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Current Residents

Our residents originate from several areas throughout the U.S. and beyond. Despite varied academic backgrounds, geographic diversity and career goals ranging from primary care to academic research, our residents share one common goal: to become the best physicians possible.

PGY - 1

Nathaniel Edwards, MD

Medical School: Northeast Ohio Medical University
Undergraduate: Corban University

Nathaniel spent two years substitute teaching in Alaska before heading to medical school in Ohio. Helping the underserved is a passion of his. Nathaniel spent many hours mentoring younger medical students in the medical school's primary care free clinic for the underserved. He enjoys the outdoors, road cycling, gardening and spending time with his wife and two children. He is also happy to be relocating back to Oregon.

Jasper Erickson, MD

Medical School: Oregon Health & Science University
Undergraduate: Linfield College

Although Jasper enjoys traveling (12 countries so far) and spent time studying and working in Austria and Germany, he grew up in Oregon and plans to stay for the time being. On his path to becoming a physician, he did a rotation here at St. Vincent and liked it so much, he decided it was the best choice for his intern year (we agree). Jasper worked on numerous research projects in medical school and volunteered to foster student interest in Radiology. After Jasper completes his year here, he will be heading to OHSU for his Radiology training. In addition to traveling, his other hobbies include hiking, distance running, and backpacking into remote wilderness areas of the West Coast. When not appreciating the outdoors, he reads, plays frisbee, and enjoys craft beer.

Jakob FeeneyJakob Feeney, MD
Medical School: Medical College of Georgia at Augusta University
Undergraduate: College of Coastal Georgia Brunswick

As a volunteer for Mercy Health Center throughout his medical school career, Jakob’s diverse resume includes student clinic manager, Christmas caroling leader, clinic volunteer at the patient free clinic for the underserved, and working with medical residents in the mobile medical clinic providing medical care to neighborhoods with limited access. In addition to finding a passion in medical education, Jakob is a talented singer and actor, enjoys cooking and baking (including decorating), and plays board and video games.

Caleb FreemanCaleb Freeman, MD

Medical School: Creighton University School of Medicine
Undergraduate: Brigham Young University

After his premlim year, Caleb is interested in continuing his education and career in dermatology at OHSU with a goal of specializing in melanoma. He volunteered as a president and mentor for socioeconomically disadvantaged teenagers and was a clinic volunteer at the Magis Dermatology Clinic for the underserved and homeless. He enjoys sports such as soccer, lacrosse and snowboarding and reads to relax. Not one to be typical, Caleb builds yurts. He enjoys spending time with his wife and small child.

Nicholas Gates

Nicholas Gates, MD

Medical School: Louisiana State University of Medicine
Undergraduate: University of Colorado

Leaving his home state of Colorado for Louisiana after college, Nicholas discovered his love for working closely with under-served communities through volunteering. His work as an EMT in New Orleans gave him real-world experiences in medicine before applying to medical school. In medical school, he was elected co-director of the student-run homeless clinics helping provide services to those that needed it most. In his free time, Nicholas writes songs on guitar & piano, enjoys the outdoors, video games, and yard games with friends. He is interested in pursuing a career in nephrology or pulmonary critical care but overall keeping an open mind.

Nancy HaNancy Ha, MD

Medical School: University of Iowa
Undergraduate: Cornell University

Nancy grew up in Portland and has a deep appreciation for the natural beauty many areas have to offer. Nancy co-founded the Asian Pacific American Medical Student Association in Iowa City and worked as a student tutor. She volunteered at the Free Mobile Clinic serving the needy while in medical school. She likes traveling, is an avid runner and plays classical piano and violin. She enjoys learning new things so during college, and something totally different, she took up the Japanese taiko drum. Nancy will be heading to Stanford for a career in anesthesiology after spending her preliminary year here at St. Vincent’s.

Wiley HarkensWiley Harkens, DO

Medical School: Pacific Northwest University
Undergraduate: California Polytechnic State University

After spending his undergraduate years in California, Wiley decided to return to the Pacific Northwest. During his educational years, he volunteered as a food packer, packaging food for a hunger relief agency, worked at the AIDS Support Network & Hep C Project for low income members of the community, and also worked as a “Big Doc” mentoring underclass medical students navigating their first year of medical school. He is an artist and makes woodblock prints, ink & graphite drawings, as well as acrylic paintings. He enjoys rock climbing, traveling, and watching foreign films.

