About Us
Our mission is to provide state-of-the-art neuropsychiatric care for all child and adolescent disorders, including those with coexisting developmental or medical conditions.
Arielle E. Rubin, MD
Child, Adolescent & Adult Psychiatrist | Neurodiversity-Affirming Care & Family-Centered Mental Health
Dr. Arielle Rubin specializes in psychiatric assessments and medication management for pediatric and adolescent patients aged 18 months to 26 years. An expert in psychiatric care for autistic individuals, she also lends her expertise to a spectrum of pediatric mental health concerns, including bipolar disorder, anxiety, PTSD, and co-existing neurological disorders. Dr. Rubin obtained her medical degree from the University of Arizona College of Medicine and completed her psychiatry residency at the University of Texas Southwestern. She followed this with a child/adolescent psychiatry fellowship at Phoenix Children's Hospital. Fluent in Spanish, she is also active in autism education and advocacy through community lectures, autism parent support groups, her blog at ariellerubinmd.com, and her Instagram, @ariellerubinmd. Dr. Arielle Rubin also holds a Faculty Position as Assistant Clinical Professor, Division of Psychiatry and Child Health at the University of Arizona College of Medicine – Phoenix. She holds an Autism Specialist certification through IBCCES.
Mark L. Rubin, MD
Child, Adolescent & Adult Psychiatrist | Developmental Disabilities & Complex Psychopharmacology
Dr. Mark Rubin is the medical director of Rubin Center Psychiatry, and has over 40 years of experience providing expert psychiatric care to children, adolescents, and college youth, from ages 5 to 20. He specializes in complex psychopharmacology and Autism mental health management. His interests are in Autism care, developmental disorders, and all major child/adolescent psychiatric disorders. He graduated from Columbia University Medical School, and completed his residency in adult psychiatry and child and adolescent fellowship at at Harvard’s Beth Israel Deaconess Medical Center. He then completed an additional specialty fellowship in Developmental Disability Care at Massachusetts Mental Health Center. Dr. Mark Rubin has extensive experience in crisis stabilization, foster care needs, and different levels of care including prior medical director positions at inpatient hospitals, residential treatment centers, adolescent and adult developmental group homes, and served as prior medical director at the Arizona Department of Developmental Disabilities (DDD).
Alicia Halbert, DO
Adolescent and College Age Youth | General Adult | Women's Mental Health Psychiatrist | Addiction Psychiatry
Dr. Alicia Halbert is a board-certified adult psychiatrist specializing in adolescents and young adults (13+), women’s mental health, and addiction psychiatry. She provides patient-centered, trauma-informed care for adults’ individuals navigating mood, anxiety, and life-transition challenges.
Dr. Halbert assesses and treats general adult patients for a wide range of psychiatric concerns, including depression, anxiety, bipolar spectrum disorders, OCD, trauma-related disorders, ADHD, and early psychosis.
Dr. Halbert also has advanced training in reproductive and hormonal mental health, treating women through pre-pregnancy, perinatal, and postpartum mood and anxiety disorders, PMDD, infertility-related distress, and the emotional impact of pregnancy loss or child illness. She also provides care during lactation, perimenopause, and menopause, helping women manage the complex emotional and physical changes that accompany each stage.
She has a special interest in adolescent and young adult psychiatry, focusing on the developmental and emotional needs that emerge during this stage. Her approach with adolescents and young adults emphasizes emotional regulation, identity development and independence goals, academic stressors and executive functioning/ADHD needs. Dr. Halbert is also deeply committed to addiction psychiatry, bringing nearly 20 years of experience helping individuals reach and sustain recovery.
She earned her medical degree from Western University of Health Sciences in Los Angeles and completed her adult psychiatry residency at the University of Arizona College of Medicine – Tucson. Dr. Halbert is a member of Postpartum Support International.
Outside of work, she enjoys spending time with her family, traveling, and reading.
Nicholas R. Ahrendt, MD
Dr. Nicholas R. Ahrendt, MD
Adolescent and Adult Psychiatrist | Addiction Medicine Specialist | Mental Health Leader in Arizona
Dr. Nicholas R. Ahrendt is a dual board-certified physician in Psychiatry and Addiction Medicine, with experience in both private practice and public mental health care settings. He specializes in the treatment of mood disorders, trauma-related conditions, and substance use disorders, using an integrative, evidence-based approach to psychiatric care.
