About Us

Our team

Emergency Medicine

Cascade Medical Associates has been providing emergency medicine care at McKenzie Willamette Medical Center for over 40 years. Started by Dr. Dick Abraham and the late Dr. John Mackey, the group of 20 providers continue to provide exemplary and compassionate emergency care for our community today. The 39 bed emergency department, level 3 trauma center is staffed with board certified emergency physicians 24 hours a day. We are dedicated to state-of-the-art evidence based care and making sure patients feel valued and get the prompt care they need.


Brian T Hoyt

Brian T Hoyt, MD FACEP is a board certified emergency physician who grew
up in Eugene. He trained at OHSU in Portland, Oregon and after living and
working in Longview, WA for 15 years, moved back to Lane County in 2014
where he has enjoyed reconnecting with old friends and joining the team of excellent doctors and providers at McKenzie Willamette Medical Center. Dr. Hoyt has been involved in leadership as medical director of the emergency
department and on the medical staff at the hospital. He has been a physician
advisor for EMS agencies and is on the Area Trauma Advisory Board for region 3 of the State of Oregon. Dr. Hoyt enjoys meeting people where they are, getting to know each patient, something special about them, really listening to their concerns and doing his best to help them with what they need. When not working, Dr. Hoyt enjoys spending time with his wife and kids, working in the garden around the house, fishing, bird hunting and golf with his father and friends.


Keith Best

Keith Best was born and raised in Eugene, OR. He attended Sheldon High School and Graduated from the University of Oregon with a Bachelor of Science in Human Physiology. He worked as a Cardiovascular Tech at RiverBend before starting PA school at Heritage University on Toppenish, WA. The first PA position Keith worked was at Eugene Urgent Care and is now known as BestMed Urgent Care. He has been working with CMA since 2021.

What Keith loves most about medicine is that he is given the opportunity to guide patients through some of the most vulnerable and emotional points in their lives. Orthopedics and Cardiovascular medicine are his favorite sub-specialties in Emergency Medicine. Keith has a lifelong love and background rooted in athletics and physical activity. Some of his favorite hobbies include working out, hiking, camping, backpacking, off road motocamping adventures, paddle boarding, among others He loves exploring new physical activities and is always up for an adventure. Keith loves food and is fascinated by all aspects of the culinary arts especially eating delicious food and trying new restaurants. He considers himself grateful to be apart of CMA and has so much admiration and respect for all of the providers that he gets to work with on a daily basis.


Margaret Jacobson

Maggie Jacobson grew up in Minnetonka, Minnesota, the youngest of four siblings. As a Minnesotan, ice skating is a right of passage, so she learned to skate when she
learned to walk. She did her undergrad at University of Portland. She completed her PA at A.T. Still University in Mesa, AZ. Prior to school she was an ER scribe in Portland for 2 years and then was an ER tech in Mount Vernon, WA. Maggie finds medicine interesting and loves constantly learning. Maggie is very interested in the pediatric population as well as pharmacology. The kidneys are her favorite organ. Maggie loves playing sports from pickleball to tennis, football, running, skiing, snowboarding and hiking with her dog. She also enjoys cooking and painting.


Mark Brauner

Mark E Brauner, D.O., FACEP is from the Midwest. He graduated from Indiana University in his hometown of Bloomington, Indiana. He then completed medical school at Ohio University and his emergency medicine residency at The Ohio State University. Mark has intensively studied and has been an academic and entrepreneur in the field of resuscitation from cardiac arrest. He has traveled extensively and has taught emergency medicine internationally. Mark listens to his patients and tries very hard to make a positive impact on every patient that he sees. He enjoys outdoor activities, landscaping, theater and cooking food from around the world.


Celia Cheung

Celia Cheung, MD is a South Carolina native and was trained in Emergency Medicine at Medical University of South Carolina. She has worked in South Carolina and Oregon and has been with Cascade Medical Associates since 2015. She is also the recipient of the Arnold P Gold Award for Humanism in Medicine while in medical school. Dr. Cheung loves working in all areas related to emergency medicine but is especially interested in learning new procedural techniques and taking care of all folks in all stages of life. When she isn’t working she enjoys traveling, spending time with family and friends and outdoor activities.


