Our Team

Dr. Michelle Guchereau


Dr. Guchereau specializes in the psychiatric evaluation, complementary therapy approach, and medical management of children, adolescents and adults in San Francisco, CA. She has been certified by the American Board of Psychiatry and Neurology in both general psychiatry and child and adolescent psychiatry. Dr. Guchereau has over a decade of experience as a psychiatric clinician, and earned her Medical Doctorate at the prestigious University of California, San Diego, School of Medicine.

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She served in the US Air Force and was awarded the Air Force Achievement Medal for her support of active duty military and their family members all over the world.

Dr. Guchereau specializes in the evaluation and treatment of the attention issues (ADD/ADHD), depression and anxiety. She is committed to providing specialized and individualized service, and a comprehensive treatment plan is created for each patient. She is experienced in multiple modalities of psychotherapy, including psychodynamic psychotherapy, cognitive behavioral and mindfulness-based approaches.

She tailors each psychotherapeutic and medication intervention to the individual patient and issues presented, taking care to understand and work within the framework of psychological, social and biological factors unique to each individual.


Erik Lee​



Prior to becoming a PMHNP, Erik spent several years as a psychiatric registered nurse (RN) at the Zuckerberg San Francisco General Hospital’s Psychiatric Emergency Services (PES) and acute psychiatric and forensic inpatient units (7B, 7C, 7L); and the San Francisco VA Medical Center’s Psychiatric Intensive Care Unit (PICU). In these settings, he performed a variety of

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roles, including charge nurse, triage nurse, and floor nurse. On behalf of the VA, he co-presented at the American Psychiatric Nurses Association’s (APNA’s) 2014 national and 2015 California chapter Annual Conferences on the topic:Transforming to a recovery-oriented system of care in an psychiatric ICU:  The risks, the rewards, and the role of nursing. From 2013 to 2015, Erik also worked as adjunct clinical instructor for Samuel Merritt University, teaching Mental Health Nursing (N534) for Masters of Science in Nursing students and supervising them during their clinical rotations at St Francis Memorial Hospital’s inpatient psychiatric unit.

Since becoming a PMHNP, Erik has worked in high-volume settings with varied patient populations in San Francisco. From 2014 to 2018, he was the psychiatric provider at the Felton Early Psychosis Program (formerly called the Prevention and Recovery in Early Psychosis (PREP) program). At PREP, Erik managed the medication needs of young people experiencing their first psychotic or manic episodes, as well as clients considered to be at high risk of developing psychotic and bipolar disorders.

From 2014 to 2017, Erik worked as a psychiatric consultant at Progress Foundation’s transitional residential treatment centers, ensuring that residents receive continuity of psychiatric care. These include their Senior’s Program, which focuses on seniors (age 60 or over) with psychiatric or social adjustment problems, and Cortland House, a 90-day residential treatment program for adults with psychiatric and co-occurring (formerly dual-diagnoses) conditions.

Since 2015, Erik has worked at Westside’s Outpatient and Crisis Clinics. There, he provides medication management and crisis services to uninsured, low-income, and/or indigent clients with a wide variety of psychiatric conditions, including psychotic, major mood, anxiety, insomnia, trauma-related, and attention deficit/hyperactivity disorders; personality disorders, traumatic brain injuries, and co-occurring substance use disorders.


Erik completed a Post-Masters PMHNP program at the University of California, San Francisco (UCSF) with a GPA of 4.0. He was a recipient of a Gero-Psychiatric Stipend. He completed his PMHNP residency at UCSF’s Langley Porter Psychiatric Institute’s Consultation-Liaison Services, supporting the management of patients with mental disorders who have been admitted for the treatment of medical problems at UCSF Medical Center’s emergency room and inpatient units.

Erik earned a Masters of Science in Nursing degree from Samuel Merritt University, Oakland, CA, graduating summa cum laude. His thesis is entitled Nurse Care Coordination Program for Early Intervention for First Episode Psychosis.


2012 APNA Ortho-McNeil Janssen Scientific Affairs, LLC Student Scholarship awarded to the “outstanding graduate nursing student who has demonstrated a commitment to psychiatric mental health nursing”

  • Kindred Healthcare Scholarship
  • SMU Nursing Scholarship
  • T&R Scott Scholarship
  • Sigma Theta Tau (nursing honor society)

Erik holds Bachelors of Arts degrees in Human Development (Adult & Gerontology) from California State University, East Bay (summa cum laude), and in Sociology and European Studies from the National University of Singapore.


  • Institute of Functional Medicine,
  • American Psychiatric Association Annual Conferences,
  • Master Psychopharmacology Program with the Neuroscience Education Institute,
  • Various intensive workshops on cognitive behavioral therapy, motivational interviewing, and integrative medicine


In setting up a private practice, Erik hopes to bring his clinical skills to bear, covering crucial gaps in the needs of San Francisco residents needing mental health services.

