Krista Alexander , MD

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Dr. Alexander Wittenberg is a board-certified adult psychiatrist. He received his undergraduate degree from Cornell University, majoring in Human Biology, Health, and Society. He earned his medical degree from the New York Institute of Technology College of Osteopathic Medicine, where he was a member of the Psi Sigma Alpha Osteopathic Honor Society. As chief resident at Mount Sinai Beth Israel, he gained extensive experience working in outpatient settings and managing patient care at one of New York City's busiest clinics. Dr. Wittenberg has expertise in treating a wide range of mental health conditions, including depressive disorders, anxiety disorders, bipolar disorder, trauma and stressor-related disorders, and OCD.

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Treatment approach

Dr. Wittenberg offers highly individualized and empathic treatment, primarily focusing on medication management. He frequently recommends integrating therapy into treatment plans and may suggest collaborating with a therapist. Dr. Wittenberg prioritizes a holistic approach, emphasizing overall well-being alongside symptom relief. He encourages the incorporation of mindfulness, self-compassion, exercise, nutrition, and attention to interpersonal relationships into his treatment strategy.

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What you can expect in a first visit

During an initial visit with Dr. Wittenberg, patients can anticipate a collaborative, patient-centered, and non-judgmental environment designed to foster a meaningful therapeutic relationship. He will thoroughly discuss individual concerns and treatment goals, exploring potential therapeutic interventions, including medication management and holistic strategies to support mental health and overall wellness.

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.

Elena Perea, MD

Staff Psychiatrist

Dr. Elena Perea is a board-certified psychiatrist. She completed her undergraduate training at Wake Forest University followed by medical school and residency training at The University of North Carolina at Chapel Hill (UNC).

Dr. Perea holds an adjunct academic appointment at UNC and has been involved in medical education for her entire career. She most recently served as Residency Program Director for the Mountain Area Health Education Center (MAHEC) psychiatry residency in Asheville, NC. She remains involved in didactic education there for both residents and medical students.

She has a genuine interest in treating a vast array of psychiatric disorders including depression, anxiety, bipolar disorders, post-traumatic stress disorders and obsessive compulsive and related disorders. She is a skilled psychopharmacologist and interested in the mind-body connection. She believes physical health greatly affects mental health and vice versa and loves helping patients with medical comorbidities to feel well.

Patients looking for a psychiatrist will find that Dr. Perea has a comprehensive approach to diagnosis and management of her patients. She believes in the principle that body and mind are interconnected and utilizes psychoeducation and psychotherapeutic approaches in addition to medications for total wellness.

Nidhi Sharoha, DO

Staff Psychiatrist

Dr. Nidhi Sharoha is a double board certified psychiatrist in Psychiatry and Consultation Liaison Psychiatry. She completed her undergraduate training at Stony Brook University followed by medical school at New York Institute of Technology College of Osteopathic Medicine. She has completed both a Residency in Psychiatry and Fellowship in Consultation Liaison Psychiatry at Nassau University Medical Center. Dr. Sharoha has held academic appointments at Stony Brook University Hospital, practicing as a consultant psychiatrist and Associate Director of Consultation Liaison Psychiatry Fellowship. She has been deeply involved in teaching throughout her years. She has a genuine interest in treating a vast array of psychiatric disorders including depression, anxiety, bipolar disorders, post-traumatic stress disorders, and obsessive compulsive and related disorders. She also has experience in treating patients with medical comorbidities and has training in issues related to women's health. Patients looking for a psychiatric provider will find that Dr. Sharoha has a gentle approach to diagnosis and management of her patients. She believes in the principle that body and mind are interconnected, which allows her to provide comprehensive care to all of her patients.

Raquel Weinum, LCSW

Staff Licensed Clinical Social Worker

Raquel Weinum is a licensed clinical social worker. Her career in the field has spanned over 20 years and includes work with adults, adolescents, and children from diverse populations and experiences. She has treated a wide range of symptoms and challenges, including but not limited to, depression and other mood disorders, anxiety, chronic stress, trauma, difficulty with relationships, family conflicts, and loss. ‍Her style is warm and engaging. She considers the role of the therapist to be collaborative. As a therapist she aims to create a safe non-judgmental space for self-exploration, discovery, and healing. The goals in the therapeutic process may involve developing new skills to cope with emotional pain, learning to set new boundaries in relationships, or finding more meaning in life. She utilizes a wide range of approaches, including cognitive behavioral therapy, motivational interviewing, narrative therapy, relational and psychodynamic approaches, and mindfulness and embodiment work. Regardless of the modality, her work is always trauma informed and strength-based. ‍Ms. Weinum received her Master's degree in Social Work from Fordham University and her BS in psychology from Brooklyn College. She has worked in varied settings including hospitals, community mental health/substance abuse clinics, and home-based crisis intervention services. She has provided individual and group psychotherapy, and has served in supervisory/administrative roles throughout her career.‍

