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Matthew Koller, MD
Background and credentials
Dr. Matthew Koller is a board-certified adult psychiatrist who completed his undergraduate training at The University of Texas at Austin. He earned his medical degree from The University of Texas Health Science Center at San Antonio and completed his general adult psychiatry residency at Baylor College of Medicine in Houston, TX, where he served as Chief Resident of Education in his final year of training.
Treatment approach
Dr. Koller believes that understanding a patient fully is essential before treatment begins, emphasizing a collaborative and patient-centered approach to care. His practice is primarily focused on medication management, but he also incorporates supportive therapy and other therapeutic modalities as needed. He may recommend including a therapist in the treatment plan to ensure comprehensive, well-rounded care. He has experience treating a wide range of mental health conditions, including depression, anxiety, insomnia, personality disorders, bipolar disorder, PTSD, and psychotic disorders.
What you can expect in a first visit
During the first visit, patients can expect a thorough and individualized psychiatric evaluation, where Dr. Koller takes the time to understand their symptoms, history, and treatment goals. He prioritizes open communication and shared decision-making, working closely with patients to develop personalized treatment plans. While medication management is the foundation of his approach, he remains flexible and adaptive, incorporating therapy and other interventions as needed to help patients achieve optimal mental health.
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.
Nina Jaffarzad, MD
Dr. Jaffarzad is a board eligible adult psychiatrist who completed her undergraduate training at the University of Texas at Austin and earned her medical degree at the American University of the Caribbean. She completed her psychiatry residency at Louisiana State University Our Lady of the Lake Psychiatry Residency Program. After completing residency, she worked in an outpatient setting and provided consultation liaison services at Our Lady of the Lake Hospital. Moreover, she held volunteer academic positions supervising and instructing residents and medical students. She has experience treating culturally diverse patient populations with a variety of mental health conditions. Dr. Jaffarzad primarily offers medication management in conjunction with supportive therapy during follow-up visits. She values the importance of open communication and a strong doctor-patient therapeutic alliance.
Sarah Ramos, MD
Dr. Sarah Ramos, MD, has experience practicing in a variety of outpatient settings, including community mental health and military care, serving active-duty service members, their families, and veterans. She earned her medical degree from Vanderbilt School of Medicine and completed psychiatry residency training at the University of California San Diego and Thomas Jefferson University in Philadelphia.
Dr. Ramos values open communication, privacy, and a collaborative approach with her patients. She creates a warm, supportive environment where individuals feel heard, respected, and empowered to participate in their care.
In initial sessions, Dr. Ramos thoroughly assesses patients’ history, concerns, and goals to ensure care is personalized and effective. She develops comprehensive treatment plans that align with each patient’s objectives, providing ongoing support to help them achieve meaningful outcomes.
Jessica Matthews, MD
Background and credentials
Dr. Jessica Matthews is a board-certified general psychiatrist. She earned her medical degree from the University of Texas Health Science Center at San Antonio and completed her psychiatry residency at Tripler Army Medical Center in Honolulu, HI. After her training, she was stationed at Fort Hood, TX, where she worked as a staff physician in the inpatient unit at Carl R. Darnall Army Medical Center and later became the inpatient medical director. She subsequently transitioned to outpatient care, serving as a staff physician and later as clinic chief in the outpatient embedded behavioral health clinics. She continued working as a staff physician after leaving the military.
Treatment approach
Dr. Matthews specializes in medication management, often incorporating supportive and cognitive-behavioral-focused therapy into treatment. Follow-up visits typically last 30 minutes, during which she evaluates progress and adjusts treatment as needed. She takes a collaborative approach and may recommend additional therapy when she believes it will optimize patient outcomes. Her primary areas of focus include treating adults with depression, anxiety, and stress/trauma-related disorders.
What you can expect in a first visit
During the first visit, patients can expect a comprehensive evaluation where Dr. Matthews takes the time to understand their symptoms, history, and treatment goals. She prioritizes a structured yet patient-centered approach, discussing medication management options while considering therapeutic interventions tailored to individual needs. If necessary, she may recommend additional therapy as part of a well-rounded treatment plan.
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.
