Alexis Lanzillo, LPC

More Clinicians

Dr. Dominique Holley is a triple board-certified psychiatrist in Adult Psychiatry, Child and Adolescent Psychiatry, and Addiction Medicine. Dr. Holley completed her post-doctoral residency and fellowship training at Walter Reed National Military Medical Center. She has served as an active US Army officer and recently separated from the US Army after 11 years of service. In her most recent role, she served as the Deputy Chief of the Department of Behavioral Health at Fort Campbell, KY where she provided clinical and administrative supervision, as well as mentorship and guidance for an interdisciplinary team of over 140 personnel. She maintained oversight of behavioral health care being delivered through 11 clinics and satellite locations, providing patient care for over 30,000 beneficiaries. While in leadership, she continued to provide direct patient care for service members and dependents including child and adolescent populations. Due to her experience with this unique population, she has extensive experience in treating individuals with trauma. She offers an holistic approach when caring for individuals dealing with mental illness as well as phase of life circumstances. She believes in treating the whole person and attending to physical, spiritual, and mental health. Dr. Holley provides supportive, cognitive behavioral, acceptance and commitment, and psychodynamic therapy skills that complement medication management in order to help improve wellness.

David Eiler, MD

Staff Psychiatrist

***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.

Paulina Bollat Orbea, LCSW

Staff Therapist

Paulina Bollat Orbea is a Licensed Clinical Social Worker in Florida and Colorado. She earned her Master’s Degree in Social Work at Florida International University and has worked in a variety of clinical settings including outpatient clinic, psychiatric hospital, correctional facility, community mental health, university counseling and research and private practice environments.

Paulina has experience working with individuals who experience depression, anxiety, trauma, stress, family conflict, LGBTQ+ related concerns, substance use disorders and other mental health concerns. Paulina has worked with people of diverse ethnicities, cultures and identities. As a Guatemalan native, she is also able to offer therapy in Spanish.

Paulina’s therapeutic approach is dependent on the patient’s needs. She largely follows a Cognitive Behavioral approach, while also implementing psychodynamic, Internal Family Systems, Person-Centered and Solution-Focused orientations. Her treatment style prioritizes evidence-based practice and a therapeutic alliance built through empathy, collaboration and cultivating a safe, judgement-free space for the patient.

Carmen Orellana Martinez, MD

Staff Psychiatrist

Dr. Carmen Orellana is a Staff Psychiatrist at Talkiatry who has been in practice for over 6 years, both in the U.S. and abroad. She is double board-certified in child and adolescent psychiatry and adult psychiatry. Dr. Orellana's practice focuses on medication management. She strives to provide exceptional medical care and has extensive experience in treating persons with diverse behavioral disorders and backgrounds. Dr.Orellana involves her patients in all decisions about their health, and provides care that is respectful of patient preferences, needs, and values. Typically, she would recommend evidence-based treatments to her patients and may, occasionally, believe that concurrent therapy is also needed. She would ask that you bring a therapist into your care team to provide the best outcome. Dr.Orellana received her medical degree from Universidad Evang�lica de El Salvador. Dr. Orellana completed a residency in Psychiatry and a fellowship in child and adolescent psychiatry at the Southern University School of Medicine in Springfield, Illinois. After completing her training, Dr. Orellana remained in the school, where she worked as an Assistant Professor of Child and Adolescent Psychiatry, supervising and teaching medical students, residents, and fellows, and treating patients with various psychiatric conditions. Dr. Orellana has experience in treating treatment-resistant mood disorders with electroconvulsive therapy (ECT) and transcranial magnetic stimulation (TMS).‍

