ADHD Psychiatrists in Massachusetts

MassachusettsHolly James Corrigan, RN, MSN, PMHNP, is a board-certified psychiatric nurse practitioner committed to helping people navigate their mental health with skill and heart. She earned her BSN from Russell Sage College in 2009, her MSN from Massachusetts General Hospital Institute for Health Professions in 2016, and completed Psychiatry Redefined’s Fellowship in Functional and Integrated Psychiatry in 2025. Holly keeps current by attending top conferences, like the International Trauma Conference in Boston, ensuring she’s always at the forefront of her field.

Holly’s philosophy is simple yet powerful: care should fit the person, not just the diagnosis. She’s passionate about tackling complex issues—suicide prevention, C-PTSD, chronic depression, ASD, OCD—and advocating for underserved communities. For Holly, it’s about delivering real, meaningful support to those who need it most.

Her career began as a registered nurse in neurology, pediatrics, and emergency care, before she found her calling in psychiatry. Since then, she’s provided medication management and supportive psychotherapy in outpatient clinics and worked in inpatient units serving adults and adolescents.

Holly believes in patient-centered care based on the individual, rather than focusing only on a diagnostic algorithm. The first appointment will include a comprehensive psychiatric evaluation and a discussion about what your goals of treatment are. Pharmacological and therapeutic recommendations are both important elements of the treatment plan. Follow up appointments will be more concise, but may include various therapeutic modalities, medication changes, and supportive psychotherapy.

Dr. Thomas Simeone is Board Certified by the American Board of Psychiatry and Neurology in Psychiatry.  Following his completion of medical school at Universidad Autonoma de Guadalajara, he completed his Fifth Pathway Clinical Training at New York Medical College.  He then completed his Psychiatry Residency at Tuft's University in Boston, MA, and went on to complete a Child and Adolescent Fellowship Program at the University of Florida in Gainesville FL.  He has since worked in both hospital inpatient and outpatient settings, as well as in Residential Treatment for adolescents. Dr. Simeone has treated a wide spectrum of mental health conditions including Anxiety and Depression Disorders, as well as Mood Disorders and Post Traumatic Stress Disorder. He has also treated ADHD, OCD and Eating Disorders in adults and adolescents. Dr. Simeone has worked in Telehealth Practice for the past 4 years. He is a Fellow of the American Psychiatric Association (APA) and a member of the American Medical Association (AMA).

Dr. Simeone utilizes medication management and psychotherapy practices to achieve treatment goals for his patients.  During an initial assessment and evaluation, a thorough review of the patient's previous mental health treatment is considered.  Dr. Simeone assesses patients' acute symptoms including recent stressors and exacerbating factors and then establishes a comprehensive treatment plan with the patients' goals in mind.  Psychotherapy with medication is incorporated into the treatment plan of all patients.  Dr. Simeone always aims to achieve full remission of symptoms for his patients.

Dr. Simeone's practice focuses on medication management with facets of various psychotherapeutic techniques.  He conducts 30 medication management follow up sessions. Dr. Simeone is a sincere and empathic physician who advocates for patient autonomy and believes in a direct and transparent approach to patient treatment. He encourages active patient participation in their treatment plans.

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Dr. Michael Bartolac is a board-certified psychiatrist with experience in both outpatient and inpatient psychiatric care. He has treated a wide range of psychiatric conditions including affective, psychotic, anxiety, trauma-related, substance use, neurodevelopmental, personality, and neurocognitive disorders. His clinical experience includes hybrid remote outpatient work, inpatient psychiatry on locked units, consultation for medically hospitalized patients, and performing electroconvulsive therapy (ECT). He earned his medical degree from Lake Erie College of Osteopathic Medicine and completed psychiatry residency at West Virginia University/Charleston Area Medical Center.

Dr. Bartolac values creating a space where patients feel comfortable voicing their concerns. His treatment style is rooted in open communication and trust. He primarily focuses on medication management and supportive therapy, while incorporating psychodynamic and cognitive behavioral techniques during 30-minute follow-up visits.

Dr. Bartolac is committed to providing competent and compassionate care. He takes a collaborative approach, working closely with patients and their healthcare team to ensure all aspects of care are aligned with the patient’s needs and goals.

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.

