Gregory Miller, DO

Matthew is a board-certified psychiatric mental health nurse practitioner and received his education in this specialty at Maryville University of St. Louis, Missouri.  He has been working in the mental health field for over 20 years and has provided care to patients in diverse care settings including psychiatric hospitals, outpatient mental health centers, psychiatric home health, and telepsychiatry.  Matthew is passionate about expanding access to high quality mental health care to all in need and greatly enjoys collaborating with patients from diverse backgrounds.  In his free time, he enjoys hiking, camping, reading, traveling, and searching for the best Mexican food around.  

Patients working with Matthew should know that he utilizes a very collaborative approach to patient care.  He does not assume that he knows what's best for patients but works closely with them to find the most appropriate and effective treatment plan for the unique individuals that he treats.  For Matthew, safety is always the first priority, but he does not believe in a "one size fits all" approach to mental health care and is focused on tailoring the treatment to the patient.  Matthew utilizes an empathic approach to mental health treatment and patients will feel heard and valued.  

Matthew's process for working with patients includes a thorough psychiatric evaluation at the initial appointment to make sure we are getting to the right diagnosis and remaining on track to improve the patient's mental health. Follow-up appointments are focused on monitoring for progress or regression and working collaboratively to meet mutually agreed upon goals. Collaboration is key!

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Melissa Sims, MSN, APRN, PMHNP-BC, is a board-certified psychiatric mental health nurse practitioner who is passionate about delivering high-quality, compassionate, and comprehensive mental health care. She earned her Master of Science in Nursing from the University of Alabama at Birmingham in 2022 and has since worked in both community mental health and correctional settings.

Melissa takes a collaborative approach to care, working closely with other mental health professionals, medical providers, families, and relevant support systems to ensure well-rounded treatment. She emphasizes a patient-centered, individualized approach, combining medication management with psychotherapy to meet each person’s unique needs.

Patients working with Melissa can expect a thorough evaluation, accurate diagnosis, and a personalized treatment plan tailored to their mental health goals. One of her core priorities is to empower individuals to make informed decisions about their care by providing education grounded in research, evidence-based practices, and clinical experience.

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David Arabie is a licensed professional counselor and certified tobacco treatment specialist with extensive experience working in the mental health field. David has worked directly with clients from various demographics and in various clinical settings, from inpatient hospitals, outpatient clinics, private practice, to working with the incarcerated. David has a long history of working with clients with an array of mental health conditions and challenges, from mood disorders, adjustment-related issues, addiction, family dynamics, relationship issues, emotional trauma, behavioral issues, anger management, and clinical anxiety and depression. He has a working knowledge of psychotropic medications to help with med-compliance and treatment barriers. David obtained undergraduate and graduate degrees from the University of Houston Clear Lake in Houston, Texas. David has been practicing as an LPC for 19 years but has also worked as a Licensed Chemical Dependency Counselor before obtaining his LPC. Working with David, treatment is tailored to the individual, so the goals of therapy can be met, and the client can experience a sense of vested interest in their own emotional contentment and growth. David uses an eclectic approach to therapy, with a strong foundation in Solution-Focused Therapy, Cognitive-Behavioral Therapy, and Rational Emotive Behavioral Therapy. Personally, David is a musician, community theater actor, educator, coach, and swim official.‍

Dr. Dhaliwal is an integrative psychiatrist with an MPH, a 1-year fellowship through Psychiatry Redefined, as well in intensive inpatient and outpatient training. A Boston University School of Medicine graduate and former Chief Resident at FAU, she blends research-based care, emotional insight, and life optimization. She treats depression, bipolar, anxiety, ADHD, PTSD, substance use, and psychotic-spectrum disorders with a holistic, results-driven approach.

Dr. Dhaliwal works with individuals who feel stuck—functioning on the outside but "not like myself" inside. Her warm, structured, and research-driven approach combines medication when needed with integrative tools such as CBT, lifestyle changes, "24-hour approach", and a bio-psycho-social-spiritual lens. She focuses on root causes and helps individuals gain clarity, momentum, and purpose to function at their highest level across home, career, and life.

Dr. Dhaliwal begins with a 360-degree assessment exploring emotional patterns, routine, physical health, neurobiology, and values. Her 24-hour optimization model supports intentional living, clarity, and structure. She fine-tunes medications and augments with an integrative tools to enhance mood, resilience, and wellbeing. Her care is shaped by years in psychiatry and over a decade of coaching future physicians, researchers, and life coaches to reach their highest academic and career potential.

Dr. Kirk Carruthers is a board-certified psychiatrist with experience in both outpatient and inpatient psychiatry, as well as addiction medicine. He completed his medical degree at Morehouse School of Medicine and trained at University Hospitals – Case Medical Center, where he completed general psychiatry residency and fellowships in addiction and community psychiatry. His experience includes roles in community mental health, academic teaching, and the VA system. Outside of work, he enjoys music production, soccer, spending time with loved ones, and all dogs.

Dr. Carruthers brings a casual, easygoing communication style to create a comfortable space where patients feel at ease. He emphasizes forming strong therapeutic bonds based on trust, and combines supportive therapy with medication management. He encourages collaboration with therapists and uses evidence-based treatment approaches tailored to each individual’s needs.

Dr. Carruthers begins with a thorough understanding of each patient's concerns, history, and goals. He then creates a personalized treatment plan and works collaboratively with the patient to reach their goals, adjusting care as needed for ongoing progress.

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Dr. Erica Mark is a board-certified psychiatrist with experience in both inpatient and outpatient care. She formerly served as a Staff Psychiatrist at a VA Medical Center, where she specialized in the mental health needs of veterans. Dr. Mark earned her B.S. in Biological Sciences, Summa Cum Laude, from Hampton University, received her MD from the University of Texas Medical Branch, and completed her psychiatry residency at Tulane University School of Medicine, serving as Chief Resident in 2017.

Dr. Mark fosters a warm, supportive environment where patients feel heard and respected. She values open communication and works collaboratively to set clear, personalized treatment goals. Deeply committed to service, she has supported underserved and marginalized communities through various nonprofit initiatives.

During initial sessions, Dr. Mark takes time to understand each patient’s history, concerns, and goals. She then creates individualized treatment plans aligned with each patient's unique needs and preferences. Dr. Mark encourages ongoing dialogue to adapt care plans and support long-term progress.