3rd Year Residents



Jafar Ayyad, MD |Texas | Medical School: St. George University

Dr. Ayyad was drawn to family medicine because of its dynamic nature. He can practice pediatric, adult, geriatric medicine, and even care for those in urgent care. He is interested in making a tangible impact in someone’s life so that they may never feel “underserved.”



Silvia Buenrostro, MD | Perris, CA | Medical School: Universidad de Ciéncias Médicas, Costa Rica

Dr. Buenrostro is eager and excited to provide bilingual and multicultural healthcare to underserved populations. Her interest includes OB, Women's health, and underserved medicine. In her free time, she enjoys traveling, dining out and spending time with her family.



Olympia Kabobel, MD | Phoenix, AZ | Medical School: Western University

Dr. Kabobel has a passion for integrative and osteopathic medicine. She is committed to bringing these modalities of healing and wellness to underserved populations. In her free time she enjoys hiking with her two dogs Jojo and Petey, vegetarian cooking, and yoga.



Darrick Lee, DO | San Francisco, CA | Medical School: Des Moines University

Dr. Lee is passionate about the medicine of chronic disease and working with underserved communities. He is happy to be back in California where he can serve patients from all walks of life. In his free time, he loves to travel, dine out, and is an avid basketball enthusiast.



Ethan Lin, MD | Berkeley, CA | Medical School: Ross University School of Medicine

Dr. Lin is thrilled to be at CHMC and looking forward the high quality training, furthering the mission to serve a diverse underserved population, and robust community involvement. He is so excited to be back in California and will be spending his days off exploring the great outdoors in and around Los Angeles


Evan Martin, MD | Grand Rapids, MI | Medical School: University of Michigan

Dr. Martin's interests have centered on improving the health of rural and urban immigrant populations through interventions that affect health disparities. He enjoys hiking through the Angeles National Forest and finding pickup soccer games. He still roots for Michigan football. Go Blue!


Leslie Ramirez, MD | Los Angeles, CA |  Medical School: Drexel University

Dr. Ramirez is interested in the medically underserved, patient education, and business of medicine. She excited to continue her medical education and help serve her local community. During her off time, she enjoys spending time with her family and exploring the multicultural cuisine.


    Michelle Yim, DO, MPH | Los Angeles, CA | Medical School: Western University

Dr. Yim is interested in integrative medicine, public health, and underserved medicine. Born and raised in Los Angeles, she hopes to provide a multicultural and multimodal approach to healthcare with an osteopathic touch. She is excited to continue her love for working with the underserved community while also balancing her passion for dance and yoga.