Alexis Kropf, MD
Dr. Alexis Kropf is a board-certified adult psychiatrist beginning her practice at Talkiatry after four years of clinical experience in residency. Dr. Kropf primarily focuses on providing medication management during 30-minute follow-up visits, weaving in elements of supportive therapy according to the needs of her clients. When additional therapy is indicated to promote recovery, Dr. Kropf may recommend that her clients work with a therapist as part of the treatment team. Dr. Kropf credits her undergraduate education at Southwestern University, a small liberal arts college, for strengthening her curiosity about and dedication to serving others. She received her medical degree from the University of Texas Southwestern Medical Center in Dallas, Texas, where she also completed her psychiatry residency training. During residency, she was involved in medical student education and resident leadership, serving as a chief resident during her final year of training. She also utilized her fluency in Spanish and medical Spanish interpreter training to serve Spanish-speaking patients and to lead Spanish-language group therapy sessions. In addition to psychopharmacology, Dr. Kropf studied psychotherapeutic interventions, including psychodynamic and cognitive behavioral therapies. She has experience working with clients experiencing many different mental health challenges, with a primary clinical focus including the treatment of anxiety, depression, and PTSD.
Holly Shiao, MD
Dr. Holly Shiao is a psychiatrist who has worked extensively with medically complex patients, including a special focus in psycho-oncology with cancer patients. She is double board-certified in Consultation-Liaison Psychiatry and Adult Psychiatry. She has been practicing for over 7 years. Before Talkiatry, Dr. Shiao worked as an Assistant Professor at the University of Washington and Fred Hutchinson Cancer Center. She also worked as an Assistant Professor and was Director of Emergency Psychiatry at the University of Chicago. She has presented nationally at the Academy of Consultation-Liaison Psychiatry and written a book chapter about psycho-oncology. Dr. Shiao attended medical school at John P. and Kathrine G. McGovern Medical School at the University of Texas Health Science Center at Houston. She then completed an Adult Psychiatry residency at the University of Texas Medical Branch at Galveston, followed by a Consultation-Liaison fellowship at Dell Medical School at the University of Texas at Austin. Dr. Shiao is interested in the mind-body connection in overall emotional and mental well-being. She likes to integrate therapy modalities, such as cognitive behavioral therapy, supportive therapy, mindfulness and meditation with medication management to optimize a patient's mental health.
Troy Grantham, MD
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.
Laura Long, MD
Dr. Long is a board-certified psychiatrist with over 14 years of experience treating adult and older adult patients from a wide variety of cultural and socioeconomic backgrounds. Dr. Long's practice focuses primarily on medication management, in addition to supportive and cognitive and behavioral therapy in 30-minute follow-up visits. Sometimes, Dr. Long will suggest that additional therapy be included in your treatment plan in order to provide the best outcome. Dr. Long received her medical degree from the University of Illinois and completed her residency at Northwestern Memorial Hospital in Chicago. She has worked in emergency psychiatry, community psychiatry and private practice and operated her own independent practice in downtown Chicago. Most recently she has spent over 9 years working with veterans with PTSD and other mental health issues. Dr. Long received her B.A. from Yale University, graduating cum laude with a double major in Biology and Literature. She enjoys working with a wide variety of patients of different ages and from different cultural backgrounds and has extensive experience treating mood disorders, anxiety disorders, and PTSD along with comorbid substance use disorders. Dr. Long views patients as partners working toward a common goal of improving patients' quality of life. She also appreciates the strong connection between physical and mental health and provides encouragement and support to patients to make behavioral changes that will benefit both.
Mark Varela,MD
Dr. Mark Varela is a board-certified psychiatrist joining Talkiatry directly out of residency. He focuses primarily on medication management, often accompanied by brief cognitive, motivational, or supportive therapy. He may request that you also meet with a therapist regularly for your benefit. Dr. Varela received his medical degree and general psychiatric residency training both from Texas Tech University Health Sciences Center in West Texas. He treats young adults and adults with a wide variety of mental health concerns, including ADHD, mood disorders, anxiety, OCD, and PTSD.
Osman Athar, MD
Dr. Osman Athar is board certified in General Psychiatry and board eligible in Consult-Liaison Psychiatry. He graduated with a Bachelor of Arts in English from Rice University and McGovern Medical School for his medical doctorate, and went on to complete a psychiatry residency at the University of Texas-Houston, where he served as a chief resident. Afterward, he completed a fellowship in Consult-Liaison Psychiatry at Louisiana State University - Ochsner Medical Center in New Orleans. Dr. Athar has experience in treating a wide variety of conditions, including Major Depression, OCD, Bipolar Disorder, ADHD, Eating Disorders, Anxiety Disorders, PTSD, Substance Use Disorders, Delirium, Dementia, and Mental Disorders due to Another Medical Condition. Dr. Athar primarily focuses on medication management in his practice but will typically also use supportive therapy and cognitive behavioral therapy skills with his patients in order to maximize wellness and recovery. Dr. Athar held an academic appointment at the University of Mississippi Medical Center where he was an assistant professor of psychiatry. He served as the clerkship director for the Medical Neuroscience and Behavior Course during his appointment, which required a six-week course for third-year medical students, which included four weeks of psychiatry education. During his appointment, Dr. Athar was also very active in resident education, focusing on topics related to consult-liaison psychiatry. Dr. Athar has experience in treating a wide variety of conditions, including Major Depression, OCD, Bipolar Disorder, ADHD, Eating Disorders, Anxiety Disorders, PTSD, Substance Use Disorders, Delirium, Dementia, and Mental Disorders due to Another Medical Condition. Dr. Athar primarily focuses on medication management in his practice.
