Internal Medicine Los Angeles Medical Center - Leadership

Joon S. Park, MD
Program Director

Joon S. Park, MD
Program Director

Undergraduate School

Stanford University

Medical School

Loma Linda University

Residency Training

Internal Medicine Kaiser Permanente LAMC

I trained as a resident here and stayed on as a 4th-year Chief Resident then Internal Medicine Hospitalist. I joined the Academic Hospitalist Group because I truly felt that I could practice medicine the way it was supposed to be practiced – with true interdisciplinary teamwork, patient-focused care that ensures patients are not lost to follow up, and also evidence-based medicine that is largely free from financial/social pressures (we as physicians have final say on medical decisions). Looking back, the greatest strength of this program to me was the ability to follow your own panel of patients in ALL phases of care – outpatient, inpatient, procedures, and at home via home health or various other monitoring programs. This is a unique training opportunity that allows you to see how your decisions impact the patient at each phase and allows you greater insight into ways to improve patient outcomes and satisfaction.

Cynthia Ho, MD
Associate Program Director, Inpatient Education

Cynthia Ho, MD
Associate Program Director, Inpatient Education

Undergraduate School

Northwestern University

Medical School

Keck School of Medicine

Residency Training

Combined Internal Medicine and Pediatrics, LAC+USC

I completed my residency in Combined Internal Medicine and Pediatrics at Los Angeles County + University of Southern California Medical Center and was an academic Hospitalist for close to a decade before coming to KP. I enjoy working at KP LAMC because of the diverse patient population, emphasis on patient-centered care and work-life balance, humble and thoughtful colleagues, and the opportunity to be a part of resident education. Teaching is one of the most fulfilling aspects of my job. I enjoy helping residents optimize their strengths as well as guiding them through the challenging moments throughout residency. I believe working with residents also helps me grow and challenges me to continue to learn through my career.

Joan Kho, MD
Associate Program Director - Outpatient Education

Joan Kho, MD
Associate Program Director - Outpatient Education

Undergraduate School

UC Berkeley

Medical School

New York Medical College

Residency Training

Internal Medicine Kaiser Permanente LAMC

I am a graduate of the program in 2005 and have stayed on at LAMC in a blended outpatient and inpatient practice. I treasured my training experience and have been fortunate to be involved in resident training throughout my career. I am excited to take this larger role as Associate Program Director and pass on the joys and skills of outpatient medicine to our housestaff.

John Sim, MD
Co-Director of Joint IM / Research Track

John Sim, MD
Co-Director of Joint IM / Research Track

Undergraduate School

UCLA

Medical School

Rosalind Franklin University of Medicine and Science

Residency Training

Harbor UCLA

Fellowship Training

Nephrology, Kaiser Permanente LAMC

Dr. Sim is a nephrologist at the Kaiser Permanente Los Angeles Medical Center. He is the LAMC research chair and has headed physician research development since 2012. His research interests are in complex hypertension, glomerulonephropathies, polycystic kidney disease, chronic kidney disease, and patient safety. He sees referral patients given his expertise in glomerulonephritis and polycystic kidney disease. His work focuses on the risk factors, associations, and comparative effectiveness of management strategies to develop and implement more effective and efficient treatment methods. His findings in hypertension, glomerulonephritis, and CKD have led to several changes in care models at KPSC.

Cheng-Wei Huang, MD
Associate Program Director, Research Initiatives / Co-Director of Joint IM / Research Track

Cheng-Wei Huang, MD
Associate Program Director, Research Initiatives / Co-Director of Joint IM / Research Track

Undergraduate School

UC Berkeley

Medical School

University of Vermont

Residency Training

Internal Medicine Kaiser Permanente LAMC

I am originally from Taiwan and obtained my bachelors at UC Berkeley and MD at the University of Vermont College of Medicine. In 2019, I joined the staff as a hospitalist after completing my residency here at KP LAMC in internal medicine. Having been a benefactor and recent graduate of our training program, I truly believe we offer a unique training experience. Paralleling our comprehensive clinical exposure is the opportunity to be involved in hospital committees and QI work to see firsthand how one of the largest integrated health systems operate. At the same time, we have access to one of the most comprehensive electronic health records for research endeavors and the opportunity to perform system-wide analyses across 15 medical centers. All these opportunities are readily available to our trainees, whether you want to just get a flavor beyond the clinicals or are interested in operations or research in the future.