Thatcher HouldinThatcher Houldin, MD

Medical School: University of Colorado School of Medicine
Undergraduate: Case Western Reserve University

Thatcher has quite a diverse background in work and volunteer experiences. He has done student lectures, been a teaching assistant as well as a construction volunteer for Habitat for Humanity, and mentored homeless youth for Attention Homes in Boulder, CO. Growing up with parents who ran an outdoor adventure summer camp gave Thatcher a love for the outdoors. When he is not rock climbing or mountain biking, he likes to listen to science fiction/fantasy audio books.

Karissa KuniharaKarissa Kunihira, MD

Medical School: Loma Linda University
Undergraduate: University of California, Los Angeles

In addition to the numerous research projects Karissa worked on in medical school, she still had time to volunteer as a tutor for first and second year students and work part-time as a dental assistant on evenings and weekends. She speaks several languages including German, Japanese, and Spanish. Her appreciation for the outdoors would explain her hobbies of landscape photography, alpine skiing, ultralight backpacking, and hiking. She enjoys travel, music and coffee too.

Divya Nimmatoori

Divya Nimmatoori, MD

Medical School: NTR University of Health Sciences, India

Born and raised in India in a family full of physicians, Divya is the 21st doctor in her family. She had an inherent liking for medicine from the beginning but recognized her true calling when she saw her dad serve landmine victims during the Gulf War. Divya volunteered with EKAM, a non-profit group that strives to uplift healthcare for the underprivileged, was a clinical skills instructor for first- and second-year medical students at OHSU and worked for ambulatory care quality improvement. A passionate singer, she has recorded a song for an Indian movie, is a part of a music band, is involved in fundraising-through-singing and wants to research the benefits of music therapy in the future. She also enjoys Bollywood dancing, fusion cooking, spending time with her husband and little daughter and catching up with her parents and sister over zoom.

Amy PohodichAmy Pohodich, MD

Medical School: Baylor College of Medicine
Undergraduate: University of Texas at Austin

Amy is looking forward to a career in ophthalmology after her preliminary year here at St. Vincent’s. She enjoyed neuroscience research and teaching while pursuing her MD and PhD at Baylor College of Medicine. Volunteering at Squirrel Creek Ranch for pediatric cancer patients and their families was also a favorite activity of Amy's during graduate school. She has been making stained glass pieces since she was 7 years old, and her most recent project was a stained-glass brain! She also enjoys Poi fire spinning and has performed for pediatric cancer patients and their families. Just to make sure she has some hobbies that appear a little more mundane, she likes to do crossword and jigsaw puzzles.

Banu RamachandranBanu Ramachandran, MD

Medical School: Oregon Health & Science University
Undergraduate: Massachusetts Institute of Technology

After a successful law career, and raising two children, Banu decided that medicine was her true calling. Before medical school, Banu volunteered by doing pro bono legal work, and during medical school, began volunteering by mentoring a disadvantaged student applying to medical school and by facilitating narrative medicine sessions for other medical students at OHSU. She is working to learn Spanish, understands basic Tamil, and runs in her spare time. She enjoys cooking and entertaining, crossword puzzles, and reading, and might break out in song if you put her in front of a karaoke microphone.

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PGY - 2

Tatyana Aleksandrova

Tatyana Aleksandrova, MD

Medical School: Oregon Health & Science University
Undergraduate: Oregon Health & Science University, Nursing
Undergraduate: Linfield College, Accounting

Tatyana was born and raised in Turkmenistan. She migrated to the states in 2001 as an exchange student under the Freedom Support Act scholarship. She enjoys sewing, cooking, and is a classical pianist. After prior careers as a tax accountant and a registered nurse, Tatyana decided to pursue medicine. As a medical student Tatyana rotated on our ACU B service and in our primary care clinic. Tatyana is also fluent in Russian.

