Corey Greenwald, MD

Dr. Luna Sanchez Rivera holds the position of Staff Psychiatrist at Talkiatry. After completing residency in 2016 at the Ponce Medical School Psychiatry Residency in Puerto Rico, she then moved to North Carolina to complete a subspecialty in Child and Adolescent Psychiatry at Duke University Health System. There, she transitioned into an assistant professor position, focused on structuring pediatric emergency psychiatric services, and helped support the consult and liaison pediatric service. Her years of experience have included working as an integrated care child psychiatrist within outpatient clinics at Duke University Health System, and she trained and worked as a staff psychiatrist at the Inpatient State Facility in North Carolina. She also served in the Dayton Children's Hospital outpatient clinics in Dayton, Ohio, the Appalachian Health System outpatient clinics in Linville, North Carolina, and more recently has been serving the Child and Adolescent inpatient population in Bangor, Maine. Dr. Sanchez Rivera has an approachable style aimed at providing a comprehensive evaluation for all age ranges and is comfortable managing various levels of diagnostic complexities. She provides supportive psychotherapy while using psychodynamic therapy skills to clarify her patient's constellation of symptoms, identify unifying themes and provide thorough psychoeducation throughout the process to drive positive outcomes. She integrates psychodynamic medication management approaches and is adept at family therapy interventions.

Dr. Troy Grantham is a board-certified staff psychiatrist who treats adult patients. A former engineer, Dr. Grantham has developed a passion for guiding patients along the road to recovery. He completed his undergraduate studies at The University of Texas at Austin and later completed medical school and residency in General Psychiatry at The University of Texas Medical Branch at Galveston. Dr. Grantham's practice focuses on medication management. He utilizes a systematic approach to ensure diagnoses are accurate and treatment plans are optimized to each individual patient. His approach is also holistic in nature, often incorporating therapy and lifestyle modification into the treatment plan. Dr. Grantham employs multiple therapeutic approaches in his practice depending on the needs of the patient including supportive therapy, Cognitive Behavioral Therapy (CBT), and Acceptance and Commitment Therapy (ACT). He places great emphasis on psychoeducation so that patients are aware of the nature and prognosis of their conditions as well as the treatment options available. When multiple treatment options are reasonable, Dr. Grantham takes patient preference into account, offering flexibility to the patient experience. He treats a variety of psychiatric disorders with a particular focus on mood disorders, anxiety disorders, obsessive-compulsive disorders, and trauma-related disorders. Please note: Dr. Grantham does not prescribe long-term, daily benzodiazepine medications, however, he is happy to help you taper off of these medications and transition to a safer, long-term medication regimen. In addition, Dr. Grantham does not treat ADHD nor prescribe stimulant medications.

Background and credentials

Dr. Lillian Cole is a board-certified adult psychiatrist. She completed her undergraduate education at the University of North Carolina Wilmington and went on to earn both a master’s in biomedical sciences and a medical degree from Texas Tech University. She completed her psychiatry residency training at the University of Texas Southwestern Medical Center, where she gained experience working with a diverse range of patient populations across different ethnic, socioeconomic, and clinical backgrounds.

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Treatment approach

Dr. Cole emphasizes a holistic, patient-centered approach that integrates evidence-based medicine, psychotherapeutic techniques, lifestyle interventions, and psychoeducation. She believes that listening, collaboration, and compassion are essential to guiding patients toward recovery. Her practice primarily focuses on psychiatric medication management, and she has extensive experience treating mood disorders, anxiety, trauma-related disorders, and substance use disorders. When additional therapy is necessary for the best outcome, she may recommend integrating a therapist into the treatment plan.

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What you can expect in a first visit

Patients can expect a thorough and compassionate initial evaluation, where Dr. Cole takes the time to understand their symptoms, medical history, and treatment goals. She focuses on fostering a strong doctor-patient relationship and collaborates with each patient to create a personalized treatment plan that may include medication management, therapy, and lifestyle interventions. If additional therapy is indicated, she will coordinate with other providers to ensure comprehensive care tailored to the patient’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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Dr. Yolan Shaw earned her medical degree from the University of Texas Medical Branch in Galveston, TX and completed her psychiatry residency at UT Southwestern Medical Center in Dallas, TX. She has experience in both outpatient and inpatient care through her work at the Michael E. DeBakey VA Medical Center in Houston, TX, where she served veterans and caregivers. As a faculty member at Baylor College of Medicine, she also taught and supervised medical students and residents.

Dr. Shaw creates a warm, supportive environment where patients feel heard, understood, and respected. She values open communication and believes in working collaboratively with patients to establish clear, achievable treatment goals that reflect their individual needs and preferences.

Dr. Shaw begins the treatment process by thoroughly understanding each patient's history, concerns, and goals during the initial session. From there, she develops an individualized treatment plan designed to align with those goals and support meaningful progress over time.

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.

Dr. Jennifer Yen is a double board-certified child, adolescent, and adult psychiatrist who has practiced in a variety of settings, including private, community, and academic medicine. She obtained her medical doctorate and general psychiatry residency at the University of Texas Medical School at Houston before completing her child and adolescent psychiatry fellowship at Baylor College of Medicine. She is currently a Clinical Professor of Psychiatry and Behavioral Sciences at Baylor College of Medicine and has authored multiple peer-reviewed publications on pediatric mental health. Dr. Yen is also a Distinguished Fellow of the American Academy of Child and Adolescent Psychiatry and has been on the editorial board of Clinical Psychiatry News. Dr. Yen believes in a collaborative treatment approach that includes use of pharmacology, therapeutic interventions, and support networks. While versed in a broad range of mental disorders, she is most passionate about anxiety, depression, minority mental health, and acculturation and intergenerational conflicts. She enjoys finding creative ways to address ongoing treatment issues, and utilizes digital media in the treatment setting.