Josiah Dick

Josiah Dick, PA-C is originally from Vermont and received his Master of Science in Physician Assistant Studies at Franklin College, Indiana. He joined CMA as a new graduate in 2022 and has been thrilled to work with the group for the past year. He spent 8 years in the Army and currently drills with the National Guard as a PA. Josiah loves the constant variety medicine offers and the opportunity it allows to be a constant life-long learner. When not working he enjoys spending time outside with his family and camping on the coast.


Gary Josephsen

Gary Josephsen, MD, is a Eugene native trained in emergency medicine at Harbor-UCLA Medical Center. He is the recipient of the Arnold P. Gold Award for Humanism in Medicine, a peer award honoring compassionate care, and the award for outstanding clinical teaching from Oregon Health Sciences University. Dr. “Gary” is passionate about all areas of medicine, particularly kids, babies, and young adults. When he’s not working, he enjoys relaxing outside with his family and friends, taking advantage of all that beautiful Oregon offers.


Kelly Josephsen

Kelly Josephsen grew up in Elmira, OR and went to University of Oregon for her undergraduate education. She trained at USC and her first job was at California Hospital. She has now been with CMA since 2009.

Kelly enjoys that emergency medicine is fast paced, variable and holds providers to a higher standard of care. She feels privileged to help others in their most vulnerable state.

In her free time, she is out climbing, skiing or surfing on a good day. She tries to keep up with her two sons and enjoys reading, drawing and practicing her bass guitar when the weather does not allow her to be outside.


Julie Kim

Dr. Julie Kim obtained her medical degree at Loma Linda University School of Medicine in southern California where the focus was compassionate care of the whole person and then her emergency medicine training at Henry Ford Hospital in Detroit, Michigan, with special focus in sepsis treatment under Dr. Emmanuel Rivers.

She enjoys making each patient feel heard and respected and ensuring that patients understand the care they were given and keeping them informed throughout their stay.

Outside of work, she enjoys listening to live music, reading, learning languages and traveling.


Harry Kleiner

Harry Kleiner, DO is from Milwaukee Wisconsin and has lived in several midwestern cities. For 25 years he has worked in emergency medicine, 10 of which he serves as an ER Medical Director. In 2008 he moved from Kansas City to Eugene and has been working with Cascade Medical Associates ever since.

Dr Kleiner went to college at University of Wisconsin, Medical School at Des Moines University, and his Emergency Medicine residency at Mount Clemens General Hospital. For 10 years, while living in Kansas City, Dr Kleiner worked at Research Medical Center which is an urban trauma center.

Dr Kleiner enjoys working as a team with all of the departments and individuals that comprise the Emergency Department. His hobbies include hiking, skiing, mountain biking, white water rafting and sailing.


Jackie Loutzenheiser

Jackie Loutzenheiser is a board-certified physician assistant from Boise, Idaho. She received her Bachelor of Science in Kinesiology from Boise State University and went on to complete her Master of Medical Science in Physician Assistant Studies at Midwestern University in Glendale, Arizona. She is new to Cascade Medical Associates’ Emergency Medicine team as of summer 2023!
Jackie is passionate about providing empathetic and diligent care to each of her patients in the emergency medical setting. She enjoys the process of making a medical diagnosis and recognizes the importance of initiating appropriate and timely treatment. When Jackie isn’t practicing medicine, you can find her out skiing, mountain biking, or on the trails running with her yellow lab, Jackson.


Jamie Mehl

Jamie Mehl, PA is a board certified PA practicing in Emergency Medicine since 2017. She is an Oregonian, and trained at Oregon Health & Science University. She enjoys Emergency Medicine for its fast paced setting, and being involved in patient’s lives at a critical time. In her free time she is exploring Oregon, spending time with family, hiking, and volunteering on medical missions.