Joanna BoveJoanna Bove, MD

Medical School: University of Washington School of Medicine
Graduate: University of Washington, Public Health
Undergraduate: Barnard College New York, American Studies

Joanna’s many achievements include, Peace Corps volunteer, public health researcher, and a triathlete. Some examples of her research include, social disparities, polysubstance abuse, infant withdrawal, HIV and malaria while in the Peach Corps in Madagascar. She has competed in two full Ironman's and six half Ironman's. Joanna is fluent in French and Spanish. After residency, Joanna is planning to go into Primary care.

Timothy Duh

Timothy Duh, MD

Medical School: Indiana University School of Medicine
Undergraduate: University of California, Berkeley, Molecular/Cell Biology

At the age of sixteen, Timothy migrated to America from Taiwan. His hobbies include cooking and tabletop games. Both of his parents are physicians and still reside in Taiwan. Timothy has been a volunteer for the Boys & Girls Club, and the student outreach clinic at Indiana University. He is also fluent in Chinese. After residency, Timothy plans to pursue Cardiology or Nephrology, but is keeping an open mind.

Robert FuRobert Fu, DO

Medical School: Touro University Nevada College of Osteopathic Medicine
Undergraduate: University of Oregon, Human Physiology, Japanese

Born in China, Robert moved to Japan at age 6, and then moved to the United States at age 12. He grew up in Beaverton and graduated from Westview High. Robert enjoys home and automobile improvement projects, landscaping/gardening, cooking ethnic cuisines, hiking, and traveling. Robert is fluent in Chinese and Japanese. Ultimately, he would like to do a dual hospital/primary care role in conjunction with his father’s clinic.

Gabriel HocumGabriel Hocum, DO

Medical School: Western University, Osteopathic Medicine
Undergraduate: Southern Illinois University, Biology

Gabe rotated with us as a medical student on the Cardiology service. His hobbies include music: record collector, amateur recording, playing the guitar; and the outdoors: running, hiking, camping, Frisbee and disc-golf. He was a high school assistant wrestling coach as well as a substitute teacher. He was also a teaching assistant at Western University.

Tuan PhamTuan Pham, MD

Medical School: Loma Linda University School of Medicine
Undergraduate: Oregon State University, Biochemistry & Biophysics

Tuan was born in Vietnam. At the age of 7, his parents immigrated to the United States. He is thrilled to be returning to Portland after medical school to be with his family. Tuan is an avid runner—his way of relaxing after a long day. He enjoys cooking, and is fluent in Vietnamese. Post residency interests are Pulmonary/Critical Care or Cardiology.

Elizabeth SeversonElizabeth Severson, DO

Medical School: Western University College of Osteopathic Medicine
Undergraduate: Clark University, Biochemistry/Molecular Biology

Lizzy was born in Salt Lake City. As a medical student, Lizzy rotated in our ACU service. During her time off, she enjoys cooking, playing tennis, playing basketball, going on walks, and hiking. Lizzy has also volunteered her time working with children experiencing homelessness, engaging them in educational activities. Following residency, Lizzy is planning to become a Geriatrician.

Ali TurfahAli Turfah, MD

Medical School: University of Baghdad College of Medicine, Iraq

Ali grew up in Baghdad, Iraq where he attended medical school and spent a lot of time volunteering with UNICEF to help displaced refugees after graduation. Ali transferred into our program from Montefiore Mount Vernon Hospital in New York where he was on the front lines of fighting the coronavirus outbreak. In his spare time, Ali enjoys traveling, playing soccer, riding his electric scooter, and cooking Middle Eastern food. Following residency, Ali is planning to become a primary care physician.

Nathan ZvejnieksNathan Zvejnieks, MD

Medical School: University of South Dakota School of Medicine
Undergraduate: Colorado State University, Biomedical Sciences

Nathan grew up in the Black Hills of South Dakota and loves all things outdoors; skiing, snowboarding, hiking, backpacking and rock climbing. He worked several years with the ski patrol. After college, Nathan had the privilege to spend a year at NASA as a research intern through the National Space Biomedical Research Institute where he worked on several different projects. In addition to his various research projects, Nathan has volunteered a lot of his time working with, and mentoring, Native American youth in various different clinics and other settings.

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PGY - 3

BarayugaStephanie Barayuga, M.D.

