Cook Medical Clinic

Hours: Monday – Friday 8-5, Saturday 8-12
20 Fifth St. SE, Cook, MN 55723

Phone (218) 666-5941 Fax (218) 666-5099

How do I reach my medical provider after hours?

Scenic Rivers Health Services has a physician on-call 24 hours a day, 7 days a week.  If you have a question regarding medical care that needs to be addressed before or after office hours please contact the number above.  If you do need to reach us after hours for an urgent matter, our physician on-call is available by phone.  Our number listed above will allow you an option to be transferred to the Cook Hospital nurses’ station who have contact with our physicians.  The nurse will help you assess your concern and communicate further with the physician as needed.  If indeed you need emergency room services, these are available 24/7.  For your convenience we are open Saturday morning from 8 AM to 12 PM for acute medical needs.

Cook Hospital Website:


Release of Information – Cook Medical
Release of Information – Cook Behavioral Health


Amy Banks, MD

Dr. Amy Banks grew up in Mt. Iron, MN. She received her degree in engineering from the University of Minnesota in 1996 and her medical degree in 2003. Dr. Banks completed her residency in Family Medicine at North Memorial Hospital in Robbinsdale, MN. The next 12 years she worked as a physician in Salt Lake City before moving back to the Iron Range in 2019. Dr. Banks loves being a mom and spends most of her free time trying to reign in her wild young kids, enjoying great Minnesota outdoors together. Dr. Banks practices full-scope family medicine including geriatrics, women’s health, pediatrics, and acute and chronic care. She especially enjoys the “teaching” part of practicing medicine: helping patients feel informed and empowered about their health.

Amy practices at the Cook Medical and Tower Medical clinics.

Celin Williams, LICSW

Celin Williams grew up in Ely, MN.  She obtained her undergraduate degree in social work from Bemidji State University in 2009 and her graduate degree in social work from the University of North Dakota in 2010. She began her career working as a nursing home social worker in Minneapolis before moving home to work as a therapist for Range Mental Health in Ely and Virginia. She started with Scenic Rivers in 2018, practicing in the Cook and Bigfork Medical clinics.  With her history in gerontology, she especially enjoys working with our elders. Celin spends her time cross country skiing, snowboarding, quilting, swimming, watching Netflix, eating sushi, and spending time with family. She is a volunteer coach with Ely’s MYSL program teaching cross country skiing to children. Celin is available to address all mental health concerns with children ages six and older and adults of all ages.

Celin practices at the Cook Medical, Tower Medical and Eveleth Medical clinics.

Charles Tietz, MD

Charles Tietz, MD joined Scenic Rivers after years of practice in Virginia, MN.  He received his undergraduate degree from St. Olaf College, and attended medical school at the University of Chicago.  After an internship at the Hennepin County Medical Center, he went on to train at the University of Minnesota’s Residency in Obstetrics, Gynecology and Women’s Health.  Dr. Tietz brings with him a wealth of knowledge in women’s health, and he practices in gynecology and minimally invasive surgeries in Cook and Tower.  When he is not at work, he and his wife Vicki enjoy biking and gardening at their home.

Dr. Tietz practices at the Cook Medical, Tower Medical and Eveleth Medical clinics.

Cynthia Sandberg, APRN, FNP

Cindy Sandberg, APRN, FNP and her husband moved to the Vermilion area after spending many years vacationing up here.  Cindy comes with a wide variety of experiences as a Family and Pediatric Nurse Practitioner, having worked as the medical provider on a large inpatient mental health unit and chemical dependency treatment program, as well as a chronic pain clinic.

Cindy graduated from the College of St. Benedict with a Bachelor of Science degree in Nursing in 1978,  earned her Master’s degree in Nursing (Pediatric Nurse Practitioner) at the University of St. Catherine in 1998, then post-Masters Family Nurse Practitioner at Mankato State University in 2001 once her six children were all in school.

Cindy is excited about living and working in this pristine natural area, to enjoy real winters, and beautiful summers. In her spare time, she enjoys walking miles, gardening, fishing, spinning on her spinning wheel, knitting and spending time with their grandchildren.

Cindy practices at the Cook Medical clinic.

Emily Wild, CNP

Emily grew up in Duluth, MN and attended Bethel University in 2010 where she received her Bachelor’s. She started her career as a registered nurse in 2014 at United Hospital in St. Paul, MN. She returned to school in 2018 at Metropolitan University to pursue becoming a Nurse Practitioner. She graduated in May 2022 with a DNP degree and is excited to begin her career at Scenic Rivers. She is passionate about providing holistic care for patients and assisting them on their own path to health and well-being.

