Our Clinicians

Keri Height, PsyD


keri-120Dr. Height is a licensed clinical psychologist and Assistant Professor at The Geisel School of Medicine at Dartmouth. She received her doctorate degree from University of Hartford and completed an APA accredited pre-doctoral internship and post-doctoral fellowship at Yale University School of Medicine. Prior to moving to New Hampshire in 2014, she was an assistant professor of psychiatry at Yale University and Clinical Director of the Yale Stress Center, a cutting edge interdisciplinary clinical and research center.

Dr. Height believes in the interconnectedness of the mind and the body and that treatment should be geared toward helping the whole person improve health and wellbeing. Dr. Height specializes in working with adolescents and adults who are having difficulty coping with stress and may be experiencing symptoms of anxiety, racing heart, obsessive thinking, interpersonal conflict, low mood, concentration and attention problems, emotional dysregulation, and sleep problems. She has expertise in working with individuals experiencing medical symptoms or conditions that may be exacerbated by stress, including tension headaches and migraines, chronic pain, gastrointestinal distress, hypertension, metabolic syndrome, obesity, overeating and substance misuse.   She is available to provide Biofeedback for many of these conditions.  Furthermore, Dr. Height has extensive experience working with individuals with chronic mental illness, as well as adolescents and adults with developmental disabilities.  She is trained in Family Based Therapy for Anorexia, Dialectical Behavioral Therapy, CBT for anxiety, depression and insomnia, various treatment modalities for addictions, and CBT for ADHD/executive functioning difficulties.  She also is available for fitness for duty evaluations and comprehensive psychological evaluations.

Carolyn Solzhenitsyn, MD

Medical Director

Carolyn Solzhenitsyn, MD is the Medical Director at Hanover Psychiatry. A faculty member at The Geisel School of Medicine at Dartmouth, she specializes in psychopharmacology and in Cognitive Behavior Therapy.

Dr. Solzhenitsyn is a graduate of the University of Pennsylvania School of Medicine, and completed her psychiatry residency at the Hospital of the University of Pennsylvania. While at Penn, she received her training in Cognitive Behavior Therapy from Aaron T. Beck, MD (the founder of Cognitive Therapy) and Judith S. Beck, PhD.

Prior to joining Hanover Psychiatry, Dr. Solzhenitsyn had a private practice in New York City.

Sarah Craig (Bujarski), PhD

Dr. Craig is a licensed clinical psychologist and assistant professor at the Geisel School of Medicine at Dartmouth. She received her doctorate degree from the University of Arkansas and completed an APA accredited pre-doctoral internship at the University of Mississippi Medical Center/G.V. Sonny Montgomery VA Consortium. Dr. Craig approaches treatment from a cognitive-behavioral perspective (CBT), which focuses on working with both thoughts and behaviors to help people overcome challenges. She has employed her skills across a variety of settings, including college counseling centers, community mental health clinics, academic medical centers, and VA medical centers.

Dr. Craig works primarily with adults and is experienced in treating a variety of concerns, including: trauma/PTSD, general anxiety, social phobia, panic attacks, sleep problems, chronic pain, depression, and Bipolar Disorder.

Dr. Craig’s specialty is in working with clients who may have more than one mental health diagnosis. When working with such clients, she strongly believes in the value of a collaborative working relationship with each client, striving to develop treatment approaches unique to each individual. She understands that seeking treatment can be difficult, and she aims to create a safe, understanding environment in which she can help clients identify and reach their personal mental health goals.

Dr. Craig uses state-of-the art science to inform her clinical work. She actively researches anxiety and substance misuse and has received National Institute on Alcohol Abuse and Alcoholism (NIAAA) grant funding for her work. She has dedicated her early career to understanding and improving psychotherapy treatments to ensure people receive the best, most efficient treatment available.