Lisa Citarella, LPC

Staff Licensed Professional Counselor

Lisa is a Licensed Professional Counselor in the state of Pennsylvania. She attended Connecticut College for her undergraduate work and the College of St. Joseph for graduate school. She has worked in the mental health field for 18 years, in a variety of settings including homes, communities, schools, and offices. During that time, she has worked as a case manager, one-on-one supporter, family therapist, and outpatient therapist. Lisa's clients have included people from diverse cultural and economic backgrounds. She particularly enjoys working with families, adolescents and young adults, and with the LGBTQIA+ population. Lisa's primary treatment philosophy is that people are doing the best they can with what they know. With supportive listening, care, and education, people can grow and reach their goals. She draws on her knowledge of Cognitive Behavioral Therapy, Dialectical Behavioral Therapy, Internal Family Systems, and mindfulness to deliver personalized care for each client. Lisa is also experienced in working with trauma, and is certified in Trauma-Focused Cognitive-Behavioral Therapy.

Ashley Sharp, LPC/MHSP

Staff Therapist

Ashley Sharp is a Licensed Professional Counselor with Mental Health Service Provider designation, who has experience working in multiple settings within the mental health field including private practice counseling, school-based counseling, and in a behavioral health hospital. This has allowed Ashley to work closely with individuals of various demographics and a wide spectrum of mental health conditions. Ashley obtained her undergraduate degree in psychology from Bryan College in Dayton, TN, and her graduate degree in clinical mental health counseling from Richmont Graduate University in Chattanooga, TN. Ashley has been working in the mental health field for 4 years and focuses on mood and anxiety disorders, as well as personality disorders, challenges in relationship dynamics, and difficult life transitions such as grief and divorce. Ashley tailors her treatment modalities for the greatest benefit of the individual, being considerate of the background and needs of each client. Ashley uses an eclectic approach to therapy founded in Cognitive Behavioral Therapy and incorporates elements of Dialectical Behavior Therapy such as mindfulness, distress tolerance, and emotional regulation.

Michael Watkins, MD

Staff Psychiatrist

Dr. Michael Watkins is a board-certified adult psychiatrist. He completed his residency at The University of Texas Health Science Center at Tyler. In addition to being thoroughly trained in psychopharmacology, Dr. Watkins has also received extensive training in psychotherapy. From traditional psychodynamic therapy to the more modern mindfulness-based dialectical behavior therapy, Dr. Watkins takes the approach that best serves his patients. In addition to being trained in a variety of therapies, Dr. Watkins also employs a positive psychiatry approach which, as well as addressing a patient's symptoms, also focuses on their strengths and how they can be used to overcome adversity. Prior to pursuing a career in psychiatry, Dr. Watkins was a high school math teacher, and prior to that, he was an NCAA Division I college athlete. His teaching and athletic careers have given him a well-rounded perspective on the human experience. Drawing on his academic training and life experiences, Dr. Watkins meets patients where they are at, helps them overcome their obstacles, and serves as a guide and a resource for them on their journey to their desired destination.

Katrina Myers, LPC

Staff Therapist

Katrina Myers has 20 years of education experience in elementary education with behavioral children, children with special needs and ADHD issues. She has been a behavioral interventionist for children and helped parents and educators come up with ways to help children with emotional disturbances turn their lives around. She has 5 years’ experience as an LPC with treating such disorders as bipolar disorder, anxiety, ADHD issues, post-partum, past trauma issues, depression issues, social anxiety issues, divorce and family therapy issues.

Clients looking for a professional counselor will find that Katrina Myers uses a gentle but open communication approach in her counseling techniques. She believes in a varied therapeutic modality approach with uses of Cognitive behavioral therapy, mindfulness approaches, positive psychology, psychodynamic approaches and humanistic therapy. Katrina Myers has genuine care for helping people find their true happiness and joy in life.