Medical School: University of Hawaii School of Medicine
Undergraduate: University of Hawaii, Bioengineering

Stephanie came to us from Honolulu, her hometown. She enjoys practicing yoga, Hawaiian quilting and kickboxing. She did volunteer work for an organization that provided free healthcare services to the homeless population. After residency, she plans to return to Hawaii to serve her community by volunteering at the same free healthcare clinic she volunteered at as a pre-med student.

CamRichard Cam, D.O.

Medical School: Touro University College of Osteopathic Medicine
Undergraduate: University of California, Berkeley, Bioengineering

Richard is a biomedical engineer and a California native. While in college, Richard volunteered as a case worker providing access to medical and social services to the under-served community in the downtown Berkley area. In his free time, he enjoys designing and folding origami, PC gaming, DIY projects, and archery. He also dabbles in playing cigar box guitar and speaks Mandarin. He is interested in a career as a hospitalist, but is keeping his options open.

CatralJillian Catral, M.D.

Medical School: Texas A&M College of Medicine
Undergraduate: University of Texas Dallas, Criminology

Jillian was born in the Philippines but grew up in Dallas and considers herself a native Texan. Though she had interests in pursuing medicine in high school and undergrad, her drive to become a doctor was solidified while volunteering and scribing at local hospitals. Her hobbies include longboarding, traveling, live music, and interior design, and she is excited to explore the natural wonders of the PNW. Jillian speaks some Spanish and is fluent in Tagalog. She is considering hospital medicine or potentially seeking fellowship in the future.

GenstlerJoshua Genstler, M.D.

Medical School: Loma Linda University School of Medicine
Undergraduate: University of Washington, Biochemistry

Joshua was born in Redmond, WA. Most of his childhood was spent on a rural ranch where he gained an early appreciation for simple living and hard work. He has a particular interest in the fine arts volunteering his time and talent teaching children piano and playing the organ for various churches. He enjoys numerous outdoor activities including alpine climbing, hiking, canoeing, and woodworking, just to name a few. After residency, he plans on a career with opportunities to mentor residents and medical students.

GrantLeah Grant, M.D.

Medical School: Creighton University School of Medicine
Undergraduate: Rockhurst University, Cell & Molecular Biology

Leah relocated to Portland from Kansas. Leah was a college volleyball player at Rockhurst, then while at Creighton she was on the women’s club team and helped coach. She has also tutored high school science, math, and was a summer lifeguard. Leah found a passion in working with the homeless and uninsured population while she was in medical school. She is interested in pursuing an Infectious Disease fellowship after residency.

KNguyenKhoi Nguyen, D.O.

Medical School: Alabama College of Osteopathic Medicine
Undergraduate: University of Washington, Cell & Molecular Biology

Khoi grew up in Washington State after emigrating from Vietnam. He worked summers through middle and high school picking berries. Prior to medical school, was a self-employed photographer. He was awarded with the Governor’s Award of Excellence for outstanding volunteer service in the community, ranging from providing healthcare to the underserved to mentoring youth living in public housing. Khoi is fluent in Vietnamese. Additional hobbies include, camping, hiking, cooking, sports, and spending time with family. Khoi plans to pursue a medical career as an Internist.

RozenbergBoris Rozenberg, D.O.

Medical School: Touro University College of Osteopathic Medicine
Undergraduate: University of Washington, Physiology

Boris was born in Moscow, Russia, and speaks fluent Russian. We had the pleasure of Boris rotating with our program as a medical student. He has done volunteer work doing physicals for low-income athletes wanting to participate in high school sports. Boris enjoys staying active through weight lifting, hiking, scuba diving, tennis and basketball. To keep his mind busy, he plays chess and reads. Boris is keeping his options open for his continuing education and future career goals.

SyDaphne Sy, M.D.

Medical School: Western Michigan University School of Medicine
Undergraduate: University of Michigan, Nursing & Biochemistry

Daphne came to us from Michigan. She decided to go to medical school after obtaining her nursing degree. Daphne is an avid volunteer in the community and has studied Japanese literature and language. In her free time, she likes to sew and design costumes and clothing, draws, paints, writes short fiction stories, and plays video games. Daphne is considering a career as a teaching hospitalist.

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