Department of Neurology

Meet Our Residents

A collage of images containing people, outdoors, studying

Sabrena Ahmadi, D.O. was born and raised in the Bay Area of Northern California, where she was immersed in her parents' rich Afghan culture. She completed her bachelor's degree in neuroscience at the University of California, Los Angeles. During this time, she worked as an EMT on weekends and conducted research on aminergic signaling pathways in Drosophila malanogaster. Following her undergraduate studies, Sabrena spent a year working as a worker's compensation coordinator at a pain management clinic in Walnut Creek. She then went on to attend medical school at AT Still University in Arizona, completing the Oregon tract. Sabrena is thrilled to be staying here in Portland for residency, as she is a huge Portland Timbers fan.

Tae Yeon Kim, M.D. was born in South Korea but was primarily raised in Honolulu, Hawaii, where she grew up loving music. Over the course of her childhood, she learned how to play five different instruments and was in symphony orchestra, concert band, and marching band. She attended Johns Hopkins University, where she studied biology and psychology. After graduating in 2012, she worked as an intern for the American Red Cross, connecting with community organizations to help immigrants and refugees. Tae Yeon was accepted to medical school at the University of Iowa in 2014, where she quickly developed a passion for teaching. She was honored to be involved in various aspects of curriculum development, tutoring, and community outreach. She was beyond thrilled to learn that she would be continuing her medical education at OHSU and is excited to have easy access to Portland's famous food scene. When not in the hospital, she enjoys eating ice cream, cooking, art, and spending time with friends. She has the companionship of her two very fluffy cats and will be in closer proximity to her sister, who works as a pharmacist in California.

Stacia Lam, M.D. grew up in a small rural west coast community in St. Elizabeth, Jamaica. Inspired by the physicians in the area and how cherished their services were to the underserved, she knew at an early age that she wanted to be a physician. At the age of 18, she bade her family goodbye and moved to the United States to pursue this calling. She completed her degree in biology (with a chemistry minor) at Howard University in Washington, D.C. and started medical school there soon after. While living in DC, she met and married her loving husband, Clayton. Life and unique circumstances, however, brought her to the west coast where she completed her medical education at Loma Linda University in southern California. Being an immigrant and military spouse has afforded Stacia the privilege of residing in almost every region of the U.S., including the South, the Northeast, the "Mountain West" (Colorado), the Northwest, and the Southwest. She has volunteered at local hospitals and free clinics in almost all of these locations. Most recently, she was an active member of the "SUPER stroke" group at Loma Linda, which serves to educate members of the surrounding communities about the signs and symptoms of stroke and how to respond. She enjoys being outdoors, playing the guitar, and spending quality time with her husband and cats, Twibby and Mikey. Stacia adores the Northwest and is happy for the opportunity to complete her medical training at OHSU!

Rachel Laursen, M.D. was born and raised in the Pacific Northwest. She graduated from the University of Oregon Robert D. Clark Honors College with Departmental Honors in Biology. During her time at U of O, she worked for the UO Student Orientation Department and the UO Department of Neuroscience. Rachel was a member of the Janis C. Weeks Laboratory, which received grants from the NIH and Bill and Melinda Gates Foundation to conduct highthroughput screening of pharmaceutical compounds using novel microfluidic and electrophysiological techniques. After graduation, Rachel returned to Portland where she spent several months building homes for Habitat for Humanity before starting medical school at OHSU. At OHSU, she was involved in ultrasound education, clinical research, and provided primary care services at the Southwest Community Health Center. In her free time, Rachel enjoys running, hiking/backpacking, rock climbing, downhill skiing, visiting National Parks, playing soccer, Latin ballroom dancing, and spending time with family and friends.