Burl Daviss, MD

Burl Daviss, MD, is an Associate Professor of Psychiatry and Interim Section Chief of Child and Adolescent Psychiatry at the Geisel School of Medicine.  Dr. Daviss is a child and adolescent psychiatrist who specializes in the pharmacological treatment of ADHD and mood disorders in youth and young adults. He is the former medical director of the Center for Children and Families at the University of Pittsburgh, and he is a member of the American Academy of Child and Adolescent Psychiatry. Dr. Daviss has been referenced in several journals including the Journal of the American Academy of Child and Adolescent Psychiatry and the Journal of Child and Adolescent Psychopharmacology. He has also received a career development award from the National Institute of Mental Health to develop research expertise in the assessment and treatment of ADHD and comorbid mood disorders in youth.

Matthew Duncan, MD

Matthew Duncan, MD, is an honors graduate of the Geisel School of Medicine, did his internship at Brown University, and completed his psychiatry training at the Harvard Longwood Psychiatry Residency Training Program in Boston. Since training, he has worked as Acting Director of Psychiatry at the Indian Health Service in Fort Defiance, Arizona and in private practice in a group setting with primary care and specialty physicians in his home state of Utah. He has moved back East to join the Psychiatry Department faculty where he provides clinical care and teaching, including leading the medical student teaching for the Department. At Hanover Psychiatry he serves as a diagnostician and psychopharmacologist.

Ron Green, MD

Ron Green, M.D. is a board-certified psychiatrist and an expert in pharmacotherapy, psychotherapy and neuropsychiatry. He is a Professor of Psychiatry, Active Emeritus, at The Geisel School of Medicine at Dartmouth and a longtime member of its faculty.

Dr. Green is a graduate of the University of Vermont College of Medicine, did his residency in psychiatry at Dartmouth then served as a psychiatrist in the U.S. Navy for two years. He has been at Dartmouth since then, first for 13 years, as Director of the Psychiatry Consultation/ Liaison Service at the VA Medical Center in White River Junction, Vermont, following which, for 25 years, he was the Residency Program Director in Psychiatry at Dartmouth-Hitchcock Medical Center. Since 2009 he has been a staff psychiatrist at Hanover Psychiatry.

In Ron’s long career, he has authored many scholarly works and his professional reach has gone far beyond the environs of Dartmouth. One example is his text, co-authored with Dr. Robyn Ostrander, and published in 2009 by WW Norton, “Neuroanatomy for Students of Behavioral Disorders”. As well he has garnered many local, regional and national teaching awards, including the 2013 American Psychiatric Association’s annual “Irma Bland Excellence in Residency Teaching Award” and the New Hampshire Psychiatric Society’s 2016 Leadership Award in the Service of the Mentally Ill. On the light side, Dr. Green for six years was medical consultant to HBO’s “The Sopranos”. He prescribed Tony Soprano’s medication (for the show’s script and not for Mr. Gandolfini of course) and helped design psychotherapy scenes between Mr. Soprano and Dr. Melfi.

Dr. Green is known as a doctor’s doctor. His stature, experience and guidance graces not just Hanover Psychiatry but the entire department of psychiatry at Dartmouth.

Bill J. Hudenko, PhD

Bill Hudenko, PhD, is an assistant professor of psychiatry at The Geisel School of Medicine at Dartmouth. He earned his doctorate in Clinical Psychology from Vanderbilt University and he completed both his internship and a post-doctoral fellowship in child psychology at Dartmouth-Hitchcock Medical Center. In recent years, Dr. Hudenko was an assistant professor of psychology at Ithaca College and a visiting assistant professor at Cornell University. While in Ithaca he taught clinical psychology courses, conducted research on autism-spectrum disorders, and maintained a small private practice. Dr. Hudenko has a broad background in treating child and adolescent psychopathology, with a special emphasis on disruptive behavior disorders, depression and anxiety disorders, autism-spectrum disorders, and childhood trauma. Dr. Hudenko also provides family therapy services and couples counseling.  Dr. Hudenko’s research has been published in journals such as Psychological Science, the Journal of Autism and Developmental Disorders, and the journal Autism.  His work has also been highlighted by MSNBC, US News and World Report, LiveScience, Dartmouth Medicine, and the Valley News.

