First Years

Natalie Artinian, DO

Natalie Artinian, DO

Natalie Artinian, DO, obtained her medical doctorate from Western University of Health Sciences in Pomona, CA, and completed adult psychiatry residency at Arrowhead Regional Medical Center in Colton, CA. Natalie is passionate about approaching psychiatric treatment in the humanistic tradition. In her free time, she enjoys spending time with loved ones, being in nature, learning and reading new things, exploring music and abstract art, and trying new vegan recipes.

Tyler Cottrell, DO

Tyler Cottrell, DO

Tyler Cottrell, DO completed his medical school at Western Uniersity of Health Sciences and his general psychiatry residency at Loma Linda University Education Consortium. He has a special interest in caring for those in crisis which include his volunteer work with hospice patients living with HIV/AIDS and victims of Hurricane Katrina. Within his fellowship, Dr. Cottrell has also taken on the role of promoting fellow wellness and cohesion through event coordination. He spends his free time running, hiking, and enjoying the company of his dog, Stella.

Amanda Lim, MD

Amanda Lim, MD

Originally from the Orange County area of Southern California, Amanda Lim, MD completed her undergraduate degree in Biomedical Engineering at UCI before coming to Loma Linda University for medical school. Dr. Lim contiuned her education at Loma Linda University in the general psychiatry residency program. Her research examining the effects of electromechanical reshaping of airways has been published in the Journal of Biomechanical Engineering. During medical school, she studied radiation induced cancer during proton therapy. Dr. Lim enjoys working with economically disadvantaged children within the San Bernardino County. In her free time, she enjoys reading and experimenting with different types of arts and crafts.

Bianca Rebolledo, MD

Bianca Rebolledo, MD

Bianca Rebolledo, MD began contributing to resident level education in Psychiatry as a fourth-year medical student when she spearheaded major revisions to the 2017 Ninja PRITE review. Since graduating from Loma Linda University Medical School, Dr. Rebolledo has been a strong advocate for resident and physician resiliency leading organizational level quality improvement projects to renovate work areas, the residency website, and the call schedule.  She has a special interest in teaching and the population of under 13 years of age. She enjoys thrift shopping and spending time with her husband and black lab in her spare time.

Second Years

Aaron Gilmore, DO MS

Aaron Gilmore, DO MS

Chief Fellow

Aaron Gilmore, DO is the Chief Fellow for our Child and Adolescent Fellowship. After completing his Psychiatry Residency here at Loma Linda University, he welcomed the prospect of taking an active role in developing and shaping the newly formed fellowship. During his residency, Dr. Gilmore served as the Chief Wellness Resident for Psychiatry and received the “Outstanding PGY-2 of the Year” award. Dr. Gilmore is currently working on several projects, including research on the effects of mindfulness on the attentional networks associated with ADHD, and overseeing expansion of “The Ninja’s Guide to PRITE” to include Child and Adolescent Psychiatry. Dr. Gilmore enjoys spending time with his family and friends, driving his Subaru, and coaching strength training.

Karishma Patel, MD

Karishma Patel, MD

Wellness Chief

Karishma Patel, MD grew up in Southern California. She attended the six-year accelerated B.A. / M.D. program at the University of Missouri- Kansas City. She later moved to New York City to complete her general psychiatry residency at Montefiore Medical Center/ Albert Einstein. She is now excited to be back on the west coast working with children and adolescents. She serves as our Chief of Wellness and takes a special interest is coordinating wellness activities for the program. In her free time, Dr. Patel enjoys exploring dessert shops and fun restaurants in the LA area as well as High Intensity Interval Training and Hot Yoga.

Lauren Laddaran, DO

Lauren Laddaran, DO

Outpatient Chief

Lauren Laddaran, DO grew up in the Los Angeles area but has recently lived coast to coast while receiving her education. Dr. Laddaran attended  Johns Hopkins University in Baltimore, MD, where she earned a B.A.in Neuroscience. After graduating, she worked at the Neurobehavioral Unit of the Kennedy Krieger Institute as a clinical assistant. During this time, she also obtained her Masters Degree at Johns Hopkins Bloomberg School of Public Health Science, in Mental Health. She then attended medical school at Touro University Nevada, obtaining her doctorate in Osteopathic medicine. With her interest in psychiatry, Dr. Laddaran returned to Baltimore to complete her Adult Psychiatry residency at the University of Maryland/Sheppard Pratt Hospital Program. She is now excited to extend her psychiatry interest in working with children as she completes her Child and Adolescent Psychiatry Fellowship at Loma Linda University. Outside of work, Dr. Laddaran enjoys spending time with her husband, trying to keep her plants alive, and eating delicious food at recommended restaurants in the Los Angeles area and beyond.

Samer Roumani, DO

Samer Roumani, DO

Samer Roumani, DO specializes in adult, child, and adolescent psychiatry. He has broad experience with both psychiatry and psychotherapy with a strong interest in ADHD, PTSD, anxiety, and addiction treatment (including substance abuse and video gaming) in adolescents and adults. His mission is to provide high quality personalized care to children and families using evidence-based modalities. Dr. Roumani has a passion for lifestyle and functional medicine and is always learning about new treatments and innovative and alternative ways to help his patients using a bio-psych-social model. While at Loma Linda, he’s been involved in the development of a collaborative care model, educating residents on motivational interviewing, and developing an addiction treatment clinic specifically for adolescent/transitional youth. During his free time he enjoys hiking, golf, video games, and tennis.