Lindsey Carvalho, M.D.
Lindsey was born and raised in Mililani on O’ahu, Hawaii. She moved to the Pacific NW after high school and attended Seattle University.  She was the first biology major to be a part of the professional business fraternity Alpha Kappa Psi, where she was the Director of Community Service. During her undergraduate years, she spent her summer vacations volunteering at care homes and playing bingo and blackjack with the care home residents. She was thrilled to return to Hawaii for medical school at the University of Hawaii, where she developed a passion for medical education.  She credits her passion for medicine to her amazing mentors in the fields of Neurology and Neurocritical Care. Outside of medicine, Lindsey loves reading, swimming, finding new restaurants to try, and snuggling with cats. She is excited to return to the Pacific NW and to call Portland her new home.

Stephan Castro, M.D.
Stephen was born and raised in the San Francisco Bay Area. During his undergraduate career at Pitzer College, Stephan participated in the varsity basketball team for 2 years while also participating in research projects at Casa Colina Rehabilitation Center and Duke University. One project that garnered his interest in the medical field was working with patients undergoing treatment for Traumatic Brain Injury or stroke and experiencing the dramatically positive effect of patient education. Furthering those interests at Lewis Katz School of Medicine at Temple University, Stephan volunteered in working with children and local adults of the North Philadelphia area to educate patients about healthy habits. Outside of medicine, he enjoys playing basketball, hot yoga, biking, and cooking.

Audrey Oliger, M.D.
Audrey Oliger grew up in Indiana. She graduated from Indiana University where she majored in biology, minored in Spanish, and obtained an honors certificate through the Liberal Arts and Management Program. She became interested in medicine while volunteering as an EMT and finance director for IC-EMS, a group of students providing first aid and BLS services for campus events, most notably "Little 500" cycling practices and races. She attended Indiana University School of Medicine at the West Lafayette and Indianapolis campuses. She remained in Indianapolis for internship through the Methodist Transitional Year program before starting neurology residency at OHSU.

William Shimanek, M.D.
William was born and raised in Enid, Oklahoma.  He completed his undergraduate studies in Biology at the University of Tulsa and his medical training at the University of Oklahoma.  While in medical school, Will enjoyed volunteering to serve those with limited access to the medical system and participating in Neurology research.  He is an avid birdwatcher, home chef, and amateur musician. While in Portland, Will plans to enjoy hiking among the wonderful scenery and wildlife, as well as exploring the robust food culture with his wife Sara, also a resident at OHSU.

Huan Vo, M.D.
Huan was born in Ho Chi Minh City Vietnam and immigrated to the United States at 14 years old. He grew up in Auburn, Washington then attended the University of Washington for undergrad where he studied Biochemistry. As an undergrad, he frequently went back to Vietnam to volunteer in medical clinics. After graduation, he worked in a biochemistry lab at the UW for one year to research the reductive carboxylation pathway in the retinal pigment epithelium. During his time in the PNW, he developed a love for the outdoors and hiking. He then left the PNW and went to Drexel University – Kaiser Campus in Philadelphia and Sacramento for medical school. In medical school, he enjoyed neuroanatomy and had a great time in his neurology clerkship. He realized that he wants a career in neurology and did research in sleep and epilepsy. He is very excited to come back to the PNW where he will spend his free time hiking, camping, and enjoying the mountains with his wife Alice.

Allison Dycaico, M.D.
Allison Dycaico was born and raised in Davis, California, a university town known for biking and agriculture. She graduated from UC Davis with a degree in Biology and a minor in Professional Writing. After working as an ER scribe for 2 years, she then moved to Detroit to complete her medical education at Wayne State University. Her time in the neurology subspecialty clinic was a highlight of med school and solidified her decision to go into Neurology. She has specific interests in Functional Neurological Disorders and in Medical Education.
In her spare time, she enjoys Sci Fi / Fantasy, true crime podcasts, farmers markets, thrift stores, hiking, cooking, and climbing. And of course, she loves hanging out with her two cats, Kitten Bee and Lil One. Allison is thrilled to return to the West Coast to be closer to family and friends. She looks forward to exploring Portland’s natural beauty.