Elizabeth Tiffany, MD

Staff Psychiatrist

Dr Elizabeth Tiffany is a compassionate psychiatrist who is boarded in psychiatry, addiction, and addiction medicine. She completed her residency in Psychiatry and Fellowship in Addiction Psychiatry at the University of Cincinnati in Ohio. Since completing fellowship in 2016, she has held several positions with the Department of Veterans' Affairs treating veterans with addictions and other mental health conditions. She has also worked for the University of Cincinnati providing psychiatric and addictions treatment to those admitted to the hospital for other medical concerns. She is passionate about education and was the addiction psychiatry fellowship director at both Oregon Health and Science University and University of Cincinnati, assisted in training general psychiatrists at both programs, and has given talks to physicians in various specialties to promote treatment of mental health concerns. While considered a well-rounded psychiatrist who enjoys working with patients from a variety of backgrounds and situations, she has extensive experience working with patients who have experienced trauma and those who have psychiatric concerns and may be using more alcohol or cannabis than they would prefer. Dr Tiffany is a personable, nonjudgmental psychiatrist who will collaborate with you to develop a personalized treatment plan that combines medication management with psychotherapeutic tools for a more whole person approach to your recovery.

Gerald Matthews, MD

Staff Psychiatrist

Background and credentials

Dr. Gerald Matthews is a board-certified adult psychiatrist. He earned his medical degree from the University of Louisville School of Medicine in Louisville, KY. Following medical school, he entered active duty service in the U.S. Army, where he completed his psychiatry residency at Tripler Army Medical Center in Honolulu, HI. After completing his training, he practiced as a staff psychiatrist at Fort Hood, TX, fulfilling his service obligation.

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Treatment approach

Dr. Matthews specializes in medication management, working primarily with adult patients in an outpatient setting. While his primary focus is pharmacological treatment, he frequently collaborates with therapists to provide comprehensive care when indicated. He has extensive experience treating civilians, active-duty military personnel, and veterans, addressing conditions such as mood and anxiety disorders, psychosis, and trauma-related disorders.

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What you can expect in a first visit

During the first visit, patients can expect a thorough psychiatric evaluation where Dr. Matthews takes time to understand their history, symptoms, and treatment goals. He provides a structured yet compassionate approach to care, discussing medication options and potential therapeutic interventions. For patients who may benefit from additional therapy, he collaborates with therapists to ensure a well-rounded treatment plan tailored to each individual's needs.

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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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Leslie Davis, LCSW

Staff Therapist

Dr. Leslie Davis became a psychotherapist because she believes that mental health shapes and influences various aspects of life. Mental health is considered vital! She has been a Doctor of Social Work since 2021 and a Licensed Clinical Social Worker since 2019, with experience supporting children, adolescents, young adults, and adults with concerns such as trauma, substance abuse, intimate partner violence, depression, anxiety, PTSD, mood disorders, marital issues, and more. She has extensive experience in various settings including inpatient, outpatient, partial hospitalization (PHP), intensive outpatient (IOP), school settings, community-based settings, and emergency departments.‍Dr. Leslie Davis does not see her role as a therapist as needing to "save the world” or "empower” clients. Instead, she believes in working alongside clients to help them identify tools within themselves and community resources to successfully achieve their goals. The types of therapy offered include, but are not limited to, Cognitive-Behavioral Therapy (CBT), Culturally Sensitive Therapy, Dialectical Behavior Therapy (DBT), Motivational Interviewing, Multicultural Therapy, Person-Centered Therapy, and Solution-Focused Therapy. Alongside the use of evidenced-based practices and culturally informed care, Dr. Leslie Davis has developed a proven approach for helping clients (a) identify the root cause of their challenges and (b) create a tailored plan that leads to measurable progress.