Dr. Kimberly Ford completed her psychiatry residency training at Harvard University in Boston, Massachusetts. She has enjoyed treating patients for over 25 years in a variety of settings such as inpatient, outpatient mental health clinics, emergency room, and multidisciplinary clinics. She is talented in her ability to connect, understand, and empathize with her patients.‍She has expertise in treating patients with mood disorders, anxiety, PTSD, and incorporates psychopharmacology when needed, psychodynamic and supportive psychotherapy. She wholeheartedly believes that treating her patients holistically is of high importance, with a focus on their physical, emotional, mental, and spiritual well-being.

Erin Snider, PMHNP, brings more than seven years of experience as an Advanced Practice Registered Nurse at Lindner Center of HOPE, a full-service psychiatric facility affiliated with the University of Cincinnati and Cincinnati Children’s Hospital. Her work has spanned the full spectrum of psychiatric care, including inpatient crisis intervention, partial hospitalization, and outpatient services. She holds a bachelor’s degree in psychology from the University of Kentucky and both a BSN and MSN from Wright State University. Erin also recently earned a Mindfulness and Yoga-Studies Certificate from the University of Cincinnati.

Erin prioritizes building a strong therapeutic relationship and values open communication to create a supportive environment for healing. She views psychiatry as a holistic practice, integrating evidence-based approaches that address mental, emotional, physical, and spiritual well-being. Patients working with Erin can expect compassion, respect, and a collaborative partnership in their care.

Erin begins each appointment with open conversation to better understand each individual’s story and experiences. She works with patients to identify their concerns, explore barriers to growth, and highlight strengths. Together, she collaborates on a treatment plan that aligns with the patient’s personal goals, ensuring care is both personalized and empowering.

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.

Shannon McElhone is a Licensed Mental Health Counselor in New York and Massachusetts. She has over ten years' experience working in the mental health field. Shannon has experience working with children, adolescents, and adults seeking assistance in managing their experiences with depression/mood challenges, anxiety, life transitions, self-esteem, trauma, attention focus, and relationship issues. Shannon utilizes humanistic, person-centered, collaborative, strength based, cognitive behavioral, mindfulness based, solution focused and emotionally focused approaches to therapy while maintaining an open, flexible, creative atmosphere to remain aware of the unique and individual needs of each client. Shannon seeks to create a non-judgmental and safe environment where a caring relationship can be built with her clients to utilize and add to their strengths. Through her practice, a collaboration can bring her clients towards achieving their goals and living the life they desire. Shannon completed her Bachelor of Arts in Human Relations from St. Joseph's College and received her Master of Science in School Counseling and Extended Master of Science in Clinical Mental Health Counseling from Long Island University. Shannon's years of experience include working as a Rehabilitation specialist/therapist at a Pros program, a psychotherapist at an outpatient clinic, a Child and Youth Behavioral Military Family Life counselor working with children and families on a Military base in New York. More recently, Shannon has held a role as a psychotherapist on an online platform that provides virtual therapy and continues to engage in this role at Talkiatry. Shannon's specialties include: Depression, Anxiety, OCD- Obsessive Compulsive Disorder, ADHD, Trauma, Grief & Loss, Stress management, Life transitions, Self-esteem issues and Relationship issues.

Dr. Carter chose the field of psychiatry with the goal of empowering her patients and equipping them with the skills and tools to improve their mental health. She strives to create a safe, nonjudgmental space where patients feel heard and supported. She strives to destigmatize mental illness and normalize seeking help when struggling. Her passion for psychiatry stems from a deep interest in connecting with people and understanding their unique stories.

Dr. Carter believes the patient-physician relationship should be a partnership, built on trust, empathy, and shared goals. She encourages honesty, collaboration, and open communication, and believes there are no wrong questions, and your voice matters. She encourages questions and feedback and tailors care to each person’s goals, comfort level, and pace.

Dr. Carter wants to get to know the whole person, not just their symptoms. Together, she works with patients to create a personalized and thoughtful treatment plan that may include therapy, lifestyle support, and/or medication, always with room to adjust based on your evolving needs and preferences.

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Jessica Fairchilds is a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP) with over 8 years of experience in many psychiatric settings and populations. She earned her Master of Science in Nursing from the University of Mississippi Medical Center and is passionate about providing high quality, comprehensive mental health services. Jessica prides herself in her patient-centered approach by fostering strong provider-patient relationships to achieve optimal treatment outcomes. In her free time, Jessica enjoys spending time with her husband and young daughters, traveling the globe, or getting lost in a historical fiction novel.

