Karina Eugenio Vargas, LMHC

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Dr. Green (she/her) holds the position of staff psychiatrist at Talkiatry. She is board-certified in adult psychiatry. She has extensive experience in various settings including inpatient, outpatient, consult-liaison, emergency, Veteran, and community-based environments. She is licensed in the states of Maryland, New York, and Virginia. Dr. Green's practice focuses on the integration of medication management and psychotherapy. Her practice style is collaborative to establish trust and build rapport while meeting patient-specific goals. Dr. Green approaches patient care from a holistic perspective that is individualized, evidence-based, and patient-centered. She received her medical degree from the New York Institute of Technology's College of Osteopathic Medicine on Long Island, NY. Her adult residency training was completed at Virginia Commonwealth University (VCU) in Richmond, VA. In addition to general, adult psychiatry, Dr. Green is clinically experienced and interested in treating patients of a wide variety. She is particularly interested in treating patients with mood disorders, anxiety disorders, obsessive compulsive disorder, eating disorders, trauma-related disorders, and personality disorders. Dr. Green enjoys exploring with patients a holistic approach to mental health treatment, which includes a discussion of interpersonal relationships, lifestyle behaviors (exercise, diet, sleep), and self-compassion. ‍**Dr. Green's current practice does not include the use of any controlled substance medication, such as stimulants or benzodiazepines.

Andrew Li, MD

Staff Psychiatrist

Dr. Li is a board-certified adult psychiatrist based in Florida. He has a particular focus on combining supportive psychotherapy techniques with medication management in the treatment of psychiatric conditions. Some conditions he has particular experience in managing include attention/focus difficulties, anxiety, depression and bipolar mood issues, but he is well-versed in addressing a wide variety of diagnoses.

Columban Heo, DO

Staff Psychiatrist

Background and credentials

Dr. Columban Heo is a board-certified psychiatrist. He earned his medical degree from Touro University Nevada and completed his residency at Unity Health White County Medical Center. Dr. Heo further specialized by completing a fellowship in Consultation-Liaison Psychiatry at the Cleveland Clinic, where he gained extensive experience working within multidisciplinary healthcare teams, particularly focused on psychiatric care for patients with complex medical conditions.

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Treatment approach

Dr. Heo specializes in treating a broad range of psychiatric conditions, notably mood and anxiety disorders. He integrates medication management with a holistic, personalized approach to treatment, emphasizing the interconnectedness of mind, body, and spirit. Dr. Heo believes in tailoring treatment plans individually, combining therapy and medications to suit each patient’s unique needs, and highlights the importance of healthy relationships in achieving overall mental health.

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What you can expect in a first visit

Patients visiting Dr. Heo for the first time can expect a comprehensive and personalized assessment that explores not just their psychiatric symptoms but their overall well-being and personal relationships. Dr. Heo prioritizes a holistic evaluation, carefully balancing medication considerations and therapeutic interventions tailored specifically to each patient’s situation and goals. He creates an empathetic, collaborative atmosphere to discuss and develop personalized plans for mental and emotional wellness.

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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.

Jisoo Park, DO

Staff Psychiatrist

Dr. Jisoo Park is a board-certified psychiatrist. She obtained her bachelor's degree from Tufts University, where she double majored in Biopsychology and Art History. She attended medical school at Nova Southeastern University, and completed her psychiatry residency at Stony Brook University Medical Center. After graduating with her residency, she was appointed clinical assistant professor at Renaissance School of Medicine, where she worked at the Treatment Resistant Depression Clinic. She was involved in teaching medical students and residents, and was part of various research studies and publications. Dr. Park treats a variety of psychiatric disorders in adults, including depression, anxiety, and PTSD. She does not treat patients with ADHD. She emphasizes a patient-centered approach and believes that best treatment outcomes result from a strong therapeutic relationship between a patient and a psychiatrist. She offers medication management and therapy through telehealth sessions. She offers sessions in both English and Korean.

