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Addiction Inpatient Medicine (AIM)

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Clinical Assistant Professor, Psychiatry and Behavioral Sciences
Zenia Cardoza, CADCII, ICADC
Substance Use Navigator

Bio

Zenia Cardoza has been working in the addiction treatment field for over 15 years primarily in Santa Clara County after entering recovery, nearly 20 years ago. Zenia works as a Substance Use Navigator (SUN) in the Emergency Department, a role that was started in partnership with the CA Bridge Program. Zenia’s work has paved the way for Stanford’s Emergency Dept to provide low barrier access to Medication Assisted Treatment (MAT), real-time linkage to substance use treatment programs and harm reduction interventions such as take-home naloxone. She provides compassionate and non-judgmental care to all patients and families visiting the emergency department. Zenia is a strong advocate for improving care for individuals living with substance use disorders. She was awarded the CD Role Outpatient Counselor for Professionalism by SJCC ADS Advisory Board in 2018 and the Community Hero Award by Santa Clara County Behavioral Health Board in 2022.

Clinical Assistant Professor, Psychiatry and Behavioral Sciences

Bio

Dr. Huiqiong Deng is a clinical assistant professor of psychiatry. In addition to a medical degree, she earned a PhD, with a major in rehabilitation science and a minor in neuroscience. Specializing in the treatment of alcohol/substance addiction, interventional and cultural psychiatry, her goal is to help each patient along the journey to achieve optimal health and quality of life. As the co-author of more than a dozen scholarly articles, Dr. Deng’s work has appeared in Psychiatry Research, Journal of Studies on Alcohol and Drugs, American Journal on Addictions, Brain Stimulation, and other publications. Dr. Deng has won numerous honors and awards such as the National Institute on Drug Abuse Young Investigator Travel Award, the Ruth Fox Scholarship from the American Society of Addiction Medicine, and College on the Problems of Drug Dependence Travel Award for Early Career Investigators. In addition, she was selected to attend the Annual American Psychiatry Association Research Colloquium for Junior Investigators. Since she joined faculty at Stanford, Dr. Deng has received research grant support by the Department of Psychiatry and Behavioral Sciences Innovator Grant Program.
Stacy Hampton, SUDCC III- CS
Substance Use Navigator

Bio

Stacy has been part of the recovery/treatment movement since she was a little girl in East Palo Alto, attending AA and NA 12 step meetings with her father. She started her own recovery journey over 25 years ago.  Stacy has been working in the addiction field for over two decades. Her primary treatment focus has been supporting adults with opioid use disorder by engaging them with motivational interviewing counseling techniques.  Stacy has had the privilege to work with clients in inpatient, detox and residential treatment settings. She volunteers with her church community helping the homeless with food and clothing. She has participated in H&I (Hospitals and Institutions), bringing AA meetings into jail and hospital settings.  

Ashley Hartoch, LCSW, ACM
Complex Care Manager

Bio

Ashley Hartoch is a licensed clinical social worker and accredited case manager. She earned her Master of Social Work from San Jose State University and a bachelor’s in psychology at UC Santa Cruz. Ashley specializes in addiction treatment and is passionate about improving access to care. She has facilitated conference presentations focusing on creative interventions in the acute care setting for high-risk patients. Ashley was the recipient of the Social Work Leadership in Health Care’s Eleanor Clark Award for Innovative Programs in Patient Care in 2017. Prior to working with the Addiction Inpatient Medicine team, Ashley worked on Stanford’s inpatient psychiatry units, psychiatric emergency room, and psychiatric consult liaison service.

Clinical Assistant Professor, Psychiatry and Behavioral Sciences
Alicia Ludlow
Peer Support Specialist

Bio

Alicia Ludlow is a peer support specialist with the Addiction Inpatient Medicine Service at Stanford Health Care. Alicia started as a peer mentor with National Alliance on Mental Illness (NAMI) and began working at Stanford Health Care as a peer support specialist in September 2021. Alicia utilizes her lived experience of mental illness and addiction to support patients on their journey of recovery. While meeting patients in the hospital and supporting them after discharge, Alicia helps patients discover their strengths that lead to long term sobriety. She is active in the recovery community and is a devoted advocate for sobriety and wellness.

Charlie Porzio
Volunteer Peer Support Specialist

Bio

Charlie Porzio is a volunteer peer support specialist with the Addiction Inpatient Medicine Service at Stanford Health Care. Charlie started as a peer mentor with National Alliance on Mental Illness (NAMI) and began volunteering at Stanford Health Care as a peer support specialist in March 2021. Charlie utilizes his lived experience of mental illness and addiction to support patients on their journey of recovery. While meeting patients in the hospital and supporting them after discharge, Charlie also volunteers, bringing AA meetings in to jails and institutions. He is active in the recovery community and is a devoted advocate for sobriety and wellness. Charlie has been substance free since March 1,1986.

Clinical Assistant Professor, Psychiatry and Behavioral Sciences

Bio

Dr. Steven Tate serves as a Clinical Assistant Professor specializing in addiction medicine within the Department of Psychiatry & Behavioral Sciences at Stanford University School of Medicine. He earned his medical degree from the University of Chicago and completed his internal medicine residency at the University of Pennsylvania. He then successfully completed a fellowship in addiction medicine at Stanford. With a Master's in medical statistics from the London School of Hygiene & Tropical Medicine, Dr. Tate brings a rigorous and evidence-based approach to his work. Dr. Tate sees patients in the Stanford Dual Diagnosis Clinic, providing comprehensive care for individuals with co-occurring mental health and substance use disorders. He also attends on the inpatient addiction medicine consult service, where he offers guidance to healthcare professionals on complex addiction-related cases. Driven by his dedication to improving care for patients with substance use disorders, he focuses his work on educating future addiction professionals and translating evidence into practice.
Clinical Associate Professor, Psychiatry and Behavioral Sciences

Bio

Dr. Amer Raheemullah, MD, is Associate Clinical Professor of Psychiatry and Behavioral Sciences. He specializes in the treatment of addictive behavior, has published chapters and peer-reviewed articles in this area, and is Director of the Addiction Inpatient Medicine Service at Stanford Hospital. He is board-certified in Addiction Medicine and Internal Medicine.