Lori Keeling, MPH, MA

Lori Keeling, MPH, MA, is a clinical psychology doctoral intern at Hanover Psychiatry and the Dartmouth-Hitchcock Medical Center. She received her Master of Arts degree in Psychology from Duke University in 2013.

Ms. Keeling has expertise in Acceptance and Commitment Therapy (ACT), mindfulness-based interventions, and cognitive behavioral therapies. She specializes in treating children, adolescents, adults, and families with eating and weight-related concerns, depression, anxiety, stress, interpersonal difficulties, emotion dysregulation, and difficulties coping with chronic health conditions. She works collaboratively with clients and families to help them identify their unique values and increase behaviors that are consistent with those values. She also employs mindfulness techniques to help clients bolster resilience and approach their experiences, emotions, and thoughts with openness and curiosity. In addition to providing psychotherapy, Ms. Keeling has experience in conducting psychological assessments, including psychoeducational evaluations (e.g., evaluation of learning problems), ADHD assessments, and neuropsychological evaluations, including assessment of neurocognitive functioning among clients with low weight and/or eating disorder symptoms.

Ms. Keeling’s research interests focus on the neurocognitive mechanisms associated with binge eating disorder (BED), including the potential role of high fat, high sugar dietary intake on memory deficits (episodic memory and food-specific memory) and the development and maintenance of BED. She also has a passion for teaching and was awarded a Bass Teaching Fellowship in 2017 to teach an undergraduate/graduate level course at Duke: The Psychology of Mindfulness Meditation – Theory Research, and Practice (PSY610S).

Prior to her career in psychology, Ms. Keeling spent 10 years working in the field of public health education and research, where she helped clients increase health behaviors related to weight management, diabetes, heart disease, family planning, and sexual and reproductive health. She is currently a doctoral candidate in Clinical Psychology at Duke University, working under the mentorship of Dr. Nancy Zucker, PhD. She holds a Master of Public Health Degree in Global Health from Emory University and a Bachelor of Arts Degree in Interdisciplinary Studies from American University. Outside of work and school, she enjoys hiking, weight lifting, paddle boarding, drawing, cooking, and rehabbing furniture.

Robert M. Roth, PhD, ABPP

Robert M. Roth, PhD is an Associate Professor of Psychiatry at The Geisel School of Medicine at Dartmouth, Director of Neuropsychology and the Adult ADHD Program at Hanover Psychiatry, and Director of Adult Neuropsychological Services at Dartmouth-Hitchcock Medical Center. Dr. Roth is Board Certified in Clinical Neuropsychology.  His pre-doctoral training in neuropsychology took place at the Montreal Neurological Institute and Yale University School of Medicine, and he completed post-doctoral training in neuropsychology and neuroimaging at the Geisel School of Medicine at Dartmouth.

Dr. Roth provides neuropsychological assessments for a wide variety of clientele ages 16 and older who are experiencing cognitive problems such as memory loss, word finding difficulty, inattention or distractibility, or executive dysfunction (e.g., impulsivity, disorganization, poor decision making or problems solving). The Adult ADHD Program team provides detailed psychological and neuropsychological assessments for adults with suspected or previously diagnosed ADHD. Dr. Roth is committed to understanding the person as a whole, considering cognitive, emotional, personality, social, and other factors that can impact on a client’s ability to function at their maximal potential.

Dr. Roth is also a neuroscientist conducting neuropsychological and brain imaging research into a number of disorders including ADHD, schizophrenia, OCD, and substance abuse. His research is especially concerned with the role of executive functions in the etiology and treatment of such conditions. He has authored over 70 peer-reviewed scientific publications, as well as being the co-author of two published instruments for the assessment of executive functions (The Behavior Rating Inventory of Executive Function – Adult version, and the Tasks of Executive Control).

