OCD Psychiatrists in Massachusetts

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.

‍

Dr. Ioana Horotan-Enescu is a board-certified Psychiatrist. Before joining Talkiatry, she was an Active-Duty staff psychiatrist at Blanchfield Army Community Hospital, Fort Campbell, KY. Her military service also included roles such as Medical Director of Behavioral Health and Interim Clinic Chief for Embedded Behavioral Health Clinic. She completed her internship and residency at Walter Reed National Military Medical Center and earned her Doctor of Osteopathy Degree from the University of New England College of Osteopathic Medicine. Her clinical experience spanned from the inpatient to the outpatient setting and afforded her the opportunity to develop comprehensive skills in the treatment of PTSD, mood disorders, thought disorders, addiction and perinatal mood disorders. Her teaching experience spanned multiple institutions, where she has served as a preceptor and mentor for medical students, nurse practitioner and physician assistant students. In addition to medication management, she augments her practice by implementing mindfulness, psychodynamic and supportive therapy techniques in her everyday practice to enhance treatment and improve treatment response. Dr. Horotan-Enescu holds several certifications, including in Cognitive Behavioral Health Therapy for Suicide Prevention, Motivational Interviewing and Battlefield Acupuncture. She has delivered presentations at national and international conferences on various topics, reinforcing her commitment to advancing the field of psychiatry.

Dr. Saria El Haddad is double boarded in general psychiatry and addiction psychiatry. She previously held a leadership role of medical director for the dual diagnosis partial hospitalization program at the Brigham and Women's Faulkner hospital where she helped create and establish this program, and also worked as an outpatient addiction psychiatrist. She has been involved in teaching and has maintained an academic affiliation with the Harvard Medical School. In addition, she has appeared in numerous professional publications and authored several research papers.  

Dr. El Haddad received her medical degree from the American University of Beirut, Lebanon and completed her psychiatry residency program at the University of Virginia. She completed a fellowship in addiction psychiatry through Boston University after which she started working at the Brigham and Women's hospital. Dr. El Haddad's approach to treatment focuses on adopting a holistic approach through behavioral change, medication management, and brief psychotherapy.

Svetlana Schwartz, PMHNP, is a board-certified psychiatric nurse practitioner with 18 years of experience in outpatient psychiatry. She provides care for individuals with a wide range of mental health conditions, including depression, anxiety, substance use disorders, ADHD, bipolar disorder, OCD, schizoaffective disorder, and schizophrenia.

Her practice focuses on medication management, often combined with supportive or cognitive behavioral therapy. Svetlana earned her Master of Science in Nursing with a specialty in adult psychiatry from the University of Massachusetts Lowell and her Bachelor of Science in Nursing from the University of Massachusetts Boston. She is trained in psychiatric diagnosis, medication management, and both psychodynamic and cognitive-behavioral therapies.

Over the past 18 years, Svetlana has gained extensive experience evaluating and treating adults in outpatient settings. She previously worked at Arbour HRI Outpatient Clinic in Massachusetts and, for the past decade, has served patients at Memorial Healthcare System in Florida.

Svetlana believes that addressing mental health is just as important as addressing physical health. At Memorial Healthcare System, she collaborated with the Mind-Body Wellness Clinic to support both the medical and psychiatric needs of her patients. She has also contributed to the training of psychiatric and internal medicine residents in outpatient psychiatry. Her approach emphasizes the integration of medication management with individual therapy to provide comprehensive, patient-centered care.

‍

***Provider does not prescribe controlled substances*** Dr. David Eiler is a staff psychiatrist at Talkiatry. He is board certified in adult psychiatry. Before joining Talkiatry, Dr. Eiler was a staff psychiatrist at Dartmouth-Hitchcock Medical Center (DHMC), where he had an academic appointment and served as clinical director of transcranial magnetic stimulation (TMS) and intranasal esketamine services. In his practice, Dr. Eiler has focused on medication management and interventional techniques, including TMS, for the treatment of depression and other disorders. Dr. Eiler received his MD from the University of Wisconsin School of Medicine and Public Health and completed his residency at DHMC.

