Our Residents

Tiffany Fung, MD, is a resident physician at the Keck Medicine of USC Family Medicine Program. A native of Southern California, she graduated UCLA with a degree in biochemistry before continuing her medical education at Saint Louis University. Throughout her academic journey, Dr. Fung cultivated a passion for mentoring aspiring medical professionals and advocating for patients through her work in free health clinics.

With a steadfast commitment to her patients, Dr. Fung is dedicated to ensuring access to high-quality healthcare. She prioritizes compassionate, patient-centered care, ensuring that each treatment plan is tailored to address the distinct needs of each individual. Dr. Fung’s approach to medicine is rooted in fostering long-term collaborative relationships with her patients, empowering them to make well-informed decisions about their health. She is privileged to care for multiple generations of families while simultaneously contributing to the broader community through outreach and health education initiatives. Delighted to return home to Los Angeles, Dr. Fung is honored to join USC, where she can give back to the community that sparked her passion to pursue medicine.

Outside of the clinical world, Dr. Fung enjoys immersing herself in nature, spending quality time with loved ones, paddleboarding, traveling, exploring new culinary experiences, and pursuing her creative interests in oil painting.

Israel Garcia, MD (He/Him) is a resident family physician at the Keck Family Medicine Residency Program and a first-generation Salvadoran American from Whittier, California. He is deeply committed to serving underrepresented and historically marginalized communities across Los Angeles, with particular interests in LGBTQ+ medicine, reproductive justice, and health equity. He earned his Bachelor of Science in neuroscience from the University of California, Riverside, where he was involved in research on developmental psychology and mindfulness. He later earned his MD from St. George’s University School of Medicine, where he led and co-authored several research efforts focused on cardiovascular outcomes and chronic disease. His work has also been published in academic, peer-reviewed journals. Fluent in both English and Spanish, Dr. Garcia values culturally responsive, and patient-centered care. He has participated in international medical missions to El Salvador and Cambodia, providing clinical care, health education, and emergency response training in resource-limited settings. Dr. Garcia also serves as an American Academy of Family Physicians (AAFP) Advocacy Delegate Ambassador. Outside of medicine, Dr. Garcia enjoys traveling, cooking, painting, scuba diving, and engaging in ecological conservation. He is dedicated to providing full-spectrum, evidence-based care that reflects the diverse needs of the communities he serves.

Jun Kyoung, MD (he/him) is a resident physician Keck Medicine Family Medicine Residency Program.

He was born in Seoul, Korea and immigrated to the United States when he was 6 years old. He grew up in Koreatown in Los Angeles before relocating to Valencia, then later San Diego to complete his undergraduate degrees in Physiology & Neuroscience and Ethnic Studies at the University of California, San Diego. Dr. Kyoung then completed medical school at the University of Toledo College of Medicine and Life Sciences, where he was heavily involved with volunteering at and the management of the local student-run free clinic, which served thousands of patients every year at no cost, regardless of insurance status. Through this community-based resource, he was able to work with student and provider volunteers to not only help address food insecurity, mental wellbeing, and registering for Medicaid, but also provide consistent continuity of care, treatment, and a source of community and support to those that otherwise would have slipped through the cracks of our imperfect healthcare system.

Dr. Kyoung is excited to return to Los Angeles and serve the communities that he grew up with. He is committed to endorsing equity in the healthcare system and, as a family medicine physician, he truly believes in the values of preventative medicine, continuity of care, and managing the patient as a whole. His interests include community medicine, addiction medicine, integrative medicine, and lifestyle medicine. In his free time, he enjoys exploring all the great food that Los Angeles has to offer, watching and attending Dodgers games, long walks with his fiancée,  jamming out to musicals, and taking an unnecessary number of photos of his two cats.

Caryssa Lim Chang, MD, MPH is a resident physician at the Keck Medicine Family Medicine Residency Program. She was born and raised in Los Angeles and is now a proud resident of the San Gabriel Valley. She went to the University of Chicago for her undergraduate studies in Biology and Human Rights (BA ’16) and went on to pursue a Master of Public Health in Community Health Sciences from the University of California Los Angeles (MPH ’18).

Early in her life and her training, Caryssa became deeply aware of the power of communities. She saw how her own immigrant faith community protected older adults against loneliness and isolation, housed their unhoused neighbors and friends, and advocated for undocumented members of the congregation. These life experiences gave rise to her love and pursuit of community health and advocacy, as well as community-led research initiatives.

