Peter McGowan, MD

Dr. Deringer is a psychiatrist with board certification in general psychiatry and addiction psychiatry. She earned her M.D. from the University of Michigan Medical School, and she completed her psychiatry residency and addiction psychiatry fellowship training at New York University. She has previously held faculty roles at New York University School of Medicine and Harvard Medical School. She has been involved in training the next generation of psychiatrists through her past work on the Program Director team for the MGH-McLean Psychiatry Residency Program. She has expertise in treating adults with mood disorders, anxiety disorders, substance use disorders, personality disorders, trauma, and ADHD.

Dr. Deringer cares deeply about understanding each patient's unique experience.  She recognizes that mental health symptoms are impacted by an individual's biological make-up, social situation, and their individual way of interacting with others in the world.  She will assess all of these factors and work with you to develop an appropriate treatment plan to help you feel better and meet your goals.  She incorporates supportive psychotherapy into all of her patient meetings; this may include discussions of the role of nutrition, exercise, and sleep habits in your overall well-being.

Dr. Deringer will begin the evaluation process with a thorough one-hour session in which we will discuss your current symptoms, your prior treatment history, your medical history, and your goals for treatment.  At the end of that session, she will begin to formulate her diagnostic impression and treatment recommendations.  Sometimes, the evaluation process may require more than one session, and it may be helpful for Dr. Deringer to gather information, with your permission, from prior treatment or to collaborate with your therapist if you have one.  Dr. Deringer will work with you on a medication treatment plan, if clinically indicated, to help you manage your symptoms and achieve your treatment goals.

Alanna Montalvan is a Board-Certified Psychiatric Mental Health Nurse Practitioner (PMHNP) with over 15 years of nursing experience, including 10+ years as a PMHNP. She has supported individuals with anxiety, depression, ADHD, trauma-related disorders, bipolar disorder, and chronic mental health needs across outpatient, inpatient, and psychiatric emergency settings. Alanna holds a Master of Science in Nursing from Hunter College with a PMHNP concentration and is expanding her clinical expertise through Family Nurse Practitioner training. She values patient-centered care and multidisciplinary collaboration.

Alanna prioritizes creating a warm, non-judgmental space where patients feel heard, respected, and supported. She takes a collaborative approach, partnering with patients to identify goals, explore treatment options, and build long-term wellness strategies. Open communication, transparency, and a holistic perspective that integrates emotional and physical health guide her practice. Patients can expect thoughtful, evidence-based care that considers life stressors, identity, family dynamics, and wellness behaviors.

Alanna begins with a comprehensive assessment to understand each patient’s history, concerns, strengths, and goals. She develops individualized treatment plans, including medication management, psychotherapy-informed strategies, lifestyle recommendations, and coordination with other providers as needed. Treatment goals are regularly revisited to ensure care evolves with the patient. She emphasizes empowerment and education, helping patients feel confident and informed throughout their mental health journey.

Belinda received her undergraduate education at the University of Tulsa and completed her nurse practitioner training at the University of Texas–Arlington, earning a Master of Science in Nursing. She is nationally board-certified in psychiatry across the lifespan and has over a decade of experience working in outpatient, residential, and inpatient care settings. She is skilled in medication management and utilizes therapeutic modalities such as CBT, DBT, ACT, and psychodynamic approaches.

Belinda is a passionate psychiatric nurse practitioner dedicated to continual development and lifelong learning. With over ten years of experience, she spent more than five years working in a residential eating disorders facility. She has evaluated and treated individuals with a wide range of diagnoses, including depression, anxiety, OCD, and PTSD. Belinda believes in addressing the whole person and thrives on helping people find individualized solutions. While she specializes in using medication when necessary to alleviate symptoms, she also incorporates therapeutic techniques into her sessions to help clients discover what works best for them.

She prioritizes the therapeutic relationship and supports patient-centered goals. Belinda empowers her clients to choose options that align with their lives and encourages active engagement in self-care. She is deeply committed to helping individuals improve their quality of life by identifying and addressing areas of struggle, such as depression or grief. Additionally, she supports clients in recognizing and overcoming fears by identifying stressors and developing new coping strategies. Her approach inspires clients to reduce stress and prioritize rest and sleep to enhance overall wellness—body, mind, and soul.

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Dr. JinGu Lee is a Board-Certified Psychiatrist in the states of New Jersey and New York. Dr. Lee focuses on understanding each client's unique background and building a strong therapeutic alliance with his client. He works with ethically and culturally diverse patient populations who struggle with conditions such as depression, anxiety, bipolar disorder, relationship issues, and more. Dr. Lee provides comprehensive medication management, including screening for relevant medical conditions, and incorporates elements of psychotherapy during his regular visits when appropriate. Dr. Lee has a long-standing interest in preventive care and cultural diversity. He studied Public Health and Cultural Anthropology at Rutgers University and received his medical degree from Rowan University School of Osteopathic Medicine in New Jersey. He completed his Psychiatry residency training at Cooper University Hospital in Camden, New Jersey, where he was recognized for his excellence in outpatient service. Outside of his career, he enjoys traveling, singing, and hiking. He believes in living a balanced lifestyle with clear goals and also focuses on maintaining a close connection with his own family.

Steven Warren, PMHNP, has over 25 years of psychiatric nursing experience in both inpatient and outpatient settings. He has provided extensive individual and group psychotherapy and education, and since 2017, has offered medication management and brief therapy in a collaborative community mental health setting. Steven earned his Bachelor of Nursing in 2011 and Master of Nursing in 2017 from Indiana University, and is ANCC board-certified as a Psychiatric Mental Health Nurse Practitioner.

Steven values open and honest communication, working directly with patients to set clear, achievable treatment goals. He is dedicated to ensuring each person he works with feels heard, respected, and supported throughout their mental health journey. His approach emphasizes collaboration, empathy, and trust.

During the first session, Steven takes time to understand each patient’s history, concerns, and goals. He develops individualized treatment plans that reflect patient values, adapting them as needs evolve. Through a strong therapeutic relationship, he provides guidance and support to help patients achieve meaningful and lasting progress.

Dr. Tanvi Gupta, a native Marylander who recently finished her fellowship training in Child and Adolescent Psychiatry from the University of Maryland. She completed her residency in general psychiatry from San Antonio, Texas and is a Board Certified Psychiatrist. Prior to training, Dr. Gupta attended medical school at Touro College of Osteopathic Medicine in in New York. She also holds a master's in biomedical science from Rutgers University in New Jersey and a bachelor's in public health from the University of Maryland. She is on the Early Career Psychiatrist Committee for the Child and Adolescent Psychiatrists of Greater Washington Area. Dr. Gupta has worked in various settings, ranging from academic centers, schools, state hospitals and residential treatment centers. She also provided medication management and therapy to Medicaid patients in an outpatient setting, delivering care to children and adolescents with various mental health disorders. Dr. Gupta has experience in Emergency Psychiatry as well.

Dr. Gupta greatly values connecting with her patients. She is gentle yet direct in her approach. She uses a shared decision-making process to design a treatment plan that align with her patient’s goals. Dr. Gupta provides psycho education for diagnoses and medication recommendations. She has a special interest in ADHD and trauma. She appreciates a family-based approach.

Dr. Gupta uses a comprehensive biopsychosocial evaluation, psychotherapy and medication management to treat a variety of mood disorders, anxiety disorders, as well as ADHD. Dr. Gupta promotes non-pharmaceutical interventions, when appropriate, with patient-oriented lifestyle and behavioral modifications.