David Guggenheim, PsyD

National Director of Psychotherapy

Dr. David Guggenheim is an experienced clinical psychologist and health care administrator. He has worked with patients at different stages of life, including children, adolescents, and adults, and he has treated patients living with a wide range of mental health conditions, including anxiety, depression, post-traumatic stress disorder (PTSD), substance use, and attention-deficit hyperactivity disorder. Dr. Guggenheim has specific training in Trauma-Focused Cognitive Behavioral Therapy, Motivational Interviewing, and foundational training in dialectical behavioral therapy. Prior to joining Talkiatry, Dr. Guggenheim served as the Chief Behavioral Health Officer at Callen-Lorde Community Health Center in New York City, specializing in LGBTQ+ health care. In that role, he oversaw teams of providers including psychiatrists, psychologists, and social workers, who collectively provided care to thousands of patients in the New York metropolitan area. While at Callen-Lorde, he also served as co-chair for the behavioral health subcommittee of the Community Health Center Association of New York State; worked as an Adjunct Professor at Post University; and performed volunteer clinical work at the Weill Cornell Center for Human Rights. Before joining Callen-Lorde, Dr. Guggenheim worked as Associate Chief Behavioral Health Officer at Community Health Center, Inc., a federally qualified health center in Connecticut. A recognized expert, Dr. Guggenheim has delivered lectures to audiences ranging from medical schools to corporate executives, and he has been quoted in national media including The Advocate, Yahoo Finance, and Teen Vogue. Dr. Guggenheim has also been honored with an Early Career Achievement Award from the American Psychological Association in 2016. Dr. Guggenheim received his Bachelor of Arts from the University of Connecticut in 2002 and his Doctor of Psychology in Clinical Psychology from the American School of Professional Psychology at Argosy University/Washington, DC in 2009.

Neena Mathew, PMHNP

Staff Nurse Practitioner

Neena Tressa Mathew has forged an impressive career in the medical field, with a pivotal focus on extensive mental health expertise. She is dually board certified as a Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) and Family Nurse Practitioner (FNP-BC), for care across all ages. She is fluent in English, Hindi, and Malayalam languages. Licensed in Florida, New York, Texas, and Georgia, she offers a patient-centered approach blending her experience and certifications. Her profound dedication in addressing mental health issues is evident through her hands-on experience in assessing, treating, and evaluating patients across a spectrum of psychiatric disorders including (but not limited to) ADHD, Depression, Anxiety, PTSD, OCD, Schizophrenia and Bipolar Disorders. She has excelled her services at Mindful Behavioral Healthcare, Advent Health Hospital as well as Park Place Behavioral Health care. Neena's international experience includes roles in Canada, enhancing expertise in gero-psychiatric care. She had the privilege of working in many practice areas, including, addictions medicine, grief counseling, and primary care.

Her academic credentials include a Post Master’s Certification from Florida State University and a Master of Science from D’Youville College, Buffalo NY. She holds a Bachelor of Science in Nursing from Delhi University and a Master’s Degree in Social Work from the Delhi School of Social Work. Professional affiliations with organizations like the American Nurses Association underscore her commitment to the profession. With the academic, leadership and research abilities Neena, was invited to be a member at the Sigma Theta Tau International (STTI) as a graduate nursing student for demonstrating excellence in scholarship and exhibiting exceptional achievements in nursing. Neena has authored in several US Nursing Journals and Nursing Magazines. She has published / presented various research articles in international peer reviewed journals and has an active profile on Google scholar and Research Gate.

Neena's style of practice can be traditional (prescribing up to date psychiatric medications) or alternative medicine (natural treatments including but not limited to vitamins, supplements, lifestyle modification, nutrition, exercise and stress management). She believes in the mind/body/spiritual connection, and that, we are made up as a whole person and not a series of parts, just as Hippocrates "The Father of Medicine." Her holistic approach to mental health care shines through her adept management of psychotropic medications and integration of psychotherapy including supportive psychotherapy, CBT and psychodynamic therapy. Her main area of interest is the mind, body, and spiritual connection pertaining to their relationship and its role in one's health and healing. Neena has always enjoyed helping people and finds her work very rewarding. Going beyond mere diagnosis and treatment, Neena conducts meticulous examinations and mental health assessments to ensure precise identification of psychiatric illnesses. What sets her apart is his commitment to patient education is that she empowers individuals and their families with comprehensive knowledge about their conditions and treatment plans, encompassing the prescription of medications within a broader care strategy. Neena’s extensive mental health experience is complemented by her role as a clinical instructor, where she shares her insights and knowledge. This dual commitment to clinical practice and education underscores her multifaceted contribution to healthcare, emphasizing not only in treatment but also in the empowerment and education of individuals navigating their mental health journey makes her a versatile healthcare provider.

