not see her in person, she works behind the scenes with our pharmacists and team to help provide you with the best care. As a physician consultant on the team, she is involved in discussions revolving around running our MAC iOPS clinic as well as participating in case conferences. Radhika completed her medical schooling in India and was trained as an anesthesiologist. She then moved to Canada where she completed a Master's degree in Community Health with a specialization in Addictions and Mental Health from Dalla Lana School of Public Health in Toronto. After, she moved to Regina where she worked as a primary healthcare physician with the Saskatchewan Health Authority for 5 years. During her time in Regina, Radhika led an interdisciplinary team comprising of family physicians, a nurse practitioner and pharmacist to deliver care to marginalized and high needs communities in Regina. Meadow Chronic Pain Clinic, led by Radhika, is a leading site in providing optimum and evidence-based care of chronic pain and opioid dependence. Currently, Radhika is working as a physician with the Interprofessional Pain and Addictions Recovery Clinic at the Centre of Addictions and Mental Health (CAMH) at the University of Toronto. In her spare time, Radhika enjoys regular workouts to maintain her fitness, nature walks, and spending time with family. Radhika also enjoys traveling and connecting with family overseas as well as watching crime shows and reading.


Picture of  Tanis Walmsley

Tanis Walmsley BSW, RSW Medical Social Worker, USask Chronic Pain Clinic

Tanis is one of the two social workers working at MAC iOPS. She is originally from Alberta but has lived in Saskatoon for 25 years. She completed her Bachelor of Social Work in 1999. She has worked as a social worker at all three Saskatoon hospitals, was a counselor at the University of Saskatchewan Student Health Centre, led groups and provided individual counseling with Mental Health Services at the Anxiety and Mood Disorder Clinic, and provided individual counseling and helped run groups at Community Services. On the MAC iOPS team, Tanis is interested in supporting clients as they develop and use non-pharmacological ways to help reduce pain and to cope with its impact on their lives. In her free time, Tanis enjoys spending time with her husband and three boys, having friends and family around their table (go away COVID!!), reading, being outside in nature with her dog (and whomever else wants to join), painting and watching stand up comedy.


Picture of  Tracy Hastings

Tracy Hastings Project Manager, MAC and USask Chronic Pain Clinic

Tracy is the Project Manager for the MAC and MAC IOPS. Tracy has her Masters Certificate in Project Management and is working on her BComm (Human Resources and Management) degree at the University of Saskatchewan. Tracy has worked in various administrative positions during her working career including administrator of a rural health centre and quality care advisor for the College of Physicians and Surgeons of Saskatchewan. In her spare time, Tracy can be found spending time with her large blended family, in her sewing room quilting and making clothes and other items for her grandchildren, and spending time with her husband and pets.