Shuo He, MD
Dr. He is board-certified in adult psychiatry and addiction medicine. She is passionate about providing quality and accessible mental health care while considering each patient's concerns, values, and life circumstances. She received her medical doctorate degree from State University of New York (SUNY) Downstate Medical Center, and completed her psychiatry residency at George Washington University Hospital in DC. Prior to medical school, she completed a Master of Public Health from Yale School of Public Health. Dr. He has special clinical interests in providing trauma-informed and culturally competent care in the treatment of mental health conditions. She has experience working with special populations, such as minorities, immigrants, perinatal women, and LGBTQ+ communities. She holds a certificate from Harvard in Global Mental Health: Trauma and Recovery Program. She currently serves on the Board of Directors for a non-profit organization in Washington DC to prepare people recovering from mental illness to improve their quality of life. Although Dr. He's practice primarily focuses on medication management, she looks forward to getting to know you and incorporating her experiences with insight-oriented therapy in 20 or 30 minute follow-up visits.
Gerald Matthews, MD
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.
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.
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.
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.
Chhavi Chaudhary, MD
Dr. Chhavi Chaudhary is a dual board-certified psychiatrist with subspecialty certification in Child and Adolescent Psychiatry. She completed her fellowship at Washington University in St. Louis, where she also served as Chief Fellow, and her general psychiatry residency at the University of Texas Health Science Center at Tyler. Over the past year, she has provided telehealth psychiatric consultations across emergency rooms and inpatient settings, gaining extensive experience across state hospitals, outpatient clinics, college mental health, preschool, mood disorder, and community health clinics.
Patients working with Dr. Chaudhary can expect a thoughtful and collaborative approach. She emphasizes understanding each individual in the context of their psychosocial development, life experiences, and cultural and societal stressors. She believes mental health cannot be separated from the challenges faced at school, work, within families, and in society at large.
Dr. Chaudhary’s style is warm, curious, and collaborative. She listens carefully, ensuring patients and families feel understood, and works together to create practical, personalized treatment plans. She integrates psychopharmacology with therapy, coping strategies, and resilience-building, aiming for patients to feel supported, empowered, and actively engaged in care that evolves with their needs.
Jacob Kannarkat, MD
Dr. Jacob T. Kannarkat is an adult psychiatrist. Dr. Kannarkat's practice focuses on medication management. In his visits, he uses an integrative approach, blending an empathic, problem-solving orientation with an understanding that the reasons for an individual's condition can be complex. He has experience dealing with many forms of mental illness and works collaboratively with his patients and their other treatment providers in making a plan for recovery. Dr. Kannarkat completed undergraduate studies at the University of Florida. After receiving his medical degree at the University of Miami Miller School of Medicine, Dr. Kannarkat continued for residency at the University of Miami/Jackson Health System. He ultimately completed his training as Chief of Psychiatric Emergency Services at Yale School of Medicine. Dr. Kannarkat has experience working with adults of all ages who are dealing with depression, anxiety, bipolar disorder, PTSD, substance use disorders, and many other conditions.
Rachel Sherhart, MD
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.
Lisa Ekeanyanwu, MD
Background and credentials
Dr. Lisa Ekeanyanwu is a board-eligible psychiatrist who completed her psychiatry residency training at Stanford University. She has gained experience in a wide range of clinical environments, including inpatient and outpatient care, community mental health settings, emergency rooms, telehealth services, and international clinical fieldwork.
Treatment approach
Dr. Ekeanyanwu’s practice is centered on pharmacotherapy, which she integrates with supportive therapy, cognitive behavioral therapy (CBT), and psychodynamic therapy to provide comprehensive psychiatric care. She takes a collaborative and individualized approach, tailoring treatment to meet each patient’s unique goals and improve their overall quality of life. She has a special interest in cultural and micro-cultural influences on mental health and strives to provide culturally competent care that respects each patient’s life experiences and values. When she believes additional therapy may be beneficial, she may recommend incorporating a therapist into the care team.