Erik splits his time between San Francisco and San Diego. He lives with his husband Tom, and their dog Nemo. He enjoys gardening, traveling, and reading non-fiction books. A native of Singapore, Erik has lived in the Bay Area for 20 years.


Brea Di Dato


Brea Di Dato is an experienced Family Nurse Practitioner who has completed a Post- Master’s Certificate in Psychiatry. She spent over a decade providing care in acute settings, such as critical care and oncology, before transitioning to primary care in 2017.

Since her transition to Nurse Practitioner in primary care she has been diagnosing and treating mental health disorders in an outpatient setting. Because she is also trained as

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a primary care provider, she understands the critical link between physical and mental well-being.​ She is adapt at identifying underlying medical conditions and mental health disorders.

She has experience treating:
• Depression
• Bipolar disorders
• Anxiety disorders


Jon May


Jon May is an ANCC board-certified Psychiatric Mental Health Nurse Practitioner. He is a passionate mental health advocate focused on providing compassionate evidenced-based care while employing the latest innovations in psychiatry. Jon completed psychiatric internships at Well Coast and in Santa Clara public health clinics, where, working alongside multi-disciplinary teams, he treated clients with chronic mental illness and complex medical diagnoses.

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Jon's vast clinical experience includes critical care, medical education, quality improvement, and healthcare informatics.  His distinct background makes him uniquely suited to support clients navigating mental health concerns in the diverse technology-focused setting of the Bay Area.  Jon is a life-long supporter of human rights and the LGBTQIA+ community, and he is deeply committed to a “whole person” approach, where mind, body, and spirit are emphasized.

Jon has expertise in evaluating and treating:

  • Attention-deficit / Hyperactivity Disorder (ADD/ADHD)
  • Mood disorders (bipolar disorder, depressive disorder, perinatal depression)
  • Anxiety disorders (generalized anxiety disorder, social anxiety, panic disorder)


Marco Oliver D. Lopez


Marco is a doctorally-prepared advanced practice nurse who is board certified as a both a Family Nurse Practitioner and a Psychiatric Mental Health Nurse Practitioner.  He brings over 12 years of experience working as a Registered Nurse in various clinical and non-clinical areas including primary & ambulatory care, medical-surgical nursing, psychiatric-mental health, clinical informatics, nursing education, and staff development. He received his training and experience in San Francisco at PRC, Progress Foundation, Zuckerberg

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San Francisco General Hospital and Training Center, and Westside Community Services.Marco values collaborative practice in promoting competent, evidence-based, and personalized care to patients and families.  A dedicated life-long learner, Marco is an adjunct faculty member at the University of San Francisco, and has earned an impressive array of academic credentials, including:

  • Doctor of Nursing Practice with a focus on Healthcare Systems Leadership (University of San Francisco)
  • Master of Science in Informatics - Health Specialization & Post-Baccalaureate Wound Care Certificate (San Jose State University)
  • Post-Master’s Psychiatric Mental Health Nurse Practitioner Certificate (University of California, San Francisco)
  • Post-Master’s Family Nurse Practitioner Certificate (Sonoma State University)
    Master of Science in Nursing (Holy Names University)
  • Master of Business Administration (Holy Names University)
  • Associate in Science in Computer Networking & Information Technology w/ emphasis in Network Security (City College of San Francisco)
  • Associate in Science in Social and Behavioral Sciences (City College of San Francisco)
Marco is our provider on staff for Saturdays in our San Francisco office.


Harman Randawa


Harman is an ANCC board-certified Psychiatric Nurse Practitioner who graduated from the University of California, San Francisco (UCSF)’s Master of Nursing program. She completed her clinical residency at the UCSF Langley Porter Institute in San Francisco and has experience working with a culturally diverse population. She has an undergraduate degree in Psychology from Canada and prior to being a psychiatric nurse practitioner, she worked as an academic advisor in a university setting. She was always passionate and interested in Psychiatry, and

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believes mental illness is a multifactorial process involving not only neuroscience but aspects of the human experience.Therefore, she believes that treatment approaches too need to be multifactorial and strives for a collaborative and holistic process in treatment planning. Her philosophy and approach to care is rooted in treating the whole person, including lifestyle, psychological, and biological factors being incorporated into each and every assessment. She strives to provide culturally informed and patient centered care tailored to each individual and values the meaningful connections made with her patients.

Harman moved from Vancouver, Canada to San Francisco in 2016, and now calls it her home. She enjoys reading, traveling, playing tennis, and has a keen interest in world history.