Dr. Meghan Fahy Hebishi is double-board certified in General Psychiatry and Child and Adolescent Psychiatry. Originally from Delaware, Dr. Hebishi earned her medical degree from the Philadelphia College of Osteopathic Medicine in 2017. She also obtained a Master of Science in Biological Sciences from Drexel University and a Bachelor of Science in Biology from Juniata College. In 2017, Dr. Hebishi moved south and is happy to call North Carolina her home. She completed her internship at Campbell University/Harnett Health in 2018. She went on to complete a General Psychiatry Residency followed by a Fellowship in Child and Adolescent Psychiatry at East Carolina University Brody School of Medicine. Prior to joining Talkiatry in 2025, Dr. Hebishi was in private practice at North Raleigh Psychiatry in Raleigh, NC.

Dr. Hebishi is experienced in treating children, adolescents and adults. She utilizes medication management and psychotherapy in her clinical practice. Her areas of interest include ADHD across the lifespan, anxiety disorders, mood disorders (depression and bipolar disorder) and OCD. She is dedicated to building a collaborative relationship with patients and their families where shared-decision making is respected and encouraged. She is passionate about providing continuity of care to her patients as they navigate life's changes and challenges.

Dr. Amy Prince is a board-certified adult psychiatrist who graduated from SUNY Downstate Medical Center and completed her residency training at UMass Medical Center, where she served as chief resident during her final year. Dr. Prince has worked with patients in a variety of treatment settings, including inpatient, partial hospital programs, community mental health centers, and outpatient. Dr. Prince believes that integrating therapy, psychopharmacology and lifestyle modifications can lead to the greatest gains in emotional wellness. She believes that working collaboratively with patients leads to the best outcome. Dr Prince has worked with a diverse patient population, but especially enjoys working with patients with mood disorders, anxiety, and ADHD. Dr. Prince offers supportive therapy in conjunction with psychopharmacology. In cases in which a patient would benefit from more intensive therapy than what could be done in 20-25 minute visits, Dr Prince may recommend adjunctive therapy with a licensed therapist.

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. Jon-Kar Zubieta is a board-certified psychiatrist and nuclear medicine physician whose work bridges neuroscience and clinical care. He focuses on understanding how the brain regulates motivation and stress, applying this knowledge to mood disorders, pain, and substance use. With extensive experience in functional imaging, Dr. Zubieta explores how neurobiological mechanisms shape emotional and physical well-being.

Dr. Zubieta takes a collaborative and evidence-based approach to care. He values patient perspectives and prioritizes creating a supportive environment where patients feel heard. His goal is to tailor treatment plans that address both the psychological and biological aspects of mental health conditions.

Dr. Zubieta begins with a thorough assessment of each patient’s history, symptoms, and goals. He integrates clinical evaluation with insights from neuroscience and imaging research when relevant. Together with patients, he develops a personalized treatment plan that may include therapy, medication, or combined approaches, continually adjusting strategies to optimize outcomes.

Dr. Jane Eisen comes to Talkiatry from her previous position at McLean Hospital, in Boston, where she was Clinical Director of the Depression and Anxiety Division, overseeing the integration of clinical work, faculty development, and research in the division. Clinically, she has experience working with people with significant mood and anxiety difficulties. Dr. Eisen's practice focuses on using an integrated approach to the understanding and treatment of individuals' psychosocial stresses and psychiatric symptoms. Her sessions are usually 30 minutes. She frequently suggests including a family member or friend in at least one session to get a comprehensive sense of each person's strengths and challenges. She received her medical degree from NYU and completed her psychiatric residency at Mt. Sinai Hospital. She spent a number of years in the Brown system, as Training Director for the Brown Psychiatry Residency and as Vice-Chair of the Brown Department of Psychiatry. For several years, she served as Chair of the Department of Psychiatry at Mt. Sinai West/St. Lukes' prior to her position at McLean, as Clinical Director of the McLean Hospital Depression and Anxiety Division. She has worked primarily with outpatients with the exception of a recent period of residential work at the Pavilion at McLean Hospital. Dr. Eisen is a general psychiatrist with a focus on anxiety disorders, OCD, and mood disorders. She is interested in the impact of trauma and personality and has extensive experience working with young adults.