Leif Meyers

Leif Meyers, MD, is a Eugene native trained in emergency medicine at Michigan State University College of Human Medicine. He began working at Cascade Medical Associates in 2010. When he’s not in the emergency room you can find him bike riding, rockhounding, and adventuring around Oregon with his wife and 5 kids.


Ryan Powell

Ryan Powell was born and raised in Eugene Orgon. He went to college at Oregon State University before going to medical school at the Western University College of Osteopathic Medicine in Lebanon, Oregon He did his emergency medicine residency at the University of Michigan Health-West

Ryan is excited to be back in Oregon with his wife who is a family medicine provider. Ryan started with CMA in 2023 as is excited for his next steps. He enjoys taking time to educate his patients and empower them whenever able.

When he is not at work Ryan enjoys spending time with his family, learning more about history and exploring outside as much as possible.


Marc Schnapper

Marc Schnapper was born in New Jersey, but moved to California in elementary school. He received his undergraduate degree from UCSD, completed his Medical School at St. Louis University and did his residency at Ohio State University. Marc moved to Eugene in 2000 to join CMA and hasn’t looked back, spending his entire career at MWMC. Marc’s wife is an OB/GYN at Women’s Care and they have two girls. They enjoy living the in the Pacific Northwest spending time with their girls who are now in graduate school. With spare time, he enjoys road cycling, cross country skiing, and hiking.


Kevin Schoen

Kevin Schoen, DO, is from Green Bay, Wisconsin and trained in emergency medicine at Eastern Virginia Medical School, where he was nominated as chief resident. He moved to Eugene in 2019 to become a member of Cascade Medical Associates. He truly enjoys direct patient care and getting to know his patients and has a particular interest in orthopedic injuries. Outside of work he likes to travel, hike, mountain bike, and spend time with family and friends.


William Sherman

William Sherman, PA-C is a board-certified physician assistant practicing emergency medicine at Mckenzie Willamette Medical Center. He was born and raised in Ellicott City, Maryland, and attended the University of Colorado Boulder where he received a Bachelor of Arts in Neuroscience. Prior to attending physician assistant school, he worked as an EMT in Boulder Colorado. He then went on to earn a Master of Physician Assistant Studies from Lincoln Memorial University in Knoxville, TN with ED experience in Portland, OR, and Cleveland, OH. William is a new member of the team with CMA as of May 2023 and is excited to provide emergency care to the local community. William has always had a strong interest in emergency medicine since working as an EMT and has additional interests in wilderness medicine. His favorite part of his practice is the teamwork element between providers, nurses, techs, ems, and staff which is critical to practicing emergency medicine.

In his free time, William likes to adventure outdoors with his fiance backcountry skiing, mountain biking, and whitewater kayaking.


Eric Spencer

Eric Spencer is a native Oregonian from Tillamook. He graduated from Portland State University with a BS in Mathematics and General Science in 1993. He attended medical school at OHSU from 1994-1998 and completed a three-year Emergency Medicine residency program at Albany Medical Center in Albany New York. His third year of residency was serving as the Chief resident. He worked in Northern California at a regional trauma center from 2001-2004 and then found his way back home to CMA and has been here ever since January 2004.

Eric is a big Oregon Ducks sports fan and spends his free time hiking, biking kayaking on the McKenzie River, running, attending Duck basketball games and occasionally he finds time for golfing. He is particularly fond of family vacation time in Sunriver. Eric’s favorite thing to do, however, is travel with his wife. They love warm oceans, white sand beaches, waterfall hikes and coconut palms, but try to get off the beaten path. They also love traveling to our National Parks.


Keith Sumey

Keith Sumey, MD is a native of Tacoma, WA and trained in Emergency Medicine at Michigan State University in Grand Rapids. He served 9 years as a flight physician and emergency physician in the U.S. Army. Practicing emergency medicine gives Dr. Sumey great satisfaction, knowing how profoundly he can help his patients. He loves the science of medicine and the relational aspect of interacting with patients. Outside of medicine he enjoys sports, bird hunting with his dog, reading and history. Most of all he enjoys time with his wife and kids!