Matt Creech, D.O.
Matthew Creech is an Oregon native who grew up in a small town on the eastern side of the state where he enjoyed hiking, climbing and snowboarding, along with other outdoor activities. He attended a liberal arts college near Portland where he studied biology and worked in a marine ecology lab studying the microbome of sea sponges off the Oregon Coast. After graduating, he worked at OHSU in the department of biomedical engineering where he published his first article on using super-resolution microscopy to image breast cancer tissues. He traded rain for sun when he moved down to South Florida where his partner, Lindsay, was starting dental school. Before he started medical school, Matt was a founding member of new genetics lab at the University of Miami, studying hereditary thyroid disorders and dyshormonogenesis. Matt attended Nova Southeastern University in Fort Lauderdale Florida for medical school where he also completed his Master of Public Health degree. In his spare time, he enjoys sea kayaking, SCUBA diving, hiking, cooking and playing guitar. Both Matt and Lindsay are extremely excited to return home to the Pacific NW to continue their medical careers.

Ben Rardin, M.D.
Ben is a native of Asheville, a city located in the mountains of Western North Carolina. He completed his undergraduate studies in Mathematics at UNC Chapel Hill and spent two years conducting research in Autism Spectrum Disorders prior to attending medical school at the Wake Forest School of Medicine. During medical school, Ben was heavily involved in his school’s peer mentorship program and student-run health clinics. He also spent time on quality improvement projects relating to neuromuscular ultrasound and critical care recovery. Ben’s personal interests include hiking, cooking, home brewing, and cheering for his beloved Tar Heels. Both he and his wife Alex (along with their two dogs) are so excited to be joining the Portland community and exploring the Pacific Northwest.

Yuliya Pepelyayeva, D.O., Ph.D.
Yuliya Pepelyayeva was born and raised on the coast of the Black Sea in Yalta, Ukraine. She first came to the U.S. as an exchange student when she was fifteen years old through the Future Leaders Exchange scholarship program. She served as an ambassador of her home country while living with an American host family, who became her second family. Yuliya returned to the U.S. to pursue pre-medical undergraduate studies in Biology at the University of Delaware, where she discovered a passion for research. She conducted biochemical research for two years, where she studied the function of selenoproteins in order to understand their role in cellular homeostasis and tumorigenesis. Yuliya then moved to Michigan to pursue her goal of becoming a physician-scientist by enrolling in the combined D.O. - Ph.D. program at Michigan State University. Her lab research examined the pathogenesis of ankylosing spondylitis and investigated the role of immune modulators as novel therapies. During clerkships, Yuliya discovered a passion for neurology and decided to pursue her career as a physician-scientist in neurology with plans to conduct research in immune-modulated neurologic diseases. Outside of medicine, Yuliya enjoys hiking, bicycling, figure skating, and cooking. During a trip to the Pacific Northwest several years ago Yuliya and her partner Luul fell in love with the PNW, and they are thrilled to be back in Portland with their cat Bella.

Kyle Sharf, D.O.
Kyle Sharf was raised in Bellingham, WA. He had his first encounter with neurology while studying neuroscience at the University of Victoria in Victoria, BC, and while volunteering with the Victoria Brain Injury Society (VBIS). Following his return to the USA, Kyle attended medical school at Kansas City University in KCMO where he fell in love with neurology and all of the mysteries it includes. Outside of the hospital, Kyle loves to mountain bike and snowboard. He is elated to be at OHSU, and return to the beautiful PNW.

Mary Storm, M.D.
was born and raised in the snowiest area of the country: upstate NY. She has also lived in New York City, Tucson, California, Switzerland, and South Korea. Mary majored in biochemistry at SUNY Geneseo, where she also studied computer science and Asian studies and tutored students in those fields as well as math and German. Mary studied medicine at SUNY Upstate, where she enjoyed commuting on her bike even when it was below freezing out. Mary was the president of their Medical Students for Choice club and advocated in her state's capital for the passage of the Women's Equality Agenda. She also enjoyed being a leader of the South Asian Medical Student's Association, where she helped set up their first Holi celebration. When Mary isn't busy with medicine, she enjoys traveling, community activism, hosting couch surfers, eating great food, and playing board and card games. It has long been Mary's dream to live in the Pacific Northwest.

