Meet Our Providers

Dr. Yang Xu, MD
Dr. Xu is board certified to treat Adult, Child, and Adolescent population in both English and Mandarin. Her research and clinical training was from Columbia University, Mount Sinai-Beth Israel, and Washington University in St. Louis.

Dr. Sarah Jillani, MD
Dr. Jillani is board certified in treating Adult, Child and Adolescent population in English, Urdu/Panjabi. Her clinical training was from Yale Child Study Center and Connecticut School of Medicine.

Dr. Ann Chen, MD
Dr. Chen is a child, adolescent, and adult psychiatrist fluent in English, Cantonese, and Mandarin. She completed medical training at UCLA, residency at California Pacific Medical Center, and finishing her child and adolescent psychiatry fellowship at UCSF.

Dr. John Kelsey, MD, JD
Dr. John Kelsey is double board certified in Psychiatry and Neurology. He completed his medical training at the University of Minnesota, followed by residency at Harbor-UCLA and California Pacific Medical Center.

Dr. Oriana Vesga-Lopez, MD
Dr. Vesga-Lopez is English/Spanish bilingual psychiatrist. She received her research and clinical training in Columbia University and Massachusetts General Hospital (MGH) in affiliation with Harvard Medical School.

Dr. Eileen Wu, MD, PhD
Dr. Wu is a board certified English/Mandarin bilingual adult psychiatrist. She completed her residency in Psychiatry at Washington University-St Louis. She has been in practice for more than 20 years.

Dr. Haley Stephens, MD, MPH
Dr. Stephens is a bilingual English/Spanish psychiatrist. She received her medical education at Tulane University School of Medicine and completed her residency at Harbor-UCLA.

Dr. Yen Luu, MD
Dr. Kieu-Yen Luu, M.D. received her medical degree from the University of California, Davis, completed her psychiatry residency at Harbor-UCLA, and pursued a fellowship in forensic psychiatry at the University of Southern California.

Dr. Isabel Yin, MD
Dr. Isabel Yin received her medical degree from the University of Chicago, completed her psychiatry residency at Harbor-UCLA, and pursued a fellowship in forensic psychiatry at the University of Southern California.

Dr. Huiqi Tong, PhD
Dr. Hui Qi Tong is a Clinical Professor of Psychiatry and Behavioral Sciences at Stanford University who provides psychotherapy and mindfulness-based programs for individuals facing anxiety, trauma, burnout, and life transitions.

Mark Mattek, LPCC
Mark Mattek is a Licensed Professional Clinical Counselor. He obtained his Master of Science in Counseling degree from the University of Phoenix, and in 2020 completed additional graduate coursework in trauma counseling at California State University – Fullerton.

Celine Hsieh, LMFT
Celine Hsieh is a Licensed Marriage and Family Therapist with a Master’s Degree in Art Therapy from Notre Dame de Namur University. She specializes in expressive arts therapy.

Fan Wu, AMFT
Fan Cindy Wu works with individuals, couples, and families across diverse cultural and relational contexts. She earned her Master’s degrees from Stanford University and Santa Clara University.