Mark Helms, MD

Staff Psychiatrist

Dr. Helms is a graduate of the University of Arizona College of Medicine. He completed his General Psychiatry and Child/Adolescent fellowship training at the University of Texas, Health Science Center at San Antonio. He has over 25 years of experience as a psychiatrist treating patients of all ages (child, adolescent, and adult�including geriatric) while working in a multitude of treatment settings including outpatient clinics and psychiatric hospitals. He also has several years of experience working as a psychiatric consultant for medical-surgical hospitals, seeing an extensive variety of patients on all floors of the hospital from mother-baby to pediatrics, as well as adult patients on the medical and surgical floors. Dr. Helms takes with him into each patient encounter, his wide breadth of experience and his genuine care and concern for each and every individual patient. He provides both medication treatment and talk therapy. He understands that many patients greatly benefit from either short or long term medication treatment; however, he also understands that talk therapy can oftentimes lead to significant, long lasting positive change, personal growth, and improvements in occupational and relationship success. Moreover, patients will always find Dr. Helms encouraging and supportive as they search for greater meaning and purpose in their lives.

Erica Linnell, MD

Staff Psychiatrist

Dr. Erica Linnell is a board-certified adult psychiatrist. Her practice focuses on medication management and supportive therapy. Dr. Linnell is a graduate of Rutgers Robert Wood Johnson Medical School, from which she graduated with Alpha Omega Alpha honors and earned the Glasgow-Rubin Certificate of Commendation for Academic Achievement Award. Dr. Linnell trained in psychiatry residencies at Brown University/Butler Hospital and at Harvard University/Mass General Hospital. During medical school and residency, Dr. Linnell volunteered in community outreach programs that provided preventive health education and clinical services to homeless and under-served populations, taught elementary school children about the importance of healthy eating and physical activity, and hosted monthly support meetings for adolescents living with chronic diseases and their parents to foster connections and mentorship. Dr. Linnell uses a compassionate, affable treatment style in her practice that specializes in psychopharmacology with conjunctive psychotherapy. She has experience in treating patients with depression, anxiety disorders, PTSD, ADHD, and OCD.

Juliet Nichols-Nicolescu, MD

Staff Psychiatrist

Dr. Juliet Nichols has been a diplomate of the American Board of Psychiatry and Neurology since 2002 and has been practicing psychiatry for over 25 years. While an expert in psychopharmacology, Dr. Nichols has an integrative approach to treatment and she often incorporates psychotherapeutic techniques when appropriate, tailoring every treatment to each patient's individual needs. She completed her Psychiatry residency at Stony Brook-SUNY and Geriatric Psychiatry Fellowship at the Albert Einstein School of Medicine. Over the last two decades, Dr. Nichols served as an attending psychiatrist at JT Mather Hospital in Port Jefferson, NY, where she became proficient in delivering stellar psychiatric care in a variety of settings. She specializes in treating adult and geriatric mental illnesses, including: Depression, Anxiety Disorders (eg, OCD, Panic Disorder, GAD, PTSD), ADHD, and Cognitive Disorders in the elderly. Dr. Nichols strives to help her patients gain insights into their inner conflicts, unveil their strengths, accept their limitations, and build their coping skills. Her approach is dynamic, straightforward, and empathic so patients always feel safe, understood, and at ease. She engages the patient to be an active participant in treatment decision-making, creating a strong therapeutic alliance.‍

Christa DeFries, MD

Staff Psychiatrist

Background and credentials

Dr. Christa DeFries is a board-certified Adult Psychiatrist. She earned her medical degree from UT Southwestern Medical School in Dallas, Texas, and completed her residency in Adult Psychiatry at Baylor Scott & White in Temple, Texas. Following residency, Dr. DeFries gained additional experience treating homeless and formerly homeless populations in New York City, particularly focusing on individuals with histories of trauma and substance addiction, prior to joining Talkiatry.

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Treatment approach

Dr. DeFries practices Adult Psychiatry, employing an integrative treatment approach combining medication management, psychotherapeutic methods, and lifestyle modifications. She recognizes that each patient benefits from a personalized mix of these three aspects of care. Dr. DeFries specializes in treating diverse psychiatric conditions, including those related to trauma, substance addictions, and various mental health disorders.

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What you can expect in a first visit

In a first visit with Dr. DeFries, patients can expect a comprehensive evaluation aimed at understanding their individual mental health history, specific concerns, and overall treatment goals. Dr. DeFries emphasizes an individualized approach, carefully exploring the best combination of medication, therapy, and lifestyle adjustments tailored specifically to each patient's needs. Patients can anticipate an empathetic and collaborative environment focused on their personal experiences and goals.

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Why Talkiatry?

Krista Alexander , MD

Education and training

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