Jessica is highly focused on building a strong therapeutic relationship with her clients while making them feel heard and validated. She strives to provide the highest level of care while exploring different treatment options to find what works best for each individual.

Jessica will focus on learning about the client as an individual and learning the concerns of the client while working to develop an individualized treatment plan. She uses her extensive knowledge of medications and therapy techniques to guide treatment options for the best outcomes.

Dr. Lundgren is a board-eligible adult psychiatrist who completed his residency at the University of Rochester. During his final year, he served as Chief Resident in both inpatient and emergency psychiatry, demonstrating leadership and clinical excellence in high-acuity settings.

Before beginning his medical journey, Dr. Lundgren earned a degree in philosophy from the University of Georgia. He went on to serve as a police officer and investigator near Atlanta, Georgia, for six years. These formative experiences gave him unique insight into the complex relationship between mental health and personal well-being, safety, and fulfillment. Motivated by this perspective, he pursued a degree in neuroscience at Columbia University, graduating with honors, before attending medical school.

Dr. Lundgren brings experience across outpatient, inpatient, and emergency psychiatric care. He emphasizes a strong therapeutic alliance, supportive psychotherapy, and evidence-based treatment. He is committed to understanding people within the context of their experiences and circumstances, recognizing how these factors may contribute to their mental health concerns and strengths.

Dr. Lundgren provides comprehensive psychiatric medication management and cares for individuals experiencing depression, anxiety, trauma-related disorders, and other mental health conditions. When beneficial, he may also recommend collaborating with a therapist to support a more holistic and effective treatment plan.

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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.

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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.

Background and credentials

Dr. Kristina Schnitzer is a board-certified psychiatrist. She earned her medical degree from the New York University School of Medicine and completed her residency in Adult Psychiatry at the Massachusetts General Hospital/McLean Adult Psychiatry Residency Program. She further specialized by completing a one-year clinical and research fellowship in Public and Community Psychiatry through Massachusetts General Hospital and the Massachusetts Department of Mental Health. In addition to her medical training, she holds a Master of Public Health (MPH) from the Harvard T.H. Chan School of Public Health. She has over three years of experience practicing psychiatry across inpatient, emergency, and outpatient settings.

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Treatment approach

Dr. Schnitzer focuses on medication management as the foundation of her treatment approach, typically combining it with supportive or emotionally focused therapy during 30-minute follow-up visits. She takes a collaborative and individualized approach to patient care and, when needed, may recommend additional therapy by integrating a therapist into the care team to ensure the best possible outcomes. She has experience treating a broad range of psychiatric disorders in various clinical settings.

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What you can expect in a first visit

Patients can expect a thorough and structured evaluation in their first visit, where Dr. Schnitzer carefully assesses their symptoms, medical history, and treatment goals. She emphasizes open communication and collaboration, ensuring that patients are fully involved in shaping their treatment plans. Follow-up visits typically last 30 minutes, during which she monitors progress, adjusts treatment as needed, and may recommend additional therapeutic support for comprehensive care.

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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 specialize in medication management and collaborate with you on a treatment plan that fits your needs and comfort level.

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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.

Glenn is a Board-Certified Psychiatric Mental Health Nurse Practitioner with nearly 30 years of experience in health care, dedicated to addressing the mental health needs of his community. With a background in both inpatient and outpatient settings, he is committed to helping individuals become the best versions of themselves—no matter where they are in their journey at the time of their first appointment.

Outside of work, Glenn enjoys spending time with his family, biking, and being outdoors.

He takes a patient-centered approach and emphasizes that he, too, is human. Everyone faces challenges at different times and in different ways. Glenn adopts a holistic perspective, recognizing that effective treatment involves understanding how life challenges impact a person as a whole. He is dedicated to providing compassionate, empathetic, and practical care to all his patients.

Glenn engages with patients in a way that makes it easy and natural for them to share their stories. From there, he promotes a shared decision-making approach to develop the most effective treatment plan. His areas of expertise include psychopharmacology, as well as Cognitive Behavioral, Supportive, and Psychodynamic therapies.

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