Providers
Dr. James L. “Bo” Johnson II MD, MBA, FACS, DABVLM
Dr. Johnson, founder of the Rocky Mountain Vein Clinic, is a board-certified general surgeon and was the first physician in Montana and Wyoming to become a Diplomate of the American Board of Venous and Lymphatic Medicine. He began performing Endovenous Laser Therapy in 2004, and has successfully performed over 6,000 of these endovenous ablation procedures. Dr. Johnson, a third-generation physician, is known for his dedicated and compassionate care of patients and for his medical professionalism. He is a Diplomate of the American Board of Surgery, Fellow of the American College of Surgeons, and a Diplomate of the American Board of Phlebology. Dr. Johnson believes strongly in giving back and dedicates two weeks out of each year to travel to third-world countries to provide a full range of medical care. To learn more about his latest venture with Amiga de Salud, where he traveled with his kids to Ecuador, please read the press release. Dr. Johnson and his wife Deborah, a pharmacist, have four children and reside in Cody, Wyoming.
Dr. Rodney Sirk, MD, RVT, RPHS
Dr. Rodney Sirk was born and raised in West Virginia. Dr. Sirk joined the US Air Force after high school and spent seven years as an enlisted Airman and served as an Aeromedical Evacuation Specialist in Operation Desert Storm. After his honorable discharge in 1991, he attended Marshall University’s School of Medicine in Huntington, West Virginia. After graduation he completed his residency in Family Medicine at Marshall University. He spent the first 10 years of his career working in a hospital setting and offering general medical care. In 2010, Dr. Sirk began his vein care journey and focused solely on phlebology and the treatment of vein disease. Dr. Sirk is a Diplomate of the American Board of Venous and Lymphatic Medicine as well as a member of the American Venous Forum. He also specializes in ultrasound imaging as a Registered Vascular Technologist and a Registered Phlebology Sonographer. As a father of 3 and an avid outdoorsman, Dr. Sirk’s relocation to Great Falls in 2021 has provided an incredible opportunity to enjoy the beauty Montana has to offer as well as make a difference in the lives of Montana patients.
Dr. Michael Orcutt, MD, DABVLM, FACS
Dr. Michael Orcutt is a native Montanan raised on the family farm east of Conrad. He graduated from the University of Washington School of Medicine in 1979, proceeded on with surgical training at the University of Texas San Antonio, and performed his vascular surgery fellowship in Pennsylvania, returning to Northcentral Montana in the mid-’80s. Dr. Orcutt is a Diplomate of the American Board of Venous and Lymphatic Medicine as well as a Fellow of American College of Surgeons. Dr. Orcutt and his wife Lisa live in Great Falls with their two labrador retrievers and love to hunt, fish, camp, and travel.
Billings Office Staff
Teresa Schlicting, Practice Manager
Teresa Schlicting brings a strong commitment to patient care and community service to her role as Practice Manager for Billings & Cody at Rocky Mountain Vein Clinic. With more than 15 years of management experience and a Bachelor of Science in Healthcare Administration, she is dedicated to ensuring patients receive compassionate, high-quality care in a welcoming and supportive environment. A lifelong member of the Billings community for over 40 years, Teresa is proud to serve the region and help patients feel comfortable and confident throughout their care journey. When she is not at the clinic, she enjoys spending time with her family as a wife, mother of three, and grandmother of three.
Amber Zito, PA-C, Physician Assistant
Originally hailing from Nebraska, Amber embarked on a transformative journey to Billings in 2001. Her academic schooling began at Rocky Mountain College, where she pursued a degree in Biology. Amber returned to Rocky Mountain College to complete the Master of Physician Assistant Program, emerging as a graduate in 2008. Her career journey then led her to initially specializing in Occupational Medicine, however, her true calling was found in Cardiology, and she dedicated her expertise to the field of Electrophysiology. Driven to continue her education, she made the decision to pursue an advanced degree, culminating in the attainment of the Doctor of Medical Sciences from Rocky Mountain College in 2022. Amber is a true outdoors’ girl, indulging in activities such as camping, hiking, backpacking, and rafting. She’s an avid traveler, forever captivated by the beauty and diversity of our world. Yet above all, her heart belongs to her cherished family, including husband Nathan, and their loving children: Aden, Heather, Aubrey, Summer, and Garrett. Amber’s goal in life is to make a meaningful difference in the lives of others, one moment at a time.
