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Our Team

Masa Fisher, MD


Masa Fisher is a board certified psychiatrist who has worked at our San Francisco-based Homeless Youth Alliance (HYA) program since 2009.  “Dr. Masa” brings over 15 years of experience working in public health settings and serving the mental health needs of homeless individuals.  He provides individual assessments and medication support while being a tireless advocate for the needs of homeless youth.  A San Francisco native, he often expresses his satisfaction “helping the community where I grew up.”  In addition to his work at HYA, he works in a dual-diagnosis community mental health clinic in San Francisco and is an Assistant Clinical Professor of Psychiatry at University of California, San Francisco where he was recently awarded the prestigious Haile T. Debas Academy of Medical Educators “Excellence in Teaching” Award.

Jennifer Birch, Nurse Practitioner (Referral Partner)


We refer to and work closely with Jennifer Birch, a board-certified psychiatric-mental health nurse practitioner who has a private practice in Berkeley. She has 14 years of experience working with people who are using substances in the context of depression, anxiety, PTSD, bipolar disorder, and other mental health issues. Utilizing a patient-centered approach, Jennifer provides psychiatric medication management and support to those engaged in therapy at HRTC, with an emphasis on psychoeducation and collaborative treatment planning. She is an authorized provider of buprenorphine, a medication used to treat opioid dependence.