Julie Crocker, M.D.
Julie Crocker grew up in Honolulu, HI, enjoying the many beautiful beaches, hikes and parks. When she turned 18, she decided to get as far away from the islands as she could, and attended college at Northeastern University in Boston, MA. Tired of the cold, she returned to Hawaii to attend medical school at the John A Burns School of Medicine. While in medical school, she enjoyed mentoring undergraduate students while researching environmental risk factors for Multiple Sclerosis and the effect of the COVID-19 pandemic on neurologic patients. In her free time she enjoys hobbies such as writing, woodworking, knitting and sewing. Julie is excited to start a new chapter of her life at OHSU with her rescue dog, Puna. 

Michelle Nguyen, M.D.
Michelle Nguyen was born in SoCal but grew up in the boonies of the San Francisco Bay Area. For college, she moved across the country to Alabama where she reluctantly adopted the phrase “y’all” and discovered her secret talent of eating her weight in crawfish in record times. She studied Neuroscience and Philosophy at the University of Alabama at Birmingham (UAB) and became interested in public health and addressing health inequities. Throughout her undergraduate career she volunteered her time as a counselor for the Crisis Hotline, worked as a rural medical outreach volunteer, and founded a chapter of PERIOD, an organization promoting equitable access to menstrual hygiene products and empowering menstruators to take charge of their lives through advocacy, education, and service. She stayed at UAB for medical school where she continued to work with underserved populations and discovered her passion for Neurology, engaging in multiple QI projects related to stroke and memory disorders. In her free time, she loves to hike, make origami, eat spicy food, and watch sci-fi/dystopian television shows. After a long stint in the southeast, Michelle is thrilled to be returning to the west coast (best coast) and fulfilling her long-time dream of living in the Pacific Northwest.

Daniel Quinlan, M.D.
Daniel was raised in Eagle River, Alaska, located 20 minutes north of Anchorage. He received his Biology degree at the University of Alaska Anchorage, and during college, researched Alaskan ethnobotanicals and worked in mental health and as a scribe at his local ER. During medical school at the University of Washington School of Medicine, he volunteered by talking to high school students about careers in medicine and worked for a year as a pathology “post-sophomore fellow” in the UW pathology department. Ultimately, he followed his original passion for Neurology with plans to return home to Alaska to serve his community. Outside of medicine, Daniel loves rock climbing, mountain biking, reading, movies, and playing board games and video games with friends. He also enjoys spending time with his partner and his dog, Axel. Daniel is thrilled to stay in the Pacific NW, and to train in Portland at OHSU.

Paige Skorseth, M.D.
Paige was born and raised in Baldwin, Wisconsin. She moved to River Falls, Wisconsin prior to high school, and then attended DePaul University (Chicago, IL) for her undergraduate degree in Bioscience. At DePaul, Paige was also captain of the cross country and track & field teams. It was her experience as a Division I athlete that interested her in the role of lifestyle, and specifically diet and exercise, in neurologic disease. She returned to the University of Wisconsin School of Medicine and Public Health for medical school. During her medical school time, she also pursued certificates in clinical research and public health. Some of her past research has focused on eating disorders and iron deficiency in elite athletes, parental and patient expectations for the diagnosis of pediatric concussion, ketogenic diet in pediatric epilepsy, and the correlation of concussion outcomes with certain social determinants of health. Her hobbies include kiteboarding, surfing, trail running (often with her parents), fishing, hiking, and traveling. This year, she is looking forward to making new friends, entering the amazing Portland running scene, and visiting every yurt in the Pacific Northwest.

Department of Neurology residents posed in pyramid style, enjoying their retreat at the Oregon coast
Residents enjoying the Oregon Coast on a retreat