Cady David, PA-C, Physician Assistant
Raised on the Hi-Line in Kremlin, MT, Cady David has cultivated a passion for healthcare that stems from her rural roots. She earned her undergraduate degree in Biology from Montana State University in Bozeman, followed by a Master’s in Physician Assistant Studies from Rocky Mountain College in Billings, MT, in 2019.
Cady’s career as a Physician Assistant began in urology, where she developed expertise in robotic surgery while gaining valuable experience in hospital, emergency, and clinical medicine settings. She felt drawn to a career change upon discovering the Rocky Mountain Vein Clinic, whose patient care philosophies closely align with her own. Cady believes in the power of preventive care, health maintenance, and patient education, aiming to deliver first-rate care and unwavering support to her patients. “I feel privileged to play a pivotal role in healthcare and outcomes. My commitment is to go the extra mile, ensuring every individual feels valued and cared for.”
Outside of her professional life, Cady enjoys quality time with her energetic daughter, husband, and their beloved corgi. She loves exploring the outdoors through hiking and fishing, as well as savoring live music and creating memories with friends and family.
Tana Willems, Medical Assistant
Tana is a native of West Yellowstone, MT. She attended school at Northwestern College in Powell, WY and MSU-Billings. She has worked in the medical field for over 10 years before joining RMVC in March of 2012. In her spare time Tana enjoys reading, baking, playing volleyball, and spending time with her family and friends.
Shana Weiss, Medical Assistant
Shana is a native of Muskegon, Michigan where she graduated from Ross Medical Education Center as a Medical Assistant in 2010. She moved to Cody shortly after and joined our team. Shana is a Certified Laser Specialist and also assists Dr. Johnson with Endovenous Laser Therapy and Radiofrequency Ablation. Her hobbies include hiking, photographing wildlife, and spending time with her husband, family, and friends.
Mandia Younger, Medical Assistant
Mandia is originally from Virginia and moved to Billings in 2022. Her healthcare career began in 2001 when she became a Certified Phlebotomist, followed by earning her Certified Medical Assistant credential in 2016. Outside of work, Mandia loves spending time with her daughter and their dog, Umi. Together, they enjoy road trips, visiting zoos and museums, and working toward her daughter’s goal of visiting every state capital. Mandia also enjoys reading, writing poetry, music, traveling, and learning about different cultures. A lover of lions—but definitely not cats—Mandia appreciates life’s simple pleasures. One day, she dreams of retiring to Nicaragua, where she hopes to immerse herself in the local culture and enjoy a slower, simpler way of life.
Carol Cunningham, Medical Billing Director
An Arizona native, Carol attended Glendale Community College and received an Associate Degree in General Business. In 1981, she and her husband relocated to Billings, Montana. Carol brings over 30-years of experience in insurance and patient billing. She joined the RMVC team in October of 2015. In her spare time, Carol enjoys snowmobiling, four-wheeling, gardening, and attending both Bronco and Avalanche games in Denver, Colorado.
Melanie Tolman, Office Coordinator
Melanie was born in Dickinson North Dakota. She moved to Billings when she was 8. She attended MSU-B. She has been in the medical field for over 20 plus years working as a receptionist/secretary. She is married with two boys and entourage of animals. Melanie enjoys helping her husband with his business, remodeling her house, arts and crafts of many varieties, camping, fishing and the company of her friends and family.
Cody Office Staff
Jennifer Williams, Physician Assistant
Jennifer graduated from Hastings College in Hastings, Nebraska, with a B.A. in mathematics and biology. She then attended Baylor College of Medicine in Houston, Texas, where she was Valedictorian of her Physician Assistant class. Having grown up in an Air Force family, Jennifer was born in Montana, raised in Nebraska, and feels most at home in the West.