Dr. Ahrendt currently serves as President of the Arizona Psychiatric Society and is Associate Faculty for the University of Arizona-Tucson Psychiatry Residency Program, where he helps train the next generation of psychiatrists.
Before joining Rubin Center Psychiatry, Dr. Ahrendt was the Associate Medical Director at Sierra Tucson, a nationally recognized residential treatment center for trauma, addiction, and complex mood disorders.
He is known for his thoughtful, collaborative approach and commitment to advancing high-quality mental health care in Arizona. Outside of work, Dr. Ahrendt enjoys bicycling and traveling with his wife.
Jennifer Sorg, PMHNP-BC
Board-Certified Pediatric and Adult Psychiatric Mental Health Nurse Practitioner | Veteran | Trauma-Informed Mental Health Care|
Jennifer is a board-certified psychiatric mental health nurse practitioner (PMHNP-BC) with over 20 years of experience in clinical practice.
Jennifer offers comprehensive psychiatric evaluations, medication management, supportive therapy, and crisis intervention for children, adolescents, and adults. She has practiced in outpatient mental health and integrated primary care settings, including pediatric care environments, where she developed a holistic, team-based approach to psychiatric treatment. She served in the U.S. Army both as a combat medic and later as a psychiatric nurse practitioner, providing compassionate mental health support to service members, veterans, and their families. She is experienced in coordinating care across systems and offering clinical support tailored to both youth and adults.
Her clinical expertise includes treating ADHD, depression, bipolar disorder, generalized anxiety, PTSD, and trauma-related disorders. She is also experienced in addiction treatment, autism spectrum care, and women’s mental health.
She values clear communication, patient education, and coordination with families and therapists to create individualized, sustainable treatment plans that support long-term growth and well-being.
Aura Villamil-Rubin, PhD
Licensed Clinical Psychologist | Autism & Developmental Disabilities Specialist | Offers Spanish-Speaking Services
Dr. Aura Villamil-Rubin is a seasoned licensed clinical psychologist specializing in psychological evaluations and therapy for children, adolescents, and adults. She is known for providing culturally sensitive, neurodiversity-affirming care to diverse families throughout Arizona communities.
Dr. Villamil-Rubin’s diagnostic expertise includes comprehensive psychological testing for autism spectrum disorder, developmental disabilities, learning disorders, ADHD, mood disorders, personality disorders, and trauma-related conditions. She also conducts diagnostic evaluations for immigration-related services. Her deep understanding of cultural and linguistic contexts makes her a trusted clinician for immigrant families.
Her therapeutic experience includes treating emotional dysregulation, trauma, social skill difficulties, and complex family dynamics. Her background includes more than two decades serving as a bilingual school psychologist, where she advocated for inclusive services and accommodations.
Dr. Villamil-Rubin earned her PhD doctoral degree in clinical and educational psychology from Northeastern University.
Jennifer Micue, LCSW
Jennifer is a licensed therapist and clinical supervisor through the Arizona Board of Behavioral Health Examiners. She is deeply committed to supporting neurodivergent individuals—especially children, teens, young adults, and their families—through trauma-informed, neurodiversity-affirming care.
She has extensive experience working with clients who have co-occurring medical needs, drawing from her background in integrative primary care. Jennifer also provides care navigation and therapeutic support to autism families, helping them manage complex emotional and developmental challenges. She is a Certified Autism Spectrum Disorder Clinical Specialist and trained in ADOS-2.
As an experienced grief counselor, Jennifer works with individuals coping with all types of loss. She has advanced training in maternal mental health, including support around pregnancy, postpartum adjustment, infertility, miscarriage, and infant loss.
Jennifer uses a person-centered approach grounded in Cognitive Behavioral Therapy (CBT) and Solution-Focused Brief Therapy (SFBT). Known for her creative use of visual supports and her warm, direct style, she creates a safe and welcoming space for clients—especially those new to therapy or recovering from a previous negative experience.