As a family physician, Caryssa believes firmly that medicine is an act of individual compassion and a tool for social justice. In all she does, she hopes to bring with her a deep humility and an unrelenting pursuit to fight for what is right and just for individuals, families, and communities. In her free time, you can find Caryssa hosting book clubs in her apartment, running near any body of water, and cooking hearty meals for her family and friends.

Devaughn Mark, MD (he/him) is a resident physician at the USC Keck Family Medicine Program.

Originally from the beautiful island of St. Lucia and raised in Brooklyn, New York, he brings a diverse cultural perspective to his medical practice. He earned his Bachelor of Arts in Biology from the University of Pennsylvania and his medical degree from Howard University College of Medicine.

Devaughn is passionate about community engagement and academic support, having tutored fellow medical students during his time in medical school. He is deeply committed to providing comprehensive, patient-centered care that addresses the holistic needs of each individual.

Outside of medicine, he finds joy and inspiration in anime, video games, and sports.

Srishty Amarnani, MD is a resident physician at the Keck Medicine of USC Family Medicine Program. Raised in West Los Angeles, she started her academic journey at Santa Monica College and transferred to UC Berkeley, earning a degree in Environmental Economics and Policy. Her background inspired her interest in primary prevention and systemic reform.

During her medical training at Columbia University and SUNY Downstate Medical Center, Srishty engaged with underserved communities through the Health Equity and Global Health pathways. She taught sex education, advocated for gender-affirming care, and volunteered at the Brooklyn Free Clinic, providing care to undocumented and uninsured patients. These experiences solidified her commitment to holistic and compassionate medicine.

Passionate about reproductive care, global medicine, integrative medicine, and mental health, Srishty is dedicated to bridging the gap between healthcare and social determinants of health. In her free time, she enjoys dance workshops, traveling, and organizing social, wellness, and charity events for her for friends and loved ones. Her diverse experiences drive her compassionate and dedicated approach to patient care.

Ronald Castillo, MD (He/Him) is a resident physician at the USC Keck Family Medicine Residency Program.

He was born and raised in Boyle Heights, California. Dr. Castillo is the proud son of Latin American immigrants and is fluent in English and Spanish. He earned his Bachelor of Science in biology at the University of California, Riverside and earned his medical degree from the Keck School of Medicine of USC. His passion for preventative medicine led him to teach a local community fitness class during medical school. Dr. Castillo is passionate about mentorship and continues to volunteer as a longitudinal mentor for underrepresented minority pre-health students.

Outside of medicine, Dr. Castillo enjoys spending time with loved ones, healthy cooking, strength training, and playing guitar.

Jesslyn Magee-Gonzalez, MD is a resident family physician at the Keck Family Medicine Residency Program and a Southern California native, deeply committed to serving the communities of the area. She began her academic journey at Xavier University of Louisiana, where she earned a bachelor’s degree in Biology. She then pursued a Master of Science in Applied Sciences at the Keck Graduate Institute in Claremont, CA, followed by her medical degree at the University of California, Davis in Sacramento. While at UC Davis, Dr. Magee-Gonzalez completed the prestigious Academic Research Careers program (ARC-MD), focusing on academic medicine and research.

Dr. Magee-Gonzalez has been actively involved in research and initiatives aimed at enhancing healthcare delivery and supporting the inclusion of students from Historically Black Colleges and Universities (HBCUs) in medical school.

In her clinical practice at Keck Medicine of USC, Dr. Magee-Gonzalez emphasizes patient education, shared decision-making, and clear communication to empower patients to take an active role in their healthcare. Her research interests include improving women’s health services, understanding the impact of trauma and adverse childhood events on chronic disease, and exploring digital health advancements to promote health equity.

Outside of her professional life, Dr. Magee-Gonzalez enjoys spending time with her family, reading, and cooking.

Linda Lu, MD (she/her) is a resident physician at the Keck Medicine Family Medicine Residency Program. Dr. Lu is a proud daughter of Chinese and Taiwanese immigrants, which shaped her journey to being a physician in Los Angeles.

Raised in the frosty state of Minnesota, Dr. Lu recognized the value of hard work, compassion, and resilience from her family and surrounding communities as they worked together to build a stronger future. Throughout college, she worked as a nursing assistant/home health aide at a nursing home where she had the privilege of caring for seniors through various stages of their lives, including assisted living, transitional care, and hospice care. Caring closely for this community and their families over the course of four years embodied the essence of family medicine where she could continue serving an aging population with the dedication, patience and empathy they deserve. Dr. Lu earned her bachelor’s degree in psychology and medical degree at the University of Minnesota.