Jennifer has lived and practiced medicine as a Physician Assistant in Cody since 1999. Prior to joining Rocky Mountain Vein Clinic in 2012, she worked alongside Dr. Steve Mainini at Billings Clinic – Cody. Her long-standing commitment to patient care and the Cody community reflects both her experience and her heart for service.
Jennifer and her husband, Cris, have raised their family in Cody and cherish the small-town lifestyle it offers. Cris is a chemistry teacher at Cody High School and also serves as a football and track coach, coaching offensive line and shot put/discus. Jennifer is the proud mother of three young adults—two sons and a daughter—and has recently welcomed a daughter-in-law into the family.
Outside of the clinic, Jennifer and Cris are marriage mentors for their church. In her free time, she enjoys hiking, reading, and spending time with her two dogs.
Deborah Johnson, Pharm D, Clinical Specialist
Deborah graduated from Creighton University in 1992 with a Pharm.D. She has practiced in a variety of settings, including Retail Pharmacy and Hospital Pharmacy, and as a Clinical Pharmacist on the Renal Transplant Team at the University of Wisconsin. Most recently, she was an Adjunct Professor/Clinical Consultant at the University of Oklahoma College of Pharmacy. Deborah was involved in the establishment of Rocky Mountain Vein Clinic and is involved in patient care. Much of her time is spent raising four children.
Shana Bunn, Medical Assistant
Originally from Washington State, Shana married her high school sweetheart of over 30 years and is a proud mother of three daughters and a grandmother (Nana) to three grandchildren. With over 24 years of experience in the medical field, she brings a wealth of knowledge and dedication to her profession.
In 2007, she earned an Associate degree in Business Administration from Northwest College in Powell, WY, followed by a Bachelor’s degree in Health Administration from Montana State University Billings in 2009. Her hobbies include camping, gardening, crocheting, soap making, photography, and spending quality time with family, friends, and her beloved pets.
Michelle Lemmon, Office Manager
Biography coming soon
Great Falls Office Staff
Janelle Bowden, Nurse Practitioner
Janelle was born and raised in Cut Bank, Montana. She earned her first bachelor’s degree in Exercise Science from Montana State University in 2010 and then moved to Utah to work as a physical therapy aid while her husband attended school. Her love for Montana brought her and her husband back to Bozeman in 2012. She returned to school in 2015 attending Montana State University’s accelerated nursing program, earning her Nursing degree in 2016. She then worked as a public health nurse for the Park County Health Department in Livingston, Montana for 4 years while simultaneously attending Nurse Practitioner school at MSU. She earned her Doctor of Nursing practice degree and became board certified in 2020. Before joining Rocky Mountain Vein Clinic, Janelle worked at Alluvion Health’s school-based health center in Great Falls practicing family medicine. Janelle’s hobbies include four-wheeling with her husband and daughter, running or walking with her dog, going on vacations, watching Disney movies, and serving in her church.
Jennifer Bossie, Medical Assistant
Jennifer is a certified medical assistant (CMA, AAMA) and a certified phlebotomy technician with a strong passion for patient care. Born and raised in Great Falls, she balances her professional life with being a proud mom to two boys, ages 11 and 9. Jennifer also serves as Cub Master for Pack 1, leading with enthusiasm and heart. In her free time, she enjoys reading, playing games with her family, camping under the stars, and tending to her garden.
Stephanie Fogleman, Medical Assistant
Stephanie has 24 years of experience as a Certified Medical Assistant and 9 years as a preschool teacher supporting military families. With a background working across multiple areas of the medical field, patient care has always been her true passion. Originally from South Louisiana and a graduate of Woodlawn High School in Baton Rouge, she attended college in Colorado Springs before building a life in Montana. Stephanie is recently married and proud to be a wife, mother, and “Granny” to three granddaughters in Great Falls. She loves spending time with her family, spoiling her grandchildren, staying active at the gym with her husband, and enjoying Montana’s outdoors—especially in the summer.