Gillian Sowden, MD

Gillian Sowden, MD, is a licensed psychiatrist and Assistant Professor of Psychiatry at The Geisel School of Medicine at Dartmouth.  Dr. Sowden’s clinical interests include adult psychopharmacology for mood, anxiety, personality, eating and trauma related disorders, substance abuse and women’s mental health.  She also has expertise in providing psychodynamic and dialectical-behavioral therapy.

Dr. Sowden has special interest in medical student education and previously taught medical students at Harvard Medical School.  Currently she is supervising and teaching psychiatry residents at Dartmouth-Hitchcock Medical Center. Research interests have included collaborative care for patients with depression and heart disease, and simulation training for psychiatry residents.

Dr. Sowden graduated from Williams College, summa cum laude, with a BA in Biology & Biochemistry.  She graduated magna cum laude from the Harvard Medical School and did her residency in Adult Psychiatry at Cambridge Health Alliance, a Harvard Medical School affiliate.

Christopher Spofford, PhD

Dr. Spofford is a licensed clinical psychologist in the states of New Hampshire and Rhode Island and Assistant Professor of Psychiatry at The Geisel School of Medicine at Dartmouth.  He completed his doctoral graduate training at the University of Massachusetts – Amherst and his postdoctoral fellowship training at the Alpert Medical School of Brown University.  Dr. Spofford’s clinical and research focus has been on the application of cognitive-behavioral interventions (CBT) to treat anxiety-related disorders and depression.  Dr. Spofford has extensive experience in the treatment and evaluation of obsessive-compulsive disorder (OCD) and OC related disorders, having completed a Brown University postdoctoral fellowship in this area.  From 2012- 2016, Dr. Spofford served as a research psychologist at the Providence VA Medical Center where he coordinated multiple projects investigating the treatment and diagnosis of combat-related PTSD.  Dr. Spofford joined the Hanover Psychiatry team in September of 2016.   He is available to provide individual therapy and diagnostic assessment services for adults and adolescents.

Regan Stanger, MD

Dr. Regan R. Stanger is a child, adolescent, and adult psychiatrist with extensive experience in both psychopharmacology as well as cognitive behavioral therapy and psychodynamic psychotherapy. A Diplomate of the American Board of Psychiatry and Neurology, Dr. Stanger holds two board certifications in Adult Psychiatry and Child & Adolescent Psychiatry. She recently joined Hanover Psychiatry after working in private practice on the Upper East Side of Manhattan for twelve years.

Dr. Stanger  completed her intern year of residency at the Yale-New Haven Hospital in Internal Medicine. She then joined the Department of Psychiatry at NewYork-Presbyterian Hospital, Weill Cornell Medical Center in New York City for her residency in Adult Psychiatry and her fellowship in Child & Adolescent Psychiatry. Following her fellowship, she entered private practice in New York City. During this time, she completed four years of additional psychoanalytic training at the New York Psychoanalytic Institute and taught psychiatry residents while on the voluntary faculty at

NewYork-Presbyterian Hospital. She also served on the advisory board of the David Nee foundation, which works to prevent suicide in young adults.

Dr. Stanger focuses on working with children, adolescents, and young adults. She is an expert in psychopharmacology and in utilizing different modalities of psychotherapy to treat patients for attention deficit disorder, learning disabilities, language based disorders, autism spectrum disorders, impulse control disorders, mood disorders, anxiety disorders, and eating disorders. She also sees patients who may not meet criteria for a psychiatric diagnosis but are seeking support with peer/ romantic/ family relationships, academics, issues with gender and sexuality, transitions to college, or career issues.

Dr. Stanger utilizes play therapy with younger children to help them express their emotions through play, which can lead to changes in behavior. She uses cognitive behavioral therapy to help patients understand how their thoughts influence their emotions, and how to learn coping skills. Dr. Stanger also finds psychodynamic principles to be very helpful in understanding how past relationships and experiences affect a patient’s current thoughts and emotions.