In her free time, you can find Dr. Lu playing pickleball, volleyball, kayaking, and eating good food in the San Gabriel Valley.

Mai Nojima, MD is a resident physician at the Keck Medicine Family Medicine Residency Program.

Mai originally is from Japan, but has moved all over throughout her life, including New York, Georgia and now for the 4th time, Los Angeles. She went to the University of California, Berkeley where she majored in Neurobiology and Public Health, and was part of the inaugural class at Kaiser Permanente Bernard J. Tyson School of Medicine.

Mai’s passion for medicine stems from her younger sister, who has a rare developmental disability. Witnessing her sister and family navigate through the complex healthcare system inspired her to focus on increasing care access for people with disabilities through advocacy efforts. During medical school, she created a longitudinal curriculum that emphasized on providing equitable care for the disability community and was co-founder of the Special Olympics student group. She hopes that she can continue collaborating with the disability community to create medical spaces that are more comfortable and welcoming for those like her sister.

Outside of medicine, Mai loves to cook. She went to culinary school during her gap year with hopes of incorporating culinary medicine in her future practice. She is originally a tennis player, but her co-residents have fully converted her into a pickleball player as well. She loves anything outdoors and is hoping to cross off a few national parks during her time in residency.

Jonathan Raymundo, MD, MBA (he/him) is a resident physician at the Keck Medicine Family Medicine Residency Program. He is originally from Pasadena, CA before attending Union College in Upstate New York where he earned his bachelor’s in Biology/Psychology. He went on to obtain both his MBA in Healthcare Management at Clarkson University and his medical degree at Albany Medical College.

After nearly a decade living in NY, Dr. Raymundo is thrilled to return to Los Angeles and serve its diverse communities. He is excited to come home and reunite with his close family and friends (and leave the snowy winters behind!)

Dr. Raymundo values a holistic approach utilizing empathy, active listening, and good communication to create a safe environment for patients and to promote both physical and mental well-being. Grateful for the support he received throughout his medical journey, he gives back by providing mentorship to individuals of all ages. He also volunteers with youth sports and coached a local volleyball club team during his time in medical school.

In his free time, you can find Dr. Raymundo either beating his fellow co-residents at pickleball or spending quality time with his siblings and cousins. He also enjoys trying new food places, cheering on his favorite sports teams, and playing basketball and volleyball to trick himself into getting cardio.

Nicole Aimua, MD, MPH (she/her) is a resident physician at the Keck Medicine Family Medicine Residency Program.

Dr. Aimua grew up in Riverside, CA and studied biological sciences with an emphasis in medical microbiology at the University of California, Davis. She then went on to attain a Master of Public Health at Brown University School of Public Health in Providence, RI. Afterward in Atlanta, GA, she completed her medical degree at Morehouse School of Medicine.

As a proud child of Nigerian immigrants, her commitment to be in service of others was well-established throughout her life. This commitment solidified while serving the Oak Park community of Sacramento during her time at UC Davis. Understanding the role of health inequities beyond what is seen in the clinical setting inspired her pursuit in public health. While doing public health, she explored substance use prevention and health care for older adults and justice-involved folks. Dr. Aimua continued this pursuit in using public health as a foundation for patient care during her time in medical school in the city of Atlanta and abroad in Tanzania. At Keck, she looks forward to practicing full-spectrum medicine for vulnerable populations.

Dr. Aimua aims to create meaningful relationships with her patients by providing a space for them to tell their stories and take part in their care in a collaborative manner. She celebrates the value in understanding a community’s impact on patient health. Her goal is to tailor care specific to her patient’s needs through physician/patient partnerships.

In her free time, Dr. Aimua enjoys cooking new meals, kickboxing, trying to garden, reading thrillers, learning French, doing puzzles, and singing ‘00s pop songs terribly.

Vincent Arriola, MD, is a resident physician at the Keck Medicine Family Medicine Residency Program. Born and raised in Southern California, he completed his undergraduate studies at USC, graduating with a degree in Neuroscience while working as a student trainer for USC athletics.

Dr. Arriola earned his medical degree at the UCLA/Drew medical program where his compassionate nature led him to volunteer at the UCLA mobile clinic. He has an unwavering passion to care for the underserved and to make a profound difference in the lives of marginalized communities.

Throughout medical school, he dedicated his time to volunteering at health fairs and charity events in low-income communities within Los Angeles. He has previously worked as a personal fitness trainer and teacher.