Nikki Garbarino, Practice Manager
Nikki is a CCMA and CMAA with over 20 years of healthcare experience across multiple clinical specialties. A former University Program Director of Medical Assisting, she is passionate about serving her community and supporting the next generation of healthcare professionals. Outside of work, Nikki is a devoted dog lover with two pups and enjoys everything Montana and the outdoors have to offer.
Kendal Diedrich, Office Coordinator
Kendall was born and raised in Great Falls, Montana, and has had the opportunity to live in Italy, Washington State, and California—experiences that have shaped a strong appreciation for diverse cultures and perspectives. Kendall is a certified phlebotomist through Great Falls College MSU and a proud alum of the University of Providence. With a passion for helping others, Kendall strives to make a positive impact in both personal and professional settings. Outside of work, Kendall enjoys the outdoors, sports, and traveling, and spends most of his free time with his wonderful family.
Ultrasound Associates
Michelle Dillon, RVT RDMS RDCS RT(R)
Michelle is a native of Billings. She attended ultrasound school in Colorado Springs, Colorado. She has been registered in ultrasound since 1991 and holds registries in Vascular Ultrasound, Adult Echocardiography, Abdomen, and OB/Gyn. She lives in Billings with her husband Jerry and their four boys. Michelle is the owner of Big Sky Ultrasound LLC, which specializes in vascular ultrasound screening and provides all the ultrasound services for Rocky Mountain Vein Clinic in both Montana and Wyoming.
Jona Brown, Ultrasound Technologist
Jona was born and raised in Great Falls. She is a mother of two and grandmother to three beautiful girls. She has worked in medical field for the past seven years as a scheduler. Wanting to do more in medical field, she finished CNA classes and did some home health care. She likes to watch and play all sports but loves spending most of her time with her children and granddaughters.
Amber Rittal - BSRT(R) M CT, RDCS
Amber was born and raised in eastern Montana. She earned a Bachelor of Science degree in Radiologic Technology from Minot State University and has worked in healthcare since 1995 as a radiologic technologist and sonographer. She started with Big Sky Ultrasound and Rocky Mountain Vein Clinic in 2011. Amber enjoys spending time with her family at their cabin near Flathead Lake, hiking in Glacier Park, skiing, boating, reading, and antique shopping.
Abby Craig, RVT
Abby was raised in Cottonwood, Arizona. She obtained a B.S. in Athletic Training from Ball State University in Muncie, Indiana and an A.S. in Cardiovascular Technology for Vascular Ultrasound from Grossmont College in San Diego, California. From 2008-2016 Abby worked at Banner Bosewell Medical Center in Sun City, Arizona as a Registered Vascular Ultrasound Technologist. She joined Rocky Mountain Vein Clinic in 2016. Abby enjoys reading, photography, hiking, learning to play the violin, exploring the world through travel and spending quality time with her family and friends.
Melody Lee, RVT
Melody is a registered vascular technician at Big Sky Ultrasound, she joined the team in the beginning of 2020. She attended Spokane Community College for an associate in Applied Science-Vascular Technology and moved to Billings Montana in 2019. Outside of work, she enjoys hiking public trailheads or fishing the Yellowstone river. She is also passionate about helping animals.
Katie Fergen, RVT
Katie was born and raised in South Dakota and graduated from Southeast Tech in Sioux Falls with an Associate Degree in 2008. She’s married to a Montana native, is mother to 3 amazing kids, and currently lives in Great Falls. When not taking excellent care of her patients, Katie loves Montana summers on the boat, shopping, and sampling amazing restaurant fare.
Delaney Linhardt
Delaney joined Big Sky Ultrasound in 2026 after graduating from Montana State University Billings. She enjoys being part of the team and connecting with the people she meets each day. Outside of work, Delaney loves spending quality time with her family and friends. In her free time, you can often find her relaxing with a good book.