Benjamin Verbil

Benjamin Verbil NP, “Ben”, is a new arrival to the Eugene/Springfield area with his primary advanced practice nursing training from Washington State University and post-graduate emergency medicine training in Albany, NY. He has been with McKenzie-Willamette Medical Center since October 2022 in a Critical Care nocturnist role and recently began working in the emergency department with CMA in April 2023. Ben’s primary interests are in critical care and emergency medicine, and his favorite part of practicing are the plentiful collaborative learning opportunities that come with interacting across multiple medical specialties. Outside of work, Ben enjoys spending time with his partner Katie, Dave the grumbly dog, whitewater rafting, cycling, and working on house projects.


Peter Nauss

Peter Nauss is a board-certified Physician Assistant licensed in the state of Oregon. He is from a rural town in Southwest Virginia and has six siblings. He works for Cascade Medical Associates at McKenzie-Willamette Emergency department. Prior to employment Mr. Nauss attended Lincoln Memorial University’s Physician Assistant program. He spends his leisure time outdoors snowboarding, mountain biking or white-water kayaking.


Jonathan Wright

Jonathan Wright is an Oregon native who graduated from the College of Osteopathic Medicine of the Pacific Northwest in Lebanon, Oregon, in 2016. Following completion of his residency at Norman Regional Hospital in Norman, Oklahoma, Jonathan and his family returned to Oregon where he began working in the emergency department at McKenzie-Willamette.

“What do I like about working in the emergency department? There’s nothing quite like being the one to help someone in a bind. I’ve been the one who has needed that help, and what a pleasure it is to be the one to extend it.”

“What do I do when I’m not working? In our family we’re community people. I coach our kids in their sports, our family helps at the Eugene Mission, my wife and I volunteer with the Refugee Resettlement Coalition of Lane County, and we’ve supported 15th Night with various projects. We also endeavor to thoroughly enjoy the beautiful region we live in. We hike, camp, and otherwise try to visit as much of the area as we can.”


Morgan Ricci

Morgan Ricci grew up in Henderson, Nevada and attended University of Nevada, Reno for her undergraduate education. Following this she went to medical school in Lebanon, OR at Western University of Health Sciences. She completed her emergency medicine residency in Peoria, Illinois where she served as chief resident her third year. She has always loved Oregon and returned following residency in 2022 and has also worked in Southern Oregon.
Morgan’s interest in emergency medicine is due to the constant learning, variety and the chance to make a profound difference in patients’ lives. 
Outside of the hospital Morgan enjoys hiking, gardening, cooking, travel and spending time with family, friends, and her pets (Draco and Juniper).  


Kate Gardner

Kate Gardner is from Bradenton, Florida. She completed her undergraduate education at the University of Central Florida before going to Medical School at PCOM – Georgia Campus. Dr Gardner completed her residency training at Norman Regional in Norman, OK. After residency, she stayed on at Norman Regional as a clinical faculty. Dr Gardner has enjoyed being part of the residency and the opportunity to teach. Additionally, she served as an associate medical director for their EMS service for one year and was part of their bike team which was deployed for mass gathering events (football games, concerts, etc.). Outside of work she enjoys snowboarding, mountain biking, hiking and has recently started overlanding.


Andrew Lewis

Andrew Lewis, PA-C is a board-certified physician assistant and is a new member of the team with CMA as of June 2024. A native Oregonian, he received his Bachelor of Science from Oregon State University while he simultaneously volunteered as an EMT/firefighter. Prior to attending physician assistant school, he was an Emergency Room Technician in Portland, OR. He earned his Master of Physician Assistant Studies from the University of Pittsburgh. In addition to his training in emergency medicine, Andrew has always had a strong interest in wilderness medicine. His favorite part of his practice is providing empathetic care to each of his patients during a critical time in their lives. In his free time Andrew enjoys attending Beaver sporting events, skiing, and mountaineering.

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