Rachel Sherhart, MD

Staff Psychiatrist

Dr. Rachel Sherhart is a board-certified adult psychiatrist who has been in practice for over 4 years. She specializes in medication management with 30-minute follow-up visits. This may be accompanied by elements of supportive therapy, Acceptance and Commitment Therapy (ACT), Dialectical Behavior Therapy (DBT), and psychodynamic therapy. If more in-depth work is needed, she may refer patients to a collaborating psychotherapist. ‍Dr. Sherhart received her medical degree from Texas A&M Health Science Center and completed her psychiatry residency training at the University of Texas Southwestern in Dallas, Texas. She has served as faculty at Texas A&M University College of Medicine, providing education and supervision for psychiatry residents and medical students. ‍She has experience treating adult patients from many walks of life with a broad range of diagnoses, including depression, anxiety, bipolar disorder, ADHD, and trauma-related disorders. Dr. Sherhart has a passion for providing excellent patient care and education. Her goal is for patients to feel heard and find a safe place to discuss their concerns. She is motivated to work collaboratively with patients to find a solution that best fits their treatment goals and improves their overall quality of life.‍

Nicole Estevez, LMHC

Staff Licensed Mental Health Counselor

Nicole Estevez is a licensed mental health counselor in New York and an out-of-state telehealth provider in Florida. She received her Master of Mental Health Counseling from Alliance Graduate School of Counseling (now Alliance University). Nicole has 9 years of experience providing client-centered individual and family therapy services to a wide variety of clients. Nicole has worked in a variety of settings including an outpatient community clinic, in-home family therapy, treating undocumented minors with trauma history, and telehealth. Nicole has experience working with clients who are experiencing anxiety, depression, bipolar disorder, borderline personality disorder, grief, post traumatic stress disorder, and other mental health concerns. Over the years in the mental health field, she believes that the best approach to therapy is a collaborative process with the client to assist in achieving their goals. Nicole has experience with modalities including cognitive behavioral therapy, psychodynamic, motivational interviewing, and dialectical behavioral therapy.

Mona Ismail, MD

Staff Psychiatrist

Dr. Ismail is double board-certified by the American Board of Psychiatry and Neurology in both Adult Psychiatry and Child and Adolescent Psychiatry. She earned her medical degree from Cairo University, where she also completed her neurology residency at Cairo University Hospitals. Following this, she pursued psychiatric training at New York Medical College at St. Vincent’s Hospitals, where she was appointed Chief Resident and recognized as Resident of the Year.

Dr. Ismail further specialized with a fellowship in Child and Adolescent Psychiatry at UMDNJ/Rutgers Robert Wood Johnson Medical School. Her career includes multiple leadership roles, notably serving as Chief of the Child and Adolescent Partial Hospital Programs (PHP) at Rutgers University in Newark, NJ, where she provided direct care to young patients. She has also held Medical Director positions across various clinical settings, including child and adolescent inpatient units, outpatient programs, and intensive outpatient services for both adolescents and adults with mental health and co-occurring substance use disorders.

An active educator, Dr. Ismail has been a teaching faculty member, delivering lectures and providing supervision and evaluations for medical residents and child and adolescent psychiatry fellows. Her academic contributions extend to research, where she has served as a principal investigator on multiple studies.

Throughout her career in leadership and teaching, Dr. Ismail maintained an integrative private practice in New Jersey, serving residents of the NJ and NY metropolitan areas before relocating to North Carolina.

Dr. Ismail is passionate about integrative medicine, which combines evidence-based alternative therapies with conventional treatments to optimize outcomes. Her approach focuses on promoting overall wellness, keeping both the body and mind in harmony.

During the diagnostic evaluation, Dr. Ismail will review your medical history and past treatments to develop a comprehensive, personalized treatment plan that prioritizes your overall wellness. In addition to medication management, she incorporates supportive, cognitive, or psychodynamic psychotherapy during follow-up visits, as time allows. When appropriate, she may also recommend referrals to specialized psychotherapists to address your individual needs as part of a holistic treatment approach.

Gusta Shurdut, MD

Staff Psychiatrist

Dr.Gusta Shurdut is a board-certified adult psychiatrist with 8 year experience. She completed her medical training at SUNY Downstate Medical center in Brooklyn, and psychiatric residency at Mount Sinai Beth Israel, NYC. After her residency, she worked as an assistant professor at Mount Sinai Psychiatric Ambulatory Services. Dr.Shurdut graduated magna cum laude from Columbia University with an undergraduate degree in biology. Prior to moving to New York, she obtained a degree in communications and public relations and worked as a journalist at her hometown in Latvia.