Background  and credentials    

Dr. Andrew Lelin is a board-certified Psychiatrist in Adult Psychiatry. He  received his bachelor's degree from Johns Hopkins University and a master's  in Medical Humanities, Compassionate Care, and Bioethics from Stony Brook  University. Dr. Lelin earned his medical degree from Hofstra-Northwell School  of Medicine and completed his residency at Rutgers-Robert Wood Johnson School  of Medicine, where he specialized in advanced psychopharmacology with diverse  patient populations. He also has extensive training and experience in  psychotherapeutic modalities, including psychodynamic therapy,  cognitive-behavioral therapy, habit-reversal therapy, and cognitive  processing therapy. Following his training, Dr. Lelin provided inpatient  consultation and crisis intervention services in New York City.    

‍

Treatment approach    

Dr. Lelin employs a compassionate, humanistic approach designed to align  closely with his patients' personal goals and values. His method integrates  advanced psychopharmacology with psychotherapeutic techniques such as  psychodynamic, cognitive-behavioral, habit-reversal, and cognitive processing  therapies. He aims to carefully balance diagnosis, avoiding both  overdiagnosis and underdiagnosis, to ensure precise and tailored care. Dr.  Lelin’s approach is particularly effective in addressing conditions like  anxiety, depression, bipolar disorder, OCD, trauma-related issues, and other  psychiatric conditions.    

‍

What you can expect in a first visit    

During the initial visit, patients can expect a comprehensive, detailed  evaluation designed to thoroughly understand their individual experiences and  needs. Dr. Lelin prioritizes establishing a compassionate and comfortable  environment where patients can openly discuss their concerns and goals. This  initial assessment is followed by meticulous and thoughtful follow-ups,  providing clarity and direction in the treatment process.    

‍

Why Talkiatry?    

We’re a virtual mental health practice that makes it easy to find great  care. We combine quality and convenience to help you thrive—faster. Our  providers, like this one, are highly trained experts who speciualize in  medication management and collaborate with you on a treatment plan that fits  your needs and comfort level.

Dr. Mary O'Malley is board certified in Adult Psychiatry and Sleep Medicine. She received her medical degree from Weill Cornell Medical School and PhD in Neurobiology from The Rockefeller University. She completed her Psychiatry residency and Sleep Medicine Fellowship training at the New York University Medical Center. In her psychiatric practice, Dr. O'Malley uses an integrative approach to health, combining evidence-based concepts in neurobiology with psychological, social and spiritual/existential worldviews to understand and treat every patient. Her primary practice is medication management. She also integrates elements of psychotherapy into her work, typically within 30-minute follow-up visits. In addition to medication and psychotherapy, she incorporates wellness tools into visits, such as mindfulness exercises and sleep management strategies. If she believes that additional psychotherapy is needed, she will recommend that you add a therapist to your care team. Dr. O'Malley has extensive experience working with people from many stages of life, with diverse world views and cultural backgrounds. She has always had an inclusive practice and welcomes people who identify as LBGTQIA+. As part of her own life path she became an Interfaith Minister and enjoys including spirituality and the supportive role it can play in healing for her patients. Her primary focus is working with adults with mood and anxiety disorders, trauma symptoms, ADHD, and problems with sleep. She enjoys working with people facing life transitions, especially older adults and women who are struggling with mental health challenges related to pregnancy and post-partum health. Prior to joining Talkiatry, Dr. O'Malley was working at Hartford Healthcare with adults in intensive outpatient programs and at Hackensack Meridian Health outpatient clinics. She was the medical director of the Consultation Liaison Service at Berkshire Medical Center in Pittsfield, Massachusetts, and an assistant professor at UMass Medical School. She has published and presented widely on topics related to Wellness in Psychiatry, Ethics and Sleep Medicine. She is an advocate for finding your voice in medical decision-making and enjoys using sound healing for relaxation and stress management.