Neena's hobbies include reading, writing, beach activities, hiking and traveling with family. Her longtime hobby has always been to involve in charitable activities through the Lion’s club. “Give and it will be given to you. A good measure, pressed down, shake together and running over, will be poured into your lap. For with the measure you use, it will be measured to you.” (Luke 6:32). It is in giving that we truly receive!

Jennifer DeSetto, PMHNP

Staff Nurse Practitioner

Jennifer DeSetto, RN, MSN, PMHNP-BC is a dedicated and compassionate Psychiatric Nurse Practitioner with extensive experience in a variety of settings, including inpatient psychiatry, private practice, and emergency psychiatry. Since beginning her practice in 2013, she has been committed to providing exceptional care for individuals facing mental health challenges.

She holds a Master of Science in Nursing as a Psychiatric Nurse Practitioner, and she is board-certified by the American Nurses Credentialing Center (ANCC). Over the years, Jennifer has honed her skills in treating a broad spectrum of mental health conditions, with a special focus on adolescents, postpartum depression, and post-traumatic stress disorder (PTSD).

Jennifer is deeply passionate about empowering her patients and believes in a non-judgmental, laid-back approach that ensures a welcoming and comfortable space for healing. Her treatment style is individualized and tailored to each person’s specific needs, providing a thorough and holistic approach to care. She emphasizes building strong, trusting relationships with her patients, ensuring that each individual feels heard, respected, and supported on their mental health journey.

Her diverse background working across various healthcare environments has equipped her with a broad understanding of mental health care and a flexible approach to treatment, allowing her to adapt her strategies to meet the unique challenges faced by those she serves. With her wealth of experience and commitment to individualized care, Jennifer DeSetto, PMHNP-BC continues to be a trusted provider in the mental health field, dedicated to helping her patients lead healthier, more fulfilling lives.

Prit Patel, MD

Staff Psychiatrist

Dr. Prit Patel is a board-certified adult psychiatrist. He obtained his medical degree from the University of South Florida and subsequently completed his residency training at the University of Texas at Austin and Northwell Health's Zucker Hillside Hospital. During his training, Dr. Patel also served as chief resident of Zucker's Hillside Hospital's outpatient psychiatric department. Following his training, Dr. Patel has previously worked at New York Presbyterian's Gracie Square Hospital, where he served as an inpatient psychiatrist treating a variety of mental health conditions, utilizing a combination of medication management and therapeutic techniques in helping those experiencing distress due to their conditions. Throughout his training and career thus far, Dr. Patel has received several awards for his clinical care and contribution to medical and psychiatric education, such as Zucker Hillside's Psychiatric Educator award. Dr. Patel has also contributed to medical research in the domains of psychiatry and LGBTQ+ healthcare .Dr. Patel has an interest in not only treating disorders but also helping patients improve their overall well-being. He treats a variety of conditions including depression, bipolar disorder, anxiety disorders, obsessive-compulsive disorders, and trauma-related disorders, through the use of medication and therapy. He has particular experience and interest in treating LGBTQ+ patients as well as young professionals and young adults.

John Bellavia, MD

Staff Psychiatrist

Dr. Bellavia is an experienced board-certified psychiatrist who specializes in adult psychiatry. He was a faculty member of the University of Washington School of Medicine in Seattle for 8 years and has been a medical director and attending psychiatrist in several clinical settings including academic medical centers, outpatient private practice and consultation. Dr Bellavia works collaboratively with each patient to identify presenting problems and stressors and utilizes evidence-based medication treatments along with individualized supportive and short-term psychotherapy strategies to reduce symptoms and improve function. If clinically indicated, he may recommend adding a psychotherapist to your care team. Dr. Bellavia has a particular interest in treating psychiatric conditions including, but not limited to, depression and bipolar disorders, ADHD, anxiety disorders, and adjustment problems. He has extensive experience working with individuals from diverse backgrounds, such as university students, creative and tech professionals, and expat communities. He uses a relaxed, nonjudgmental, empathic approach that is holistic and considers the biological, psychological, social, and cultural factors that impact mental well-being.

Alexis Lanzillo, LPC

Education and training

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