Michelle Hornbaker-Park, MD

Dr. Patricia Klaine is an attending physician working at Talkiatry. She is board certified in adult psychiatry. After completing her training in adult psychiatry, she continued her education by completing a fellowship in consultation-liaison psychiatry, which enables her to treat patients with a variety of medical comorbidities confidently. Dr. Klaine focuses on medication management. She offers this in addition to supportive psychotherapy in 30-minute follow up visits. For some patients, it may be important to bring in additional psychotherapy for well-rounded care. Dr. Klaine received her medical degree from St. George's University in Grenada, and after that, she completed her training in general adult psychiatry at Maimonides Medical Center in Brooklyn, New York. She went on to complete a fellowship in consultation-liaison psychiatry at Mount Sinai Hospital in New York. After completing her training, she worked on an inpatient psychiatric unit before deciding to transition into outpatient psychiatric care. She looks forward to a collaborative relationship with her patients.

Dr. Elizabeth Cox is a board-certified psychiatrist with over 20 years of experience providing compassionate, evidence-based care to adults. She believes healing begins with being heard and strives to create a supportive, nonjudgmental environment where patients feel comfortable sharing their experiences and working toward meaningful change.

Dr. Cox takes a collaborative approach to mental health, considering biological, psychological, social, and environmental factors. She values empathy, curiosity, and respect, and partners with patients to explore treatment options that align with their goals, including therapy, medication, and lifestyle changes.

Your first visits with Dr. Cox will focus on understanding your history, challenges, and treatment goals. Together, you will develop a personalized plan that is manageable, supportive, and grounded in trust. She ensures each patient feels safe, respected, and truly heard throughout the care process.

Dr. Kathryn Bertacchi is board-certified in both adult and child & adolescent psychiatry. Originally from California, she earned her medical degree from University College Cork in Ireland and completed residency and fellowship at Emory University. She has practiced in varied settings, including developing specialized clinics in eating disorders and gender-affirming care. She is a member of several professional organizations including AACAP, APA, and WPATH.

Dr. Bertacchi fosters an inclusive, nonjudgmental environment where patients feel safe to be themselves. She approaches care with curiosity, compassion, and deep respect for each person’s unique story, aiming to help individuals feel genuinely heard and supported throughout their treatment journey.

In early sessions, Dr. Bertacchi works collaboratively to understand patients' lives, goals, and challenges. While her focus is medication management, she integrates cognitive-behavioral, humanistic, and supportive techniques. She may recommend additional therapy as needed and particularly values working with youth and adults from diverse backgrounds.

Patricia Grendell is a board-certified Psychiatric-Mental Health Nurse Practitioner who provides mental health care using a personalized, holistic approach. Patricia specializes in psychiatric evaluation and medication management along with psychotherapy and integrative interventions. Prior to receiving education and training in Nursing at New York University and Case Western Reserve University, Patricia earned a Master of Social Work from Boston College with a focus on health and mental health.  

Patricia specializes in working with adults experiencing a wide range of acute and chronic stressors and mental health symptoms. Patricia tailors' treatment to the goals, needs, and comfort level of each individual at her or his own pace. Patricia builds connections with patients so that they feel heard and understood, and partners with each individual to determine the most appropriate treatment strategies that maximize comfort, safety, and positive results.  

Over the past ten years as a Nurse Practitioner in outpatient and inpatient environments, Patricia has helped patients improve and overcome conditions including depression, anxiety, OCD, PTSD, ADHD, and insomnia. Using a combination of medication management, individual therapy, and psychoeducation, Patricia develops individualized treatment plans centered around patients’ priorities and safety to achieve improvements in health and quality of life.

Dr. Jiang is a board-certified adult psychiatrist. His practice focuses on medication management and supportive therapy. His major goal is for treatment to be patient centered, with a focus on high quality, evidence-based care in the safest and most meaningful way. Dr. Jiang completed an undergraduate degree at the University of California, Los Angeles. He received his medical degree from Oakland University William Beaumont, School of Medicine. He then completed his psychiatry residency at Loyola University Medical Center. Dr. Jiang's areas of interest include depression and post-traumatic stress disorder.‍

Shanika is a dedicated and compassionate board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) with over a decade of experience in the mental health field. She holds a Bachelor of Science in Nursing, a Masters in Nursing Education, and a Post-Master’s Certificate as a Family Psychiatric Nurse Practitioner. Shanika is known for her patient-centered approach, prioritizing empathy, respect, and individualized care. She is committed to building strong therapeutic relationships grounded in trust and open communication.

New patients can expect a warm, non-judgmental environment where they feel heard and supported. Shanika collaborates closely with each patient to create personalized treatment plans, helping them feel empowered in their mental health journey.

Shanika begins with a comprehensive psychiatric evaluation to understand each patient’s history, symptoms, and goals. Her treatment may include medication management, supportive therapy, and psychoeducation. She specializes in anxiety, depression, bipolar disorder, ADHD, trauma/PTSD, mood disorders, and women’s mental health. Shanika has extensive experience providing care for both adolescents and adults in outpatient settings, with a particular focus on underserved communities.

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