Jason Gilbert, DO
Assistant Program Director, Community Engagement

Jason Gilbert, DO
Assistant Program Director, Community Engagement

Undergraduate School

Brandeis University

Medical School

Western University

Residency Training

Internal Medicine Kaiser Permanente LAMC

Fellowship Training

Community Medicine Fellowship, Kaiser Permanente LAMC

Whether it be my time as a health educator in South Africa, or as an AmeriCorps intern in the homeless neighborhoods of San Francisco, I have always had a strong passion for community medicine. I recently completed a fellowship in community medicine at KP LAMC, working as a primary care provider at a number of free clinics in east LA, and starting a STEM internship program at KP LAMC, giving high school students exposure to careers in internal medicine. Working as a general internist at KP, I have the privilege to help improve our healthcare system at both an individual and community level, while educating our diverse doctors of the future!

Vang Kou Khang, MD, MBA
Assistant Program Director, Quality Improvement and Wellness Initiatives

Vang Kou Khang, MD, MBA
Assistant Program Director, Quality Improvement and Wellness Initiatives

Undergraduate School

Stanford

Medical School

UCLA DGSOM

Residency Training

Internal Medicine Kaiser Permanente LAMC

Allison Sarmiento, DO
Assistant Program Director, Didactics and Study Plans

Allison Sarmiento, DO
Assistant Program Director, Didactics and Study Plans

Undergraduate School

UC San Diego

Medical School

Western University

Residency Training

Internal Medicine Kaiser Permanente LAMC

As a fourth-year medical student I did an internal medicine sub-internship here at KP LAMC and knew that this was where I wanted to train. I was drawn to the residency culture, supportive environment, unique patient population and integrated healthcare system. I completed my internal medicine residency in 2020 and signed on to join the hospitalist group. I am grateful to be able to care for the Los Angeles community and share my passion for internal medicine with the residents. One of the best aspects of training and working at this medical center is the opportunity and time to explore your interests, whether its quality improvement, community engagement, EID, global health, research or teaching. In my time outside the hospital, I enjoy traveling, being outside, spending time with my family and relaxing with my dog.

Mitra Kohan, MD
Assistant Program Director, Medical School Experiences

Mitra Kohan, MD
Assistant Program Director, Medical School Experiences

Undergraduate School

UC Los Angeles

Medical School

Chicago Medical School

Residency Training

Internal Medicine Kaiser Permanente LAMC

I started my journey at LAMC when I did a rotation with our medicine consult team and I knew within days of interacting with other residents, attendings and patients that I wanted to match and start my Internal Medicine residency at KP. I completed my residency at LAMC in 2021 and since then I have stayed on as an internist in a blended outpatient and inpatient practice. I enjoy this role as I get to have my panel of patients while also working with medical students and residents throughout the year in the clinic and the hospital. 

Reynaldo H. Alonso, MD
Chief of Internal Medicine

Reynaldo H. Alonso, MD
Chief of Internal Medicine

Undergraduate School

Fordham University

Medical School

Albert Einstein College of Medicine

Residency Training

Internal Medicine, Jacobi/ Einstein

I came to Kaiser in 2017 after many years as a General Internist in Private Practice in The Bronx and after many years teaching residents in the Montefiore/Einstein Internal Medicine Residency program. I love the life I have had as an outpatient internist and am always excited to share my love or general internal medicine to young doctors.

Stefanie Wu, MD
Chief of Hospital Medicine

Stefanie Wu, MD
Chief of Hospital Medicine

Undergraduate School

Cornell University

Medical School

University at Buffalo

Residency Training

Family Medicine, Kaiser Permanente LAMC

Fellowship Training

Geriatric Medicine: Kaiser Permanente LAMC

I joined the Hospitalist group after completing my residency and fellowship training here at Kaiser Los Angeles. We have the privilege of caring for patients in a high quality, patient-centered, multi-disciplinary team environment. I look forward working with residents closely in the inpatient setting and getting to know and guide them throughout their training.

Maureen Yu, MD

Maureen Yu, MD

Undergraduate School

Amherst College

Medical School

Eastern Virginia Medical School

Residency Training

Internal Medicine Kaiser Permanente, LAMC

I became a doctor to combine my dual passions for teaching and health, and I have pursued opportunities to combine both throughout my career. Before medical school, I worked as an AmeriCorps Urban fellow in an inner-city high school, and after completing residency at KP LAMC, I spent an extra year as a 4th-year Chief Resident. Currently I work as a general internist at KP and continue working with learners at all stages, including medical students and residents.