Dr. Arriola’s affinity for attending to individuals across all stages of life, from adults to children and even newborns, while embracing a person-centered approach to care, drew him to Family Medicine. He firmly believes that adopting healthy eating habits, engaging in regular exercise, and effectively managing stress can play a pivotal role in disease prevention and overall well-being.

Excited to continue his residency journey in the vibrant city of Los Angeles, Dr. Arriola eagerly anticipates the opportunity to forge meaningful relationships with his patients.

In his free time, he enjoys playing the electric guitar, watching live music performances, maintaining an active lifestyle through lifting weights, watching sports, snowboarding, and catching the latest movie releases.

Alberto Ortega, MD, MBA (he/him) is a resident physician at the Keck Medicine Family Medicine Residency Program. Dr. Ortega is the proud son of Latin American immigrants and is fluent in English and Spanish. A native of Los Angeles, he attended USC for his undergraduate, graduate, and medical school education.

Prior to medical school, Dr. Ortega spent over 10 years gaining clinical experience by serving in various roles including Emergency Medical Technician, certified Spanish interpreter, health educator, and clinical researcher. Dr. Ortega’s personal and professional experiences ultimately inspired him to become a physician leader. He is passionate about improving access to primary care, championing disease prevention, and delivering personalized care to patients of all ages and backgrounds. As a family physician, Dr. Ortega aspires to partner with his patients to help them achieve their wellness goals. He is thrilled and honored to serve his home community as part of Keck Medicine of USC.

Outside of medicine, Dr. Ortega enjoys spending quality time with his loved ones, especially if it involves going for walks on the beach or cheering on the Dodgers.

Valerie Otti, MD (she/her) is a resident physician at the Keck Medicine Family Medicine Residency Program.

She grew up in Lagos, Nigeria, where she became interested in medicine after seeing the effects of infectious diseases in her community. While in Missouri where she attended Washington University in St. Louis, she studied Anthropology, focusing on global health and the environment. Her interest in public health led her to work in breast cancer prevention research, which she continued at the University of Chicago where she received her medical degree.

Dr. Otti serves on the community impact projects team housed within the NGO, African Impact Initiative. She is passionate about partnering with communities to build tailored health systems and address social factors influencing health care, especially in underserved settings. Dr. Otti hopes to work closely with patients to improve their personal experiences and understanding of their healthcare. Dr. Otti appreciates a good tennis match, an afro-beat dance party, or a historical fiction or nonfiction novel.

Justin Siu, MD, MS is a resident physician at the Keck Medicine Family Medicine Residency Program. He was born and raised in the San Gabriel Valley of Los Angeles County where he developed a strong appreciation for the diversity of his community. He earned his bachelor of science in neuroscience/physiology and minor in global health from the University of California, San Diego. His curiosity for different cultures and communities led him to work in a couple of global medical non-profits and pursue a masters in Global Medicine (management) at the University of Southern California. He obtained his medical degree from Boston University School of Medicine, where he led the Global Health Equity Elective. While working at Boston Medical Center, a safety net hospital, Dr. Siu sought to improve the quality of care in the surrounding underserved communities. He helped establish the pediatric department’s social determinants of health screener, conducted quality improvement research in the Refugee Women’s OB/GYN department, and was able to establish free transportation for refugee patients for whom transportation was a barrier. Prior to starting residency, he also worked in education teaching sex ed in grade schools throughout LA county, as he is passionate about uplifting access to gender-affirming care. He believes healthy communities are built on evidence-based policies, equitable management, and robust education in addition to excellent healthcare. Thus, he strives to do his best advocating for patients both inside and outside the clinic. He is honored to return home to Los Angeles to serve his community.

Mitchell Veith, MD is a resident physician at the Keck Medicine Family Medicine Residency Program. He grew up in Hershey, PA, and attended Columbia University where he majored in Neuroscience and Music. After graduating, Dr. Veith worked as a research assistant at Memorial Sloan Kettering Cancer Center in New York and volunteered as an adaptive swimming coach for youth with disabilities at Project Happy NYC.

He attended Albert Einstein College of Medicine in the Bronx, NY. During his training, Dr. Veith helped lead community volunteer responses to the COVID-19 pandemic, served in a free clinic for undocumented and uninsured patients, and founded a student group to explore public health and preventive medicine. These experiences inspired him to enter a career in Primary Care, which he believes is the cornerstone of an equitable health care system. To best serve patients from diverse backgrounds, he emphasizes building relationships, partnering with community organizations, and understanding how social and lifestyle factors influence health.

Outside of medicine, Dr. Veith loves writing and playing music, traveling with his wife and Jindo pup, hiking, and catching up with friends over a game or a good meal.