Anastasia Ruiz, MD

Dr. Corey Greenwald is a board-certified psychiatrist with years of experience treating patients in both acute inpatient psychiatric emergencies and outpatient medication and psychotherapy settings. He earned his medical degree from Brown University, completed his internship in the Columbia system, and pursued residency training at Mount Sinai Medical Center in New York City. Dr. Greenwald has practiced in academic, urban, suburban, and rural environments, which has given him broad perspective and adaptability in caring for diverse patient populations.

Dr. Greenwald emphasizes psychoeducation as a core part of care, ensuring patients are active participants in understanding and managing their mental health. He brings a deep interest in transcultural issues and in how social media and news cycles impact emotional well-being. Having witnessed the effects of mental illness within his own family, Dr. Greenwald approaches his work with empathy, insight, and a strong commitment to helping patients feel supported throughout their journey.

Dr. Greenwald works collaboratively with patients to define or clarify concrete treatment goals by the end of the initial appointment. He maintains a low threshold for revisiting and adjusting treatment plans if progress feels unsatisfactory, ensuring care remains flexible and effective. His informal, eclectic interpersonal style allows him to tailor his approach to each individual, fostering trust and partnership in the therapeutic process.

Dr. Khandie Graham is a board-certified psychiatrist who completed her medical training at UCLA/Drew Medical Education and her psychiatry training at University of California, San Francisco/Fresno in 2013. She has served as a psychiatrist in the United States Air Force and prior to joining Talkiatry, was an inpatient psychiatrist. Dr. Graham's practice focuses on medication management. Typically, she offers this in conjunction with supportive therapy in 30-minute follow-up visits. However, occasionally Dr. Graham may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. Dr. Graham treats all adults and specializes in depression, bipolar disorder, anxiety disorders, ADHD, and life changes. She prides herself in partnering with patients to create individualized treatment plans. Dr. Graham is a great listener and spends time with her patients.

Dr. Mathews is an adult psychiatrist who works with young adults and adults struggling with anxiety and depressive disorders. She uses a compassionate, non-judgmental, and reflective approach to listening and working with clients. Dr. Mathews' practice focuses on medication management, offered in conjunction with supportive therapy in 30-minute follow-up visits. Dr. Mathews completed medical school at Stony Brook University School of Medicine where she also earned her masters in Medical Humanities, Compassionate Care, and Bioethics. She completed her adult psychiatry residency training program at Montefiore/Albert Einstein College of Medicine. The philosophy of Dr. Mathews' practice is to help promote each individual's natural capacity for healing. She ultimately strives to help clients create rich and meaningful lives while also offering mindfulness skills to empower clients to effectively cope with the pain and suffering that life can bring.

Amanda Rivera, PMHNP, is a board-certified Psychiatric Mental Health Nurse Practitioner through the lifespan, certified by the ANCC in 2020. She earned a Bachelor of Science in Psychology with a biology minor from Clarkson University, followed by a Bachelor of Science in Nursing and a Master of Science in Nursing from St. John Fisher College. Amanda has over 15 years of experience in mental health, beginning in 2010 as a Therapy Aide at Rochester Psychiatric Center. She has practiced across inpatient hospitals, state psychiatric facilities, outpatient community clinics, correctional settings, group homes, and telehealth/private practice. She works with patients ages 16 and older and is highly experienced in trauma, mood and anxiety disorders, ADHD, autism, psychotic and personality disorders, substance use, and parenting challenges. She values working with families to strengthen the family unit.

Amanda values open communication and collaborates with patients to establish clear, meaningful treatment goals. She provides a warm, supportive environment where patients feel heard, respected, and empowered to take ownership of their mental wellness. Treatment is individualized, with medication decisions guided by a careful balance of safety and symptom relief. Appointments are conversational in nature, allowing care to be more personalized as patients share openly.

Amanda begins each visit by ensuring privacy and safety, then explores the concerns prompting care before gathering a biopsychosocial history through collaborative discussion. She provides education throughout sessions to help patients understand diagnoses and lived experiences. Medication options are discussed based on comfort level and clinical need. Follow-ups are scheduled at the end of each visit, with frequency adjusted as stability is achieved.

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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.

Dr. Meagan Maas is a double board-certified psychiatrist in Child and Adolescent Psychiatry and Adult Psychiatry. She completed residency training at Western Michigan University Homer Stryker M.D. School of Medicine and a fellowship at Rush University Medical Center. She earned her MD from American University of the Caribbean, an MPH from Boston University, and a BS in Brain, Behavior, and Cognitive Science from the University of Michigan. Dr. Maas has primarily worked in outpatient psychiatry.

Dr. Maas works collaboratively with patients, families, and care teams to tailor treatment that fosters growth and positive change. She values open communication, clear goals, and meeting patients where they are. She aims to empower and advocate for patients by exploring educational, therapeutic, and holistic supports alongside medication. She is an LGBTQIA+ affirming provider specializing in child and adolescent care, with a focus on depression, anxiety, OCD, autism spectrum disorder, and mood disorders.

Dr. Maas creates a safe, inclusive space where patients feel comfortable expressing concerns. Her sessions are collaborative, with a focus on personalized treatment aligned with patient goals. Initial evaluations are 75 minutes; follow-ups are 45. She is a real human dedicated to helping patients and families live authentically and with confidence.