Outside of work, Jennifer enjoys spending time outdoors, being with her family, and exploring local coffee shops. A favorite reminder she shares with clients: “When you say yes to something, you are saying no to something else.”
Dani Misiak is a Licensed Professional Counselor and Certified Autism Specialist with deep expertise in treating a wide range of complex mental health conditions across children, teens, and young adults. She is especially skilled in working with mood disorders such as pediatric depression, anxiety, bipolar disorder, early-onset psychosis, PTSD, and personality disorders. In addition, Dani has specialized training and experience supporting neurodivergent individuals, with a clinical focus on autism and ADHD.
Her background includes residential treatment centers with youth navigating severe emotional challenges, and extensive work with trauma survivors. Dani also provides therapy for youth with problematic sexual behavior, offering a safe, structured space to process trauma and build healthy, respectful relational skills.
Dani is trained in a broad range of evidence-based therapies, including Applied Behavior Analysis (ABA), play therapy, Dialectical Behavior Therapy (DBT), and Trauma-Focused Cognitive Behavioral Therapy (TF-CBT). Her developmentally sensitive approach supports clients with emotion regulation, behavioral difficulties, and social interaction challenges.
Dani provides therapy for college-aged individuals and young adults navigating identity, relationships, and academic pressure. She also offers parent, couples, and family therapy, helping families build resilience, reduce stress, and strengthen connection.
Dani Misiak, LPC
Sandra is a psychiatric nurse with over 10 years of experience supporting children, adolescents, and adults across outpatient, residential, and crisis-care settings. She oversees nursing services and care coordination, ensuring patients receive timely, clinically informed support.
At Rubin Center Psychiatry, psychiatric nursing provides an essential layer of accessible, between-visit care. Working closely with our doctors, Sandra offers medication education, dosing clarification, side-effect monitoring, and assistance with pharmacy issues, labs, and prior authorizations—helping treatment plans move forward without interruption.
She also plays a key role in early detection and symptom monitoring, identifying side effects, safety concerns, or mood changes before they escalate. Through nursing visits and ongoing guidance in between appointments, Sandra brings continuity, reassurance, and true wrap-around support, making daily psychiatric care smoother, safer, and more responsive for every patient we serve.
Sandra Spillman, RN, Psychiatric Nurse Specialist
Practice Manager, Registered Medical Assistant
Mirella “Jasmin” is a bilingual healthcare professional with a Bachelor’s Degree in Healthcare Administration and dual certification as a Registered Medical Assistant (RMA). With more than 15 years of experience in outpatient care, practice management, and insurance billing and coding, she brings both clinical and administrative expertise to The Rubin Center. Her leadership ensures that every family receives timely support, clear communication, and a seamless experience from the moment they contact the practice to the completion of their visit.
Mirella “Jazmin” Gonzalez, RMA
Lead Medical Assistant
Becca graduated from the Arizona College Medical Assistant Program in 2013 and brings over 10 years of hands-on experience in health care and family medicine. She joined Rubin Center Psychiatry in 2023 and leads our clinical medical assistant team, playing a central role in our day-to-day clinical operations.
As a Clinical Medical Assistant, Becca specializes in care coordination, insurance navigation, and medication support. She is highly skilled in managing prior authorizations, communicating with pharmacies, and helping families understand insurance requirements—making psychiatric treatment easier and more accessible for our patients.
Becca is also certified to administer medications, including in-office injectable psychiatric medications, and provides vital support with vitals, medication reconciliation, and safety checks during patient visits. Her calm, organized approach helps ensure that every visit runs smoothly and that families feel informed and supported.
Becca Baker, MA
Yasmin Roman
Administrative Assistant
Yasmin provides administrative support, including scheduling, with a focus on assisting Dr. Aura Villamil's therapy patients and those undergoing psychological testing and therapy.
Rubin Center Psychiatry currently accepts Blue Cross Blue Shield, Aetna, Cigna, and UnitedHealthcare/Optum commercial insurance plans.
Please note that we do not accept AHCCCS or Medicaid/Medicare plans
For patients who are out-of-network or prefer not to use insurance, we offer affordable self-pay options.