Dr.Shurdut believes in individual, empathetic, and collaborative treatment approach. Through her residency and work experiences, Dr.Shurdut has developed expertise to treat various mental health conditions including mood disorders, anxiety, OCD, ADHD, PTSD. While her primary focus is medication management, she also incorporates CBT, psychodynamic and supportive psychotherapy.

Dr.Shurdut’s goal is empowering patients to participate in their healthcare choices. As a psychiatrist, she feels honored to witness the complexity of the human experience, and curious to explore the factors that contribute to it. On intake appointment, she will take time to understand your concern, provide assessment, discuss treatment options and collaboratively decide on most appropriate action. The follow up appointments are usually 30 minutes and include a psychotherapy modality.

Molly Fels, MD

Staff Psychiatrist

Dr. Molly Fels is a board-certified psychiatrist. She completed her undergraduate education at Barnard College followed by medical school at Rutgers-Robert Wood Johnson Medical School. Dr Fels then completed her psychiatry residency training at Mount Sinai Beth Israel. She has previously worked in the Mount Sinai health system in the psychiatric emergency department and inpatient psychiatric unit. Dr. Fels has an interest in treating patients with a wide variety of psychiatric disorders including depression, anxiety, ADHD, and in working with patients who have experienced trauma. She believes in addressing holistic and lifestyle factors with her patients, including nutrition and sleep, in addition to pharmacology. Dr. Fels combines medication management and supportive psychotherapy to provide well-rounded and comprehensive care to her patients and prioritizes involving patients actively in each step of their psychiatric treatment.

Zeshen Wu, MD

Staff Psychiatrist

Dr. Zeshen Wu is an ABPN board certified psychiatrist with more than 10 years of experience. He completed his undergraduate studies at the University of Texas at Austin, followed by medical school at the University of Texas Medical Branch. He completed residency in psychiatry at Dell Medical School in Austin. Dr. Wu focuses on effective and safe medication management as well as supportive and psychodynamic therapy in his practice. He likes to focus on a gentle, collaborative, and patient-centered approach. He specializes in forming individualized pharmacological treatments as well as taking time to explore stressors and psychological issues to achieve complete and comprehensive care. Dr. Wu had previously served as assistant professor of psychiatry at UTHealth McGovern Medical School in Houston and has been involved in many years of teaching and mentorship. At UTHealth, he also served as clinical faculty in one of the nation's largest inpatient psychiatric campuses and is experienced in treating a wide range of adult mental illnesses including mood disorders, anxiety, OCD, and ADHD.

Carly Frix-Rhyne, LPC

Staff Therapist, Clinical Lead

Carly Frix-Rhyne is a Licensed Professional Counselor (LPC), in both Texas and Arkansas, who has extensive experience working in the mental health field. She has worked directly with clients of various demographics, living with a variety of mental health conditions. Carly attended undergraduate and graduate school in her hometown of Texarkana, Texas at Texas A&M University - Texarkana. She completed her practicum and internship working as a therapist in therapeutic foster care, with children, teens, foster parents, and biological families. Carly has been practicing for 7 years as a LPC, focusing on individuals working to cope with trauma, stressful life events, anxiety, depression, and issues coping with and communicating their own needs. Carly has worked for community mental health agencies, non-profit agencies, and private practice organizations. Much of Carly's past work involves providing therapy services to children, teens, and adults who survived abuse/trauma. Carly enjoys working with clients of all ages and with a variety of different presenting mental health needs. She uses different techniques including cognitive behavioral approaches and attachment-based approaches, while maintaining a person-centered theoretical orientation with all clients. Carly utilizes a range of therapeutic tools in hopes of providing clients with practical skills they can begin using immediately. She believes in meeting clients exactly where they are and helping them understand their own needs.

Michael Robbins, PMHNP

Staff Nurse Practitioner

Michael Robbins is a psychiatric nurse practitioner with over 17 years of experience specializing in psychiatric medication management. He earned his MSN from the University of Tennessee in 2006. His career spans various settings, including acute inpatient care, private practice, community mental health, and substance abuse treatment. Michael treats conditions such as depression, anxiety, PTSD, OCD, bipolar disorder, and ADHD. He has worked both remotely and in-person, adapting to the evolving healthcare landscape. Michael is known for his expertise in psychopharmacology, tailoring treatment plans to each patient’s needs while minimizing side effects. His compassionate and patient-centered approach has made him a trusted provider in the mental health community.

Karina Eugenio Vargas, LMHC

Education and training

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