As part of her work with children, Dr. Stanger also collaborates closely with parents. She works with families to provide parenting advice and to address issues including adoption, divorce, and illness/death of a family member. She involves people in a patient’s life including other mental health professionals, pediatricians, internists, schools, educational consultants, and tutors. She understands that patients are tremendously influenced by their family and community relationships, and she works to educate and counsel these important members of a patient’s life as part of a holistic treatment plan.

Susan P. Stevens, PsyD

Susan P. Stevens, PsyD, is an Assistant Professor of Psychiatry at The Geisel School of Medicine at Dartmouth. Dr. Stevens completed her pre-doctoral training at the Veterans Hospital in White River Junction VT, and a postdoctoral fellowship at the Geisel School of Medicine and the National Center for Posttraumatic Stress Disorder (NCPTSD).

Before joining Hanover Psychiatry, Dr. Stevens was a staff psychologist at the White River Junction VA and the National Center for Posttraumatic Stress Disorder (NCPTSD). She taught and supervised psychology interns, postdoctoral fellows and psychiatric residents in treatments of PTSD. Her clinical specialty is the use of cognitive-behavioral techniques to treat depression, anxiety, PTSD, and relationship distress.

Dr. Stevens’ clinical and research focus has been on cognitive-behavioral treatments, couples therapy, and resiliency, and she has published numerous manuscripts in these areas. She was a consultant for a cognitive behavioral couple’s therapy study funded by the National Institutes of Mental Health, and was a research associate for The National Consortium for the Study of Terrorism and Responses to Terrorism (START), a Department of Homeland Security Center of Excellence grant focusing on mental health, community resilience, and the terrorist threat. She also has an interest in friendship and mindfulness and their potential benefits for overall wellbeing.

Dr. Stevens has had a life-long interest in mindfulness and meditation and was first introduced to formal meditative practices in 1984 while studying in India. She has integrated mindfulness and psychotherapy for many years in her clinical practice, and most recently has been trained as a teacher of the Mindfulness-Based Stress Reduction (MBSR) program developed by Jon Kabat-Zinn at the University of Massachusetts Medical School. She has completed the eight-week practicum in MBSR and the eight- day Teacher Development Intensive in MBSR at the Center for Mindfulness in Medicine, Health Care, and Society at the University of Massachusetts Medical School. She also teaches Mindfulness-Based Cognitive Therapy for Depression (MBCT).

Sara Vargo, MSW, LICSW

Sara Vargo, MSW, LICSW is a Licensed Clinical Social worker and an Instructor in Psychiatry at The Geisel School of Medicine at Dartmouth. Sara has worked in the community mental health since 2005 and has been a member of the Department of Psychiatry since 2012. While receiving her graduate degree from Smith School for Social Work, Sara completed clinical internships at both the Veteran’s Administration Hospital in White River Junction, VT and at the Brattleboro Retreat in Brattleboro, VT.

Sara specializes in children and adolescents, ages 4 through 18, and their families. Based on extensive experience working with depression, anxiety, disruptive disorders, and childhood trauma, Sara seeks to understand each client’s environment from a child-centered perspective. She is experienced in using psychotherapy techniques, Cognitive Behavioral Therapy, play therapy, motivational interviewing, mindfulness, and attachment-based approaches to fit her clients’ individual needs. Given her whole-person approach, Sara believes that client caregivers are an integral part of treatment, and therefore welcomes Caregivers to participate in treatment. It helps to deepen the caregiver’s understanding of the child’s perspective, deepen the child’s understanding of the caregiver’s perspective, and allows for collaboration on identifying creative solutions to reduce problematic symptoms and strengthen the family.

No matter her client’s age, Sara creates a safe and supportive environment and encourages clients to utilize various methods to nurture expression of thoughts and feelings. Whether through play, art, writing or talking, Sara believes that therapy is not something that defines us, but rather something that grows us.