Shaneika Lindsay, PMHNP, is a board-certified psychiatric nurse practitioner dedicated to providing personalized and empathetic care to those in need of mental health care. Her academic journey began with a B.S. in Biology from the University at Albany. She later received her B.S. in Nursing from Pace University and attained her Psychiatric Mental Health Nurse Practitioner M.S. from Hunter-Bellevue School of Nursing, graduating magna cum laude. Shaneika's practice focuses on medication management. Occasionally, Shaneika may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. For the last seven years, Shaneika has diligently provided care to our nation's veterans, working on a dual diagnosis inpatient psychiatric unit in the VA New York Harbor Healthcare System. In her time at the VA, she has gained extensive experience in managing substance abuse and co-morbid psychiatric disorders. In addition, while attending Hunter College, she completed a yearlong clinical rotation at Casa Promesa, a mental health outpatient and inpatient facility that services some of the most vulnerable and underserved populations in the South Bronx. As a Nurse Practitioner, her primary focus is holistic care, taking into consideration all physical, psychological, interpersonal, and environmental factors when creating unique treatment plans. She strongly believes that all of these factors are interconnected and play a significant role in any individual's mental health and vitality. Shaneika's goal is to work with clients to create a safe, non-judgmental, and collaborative treatment environment that promotes sustained healing and positive self-development.

Dr. Kamil Dar graduated from Boston Medical Center Brighton, Massachusetts, from the Department of Psychiatry. He received his training in Interventional Psychiatry including ECT and TMS at Beth Israel Deaconess Medical Center, a Harvard University Teaching Hospital. He has multiple publications in research. Dr. Dar is culturally diverse and speaks English, Urdu, Punjabi, Hindi and Chinese Mandarin. In his free time, he enjoys playing sports with his family, including soccer and cricket.

While assessing his patients with the biopsychosocial model, he treats with evidence based treatment.

He utilizes therapeutic techniques such as cognitive behavioral therapy and psychodynamic therapy in conjunction with medication for optimal results.

Dr. Kristofer Willers is a board certified adult psychiatrist. He earned his undergraduate degree and Masters in Teaching from Boston University, followed by his medical degree from the

University of Massachusetts Medical School. Dr. Joondeph-Breidbart completed his residency in general adult psychiatry at Cambridge Health Alliance, a Harvard teaching hospital.

Currently, Dr. Kristofer Willers serves as a staff psychiatrist at Harvard University Health Services, where he works with both undergraduate and graduate students. He has developed significant expertise in working with LGBTQ individuals through his involvement with the Gender and Sexuality Clinic at Cambridge Health Alliance and the  LGBTQ Interdisciplinary Team at Harvard University Health Services. While he has extensive expertise in treating college-aged young adults, his practice also includes a broad range of patients, with a particular specialization in Obsessive-Compulsive Disorder (OCD). He is trained in Exposure and Response Prevention Therapy, a highly effective treatment for OCD.

Dr. Kristofer Willers takes a holistic approach to mental health care, integrating therapy into his sessions and collaborating with patients to develop individualized medication regimens that best meet their needs. His gentle and understanding approach helps create a supportive environment for his patients, fostering their mental and emotional well-being.

Cecilia Wild is a board-certified psychiatric-mental health nurse practitioner (PMHNP-BC) with a strong background in treating patients across the mental health spectrum. She earned her Bachelor of Science in Nursing from Illinois State University and began her career in a women’s residential facility specializing in mood disorders, eating disorders, and PTSD. She then transitioned to inpatient adolescent psychiatry, where she became a charge nurse and obtained her Psychiatric-Mental Health Nursing Certification (PMH-BC) from the American Nurses Credentialing Center (ANCC). Inspired by her passion for mental health, she pursued her master's degree at the University of St. Francis to become a PMHNP.  

Cecilia has extensive experience treating patients at all levels of care, including inpatient, PHP/IOP, and outpatient settings. She later transitioned to telehealth, providing medication management to college students. She is passionate about mental health advocacy, particularly within the LGBTQ+ community.  

Cecilia takes a team-based, individualized approach to care. She believes in the importance of education, open communication, and empowering patients in their treatment journey. She emphasizes a holistic perspective, incorporating medication management, therapy, and lifestyle modifications.  

Cecilia prioritizes a trauma-informed approach, recognizing the significant role trauma plays in mental health. She integrates mindfulness techniques, motivational interviewing, and lifestyle changes to support overall well-being. By fostering a collaborative and supportive environment, she helps patients build resilience and achieve their mental health goals.