Emily practices at Cook Medical and Tower Medical clinics.

Eric Elleby, MD

Dr. Eric Elleby is a 2014 graduate of the University of Illinois School of Medicine and completed his residency in Family Medicine at La Crosse-Mayo Family Medicine Residency.  He is Board Certified by the American Board of Family Practice.  Dr. Elleby was born and raised in southern Minnesota on a small dairy farm, and is an avid Minnesota sports fan, fisherman, and enjoys telling jokes. He is very close with his parents Chris and Mary, younger brother Jordan, and grandma Nancy. He provides medical care to patients of all ages at Scenic Rivers Health Services – Cook Medical Clinic.

Dr. Elleby practices at the Cook Medical clinic.  He also provides emergency department, inpatient, and long-term care services through the Cook Hospital and Care Center.

Erin Thielbar, FNP-C

Erin was born and raised on the Iron Range and loves the area. Starting as a registered nurse in 2005, Erin worked as a floor nurse, and in surgery and clinical informatics. She then received her master’s in Family Nurse Practitioner from the University of North Dakota and is AANP board-certified. Erin is passionate about providing care to the community where she lives. Her goal is to provide safe, quality healthcare and preventative education. In her free time, Erin enjoys being with her two children and spouse at Lake Vermilion for fishing, campfires, and cabin time.

Erin practices at Cook Medical and Tower Medical clinics.

Kiara Westendorf, LGSW

Kiara Westendorf grew up in Duluth, MN, and has recently moved to the Iron Range. She attended the College of St. Benedict for her undergraduate degree in Psychology.  During that time, she worked with a children’s mental health program which taught social, leisure, and relaxation skills to elementary-aged kids. Her passion for helping people inspired her to attend and graduate from the College of St. Scholastica with her Master of Social Work degree. While obtaining her degree requirements, Kiara worked in a community mental health setting with at-risk youth and teens connecting them with and providing therapeutic services. She also has experience working in an adult inpatient mental health unit, an adult partial hospitalization program, and outpatient therapy.  She has a range of experiences working with elementary children, teens, and adults with a variety of mental health needs.

Kiara practices at Cook Medical, Tower Medical, and Eveleth Medical clinics.

Matthew Holmes, MD

Matthew Holmes, MD, grew up in Angora, MN and graduated from Virginia High School in 2004. He moved down to Duluth for his undergraduate degree at the College of St Scholastica as well as medical school at the University of Minnesota Duluth where he graduated in 2011. He completed his residency again in Duluth at the Duluth Family Medicine Center. He thoroughly enjoys northern MN which is why he tried to stay close to home for all of his education and training. He spends most of his free time outdoors hunting, fishing, and snowmobiling.

Dr. Holmes practices at the Cook Medical clinic.  He also provides emergency department, inpatient, and long-term care services through the Cook Hospital and Care Center.

Nicholas Vidor, MD

Nicholas Vidor, MD, grew up in International Falls and graduated from Falls High School in 2000. He attended Rainy River Community College graduating with an Associate of Arts Degree and later attended the University of Minnesota Duluth. After earning undergraduate degrees at UMD in Biochemistry and Molecular Biology and Cell Biology, he attended UMD for a Masters in Chemistry. He readily finished his graduate degree in 2007 and attended UMD Medical School graduating in 2011. He completed his medical training in Duluth at the Duluth Family Medicine Clinic. He started working in medicine as an EMT on the Falls Ambulance Service when attending RRCC. He enjoys living in Northern Minnesota fishing, hunting, and enjoying the outdoors. He is excited to bring quality healthcare to rural Northern Minnesota with interests in Family Medicine and Emergency Medicine. He loves being out on Lake Vermillion chasing the elusive walleye.

Dr. Vidor practices at the Cook Medical clinic. He also provides emergency department, inpatient, and long-term care services through the Cook Hospital and Care Center.

Stephanie Lantry, APRN, CNP

Stephanie Lantry, APRN, CNP grew up in Shakopee Minnesota and graduated form Shakopee Senior High School in 2006. She obtained her Bachelor’s of Arts degree in 2010 from Luther College. She worked as a Registered Nurse for eight years in a variety of rural and urban settings. In 2018 she graduated with a Doctorate of Nursing Practice from The College of St. Scholastica. Stephanie is board certified by the American Academy of Nurse Practitioners. In her free time, Stephanie enjoys reading, cooking, hiking, and spending time outside with her husband and two daughters. As a family nurse practitioner, Stephanie is available for walk-in and urgent care visits.

Stephanie practices at the Cook Medical clinic.