What you can expect in a first visit
During the first visit, patients can expect a thorough evaluation where Dr. Ekeanyanwu carefully assesses their symptoms, medical history, and personal treatment goals. She fosters a collaborative and patient-centered environment, ensuring that each treatment plan aligns with the patient’s individual needs. She provides medication management along with therapeutic support and, when appropriate, may recommend additional therapy to optimize outcomes. Her approach prioritizes safe, effective, and culturally sensitive care that evolves to support patients throughout different stages of their lives.
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.
Find the right fit fast
Our process was built to help you get the care you’re looking for quickly, with personalized matches and easy online booking.
What psychiatry shouldn’t be
What you get with Talkiatry
Go from searching to scheduled in minutes
Tell us about you
Enter your location, insurance details, and what kind of care you’re looking for.
Get in-network matches
We’ll show you clinicians who take your insurance, specialize in your concerns, and have availability.
Get seen quickly
Great care shouldn’t mean a long wait. Our average time to a first visit is 6 days, not weeks or months.
FAQs
How does Talkiatry work?
Is there a cost to my health system?
Talkiatry is an online psychiatry practice designed to make high-quality mental health care more accessible. We’re 100% virtual, in-network with major insurance plans, and first appointments are typically available in days.
To get started, you’ll complete a quick online assessment to tell us what you’re looking for. We’ll match you with psychiatrists who are licensed in your state, in-network with your insurance, and experienced in treating your concerns. You’ll choose the clinician you’d like to work with.
Your first visit is an in-depth evaluation where your psychiatrist will listen, provide a diagnosis, and work with you to create a treatment plan tailored to your goals and preferences. You’ll continue seeing the same clinician over time, adjusting your plan as your needs evolve. Our team is always here to help with scheduling, insurance, and questions about your care.
Do you provide therapy?
Is there a cost to my health system?
Care at Talkiatry starts with psychiatry. If you already have a Talkiatry psychiatrist, they can refer you to one of our therapists if you’ve decided together that therapy is the right next step. However, you can’t see a Talkiatry therapist if you aren’t already seeing one of our psychiatrists.
What should I do if I’m having an emergency?
Is there a cost to my health system?
Talkiatry does not provide emergency care. If you or someone you know is in crisis, please visit your nearest emergency room, call 911, or call or text the Suicide and Crisis Lifeline at 988.
How much will my visit cost?
Is there a cost to my health system?
The majority of our visits cost patients $25 or less after insurance*, but your exact out-of-pocket cost depends on your plan. The best way to get a clear estimate is to contact your insurance provider directly. Here’s what to ask them:
- Do I have mental health benefits that include outpatient psychiatry?
- Is Talkiatry in-network for my plan?
- What’s my copay or coinsurance for outpatient psychiatry visits?
- Do I have a deductible? If so, how close am I to meeting it?
- Do I have an out-of-pocket maximum? If so, how close am I to reaching it?
- Are virtual or telehealth psychiatry visits covered the same as in-person care?
- Is prior authorization required for outpatient psychiatry?
- Can you provide a cost estimate for an in-network psychiatry visit using CPT code 99204?
- Can you provide a cost estimate for an in-network psychotherapy visit using CPT code 90833?
*Includes all patient costs from 9/24-9/25: copayment, deductible, coinsurance, and $0 payments. Excludes missed appt. fees. Your medical visit costs can vary depending on insurance coverage.
What if I don’t want to take medication?
Is there a cost to my health system?
Psychiatrists are medical doctors, and medication is often part of how they treat mental health conditions. At Talkiatry, your psychiatrist will start by listening and discussing your options with you. Medication is always your choice, but if it’s not something you’re open to considering, we may not be the best fit for ongoing care at this time.
How do I know if Talkiatry can help me?
Is there a cost to my health system?
Talkiatry provides virtual, in-network psychiatric care for people struggling with mild to moderate mental health issues. Here’s what we can help with:
- Anxiety
- ADHD (attention-deficit/hyperactivity disorder)
- Bipolar disorder
- Child & adolescent care
- Depression
- OCD (obsessive-compulsive disorder)
- Pregnancy & postpartum care
- PTSD (post-traumatic stress disorder)
- Substance use disorder
Our goal is to connect you with the best possible care for you. At your first visit, your doctor will confirm whether Talkiatry is the right fit. If they recommend in-person or higher-level care, they’ll guide you to the appropriate resources.
What if my insurance changes from Cigna?
Is there a cost to my health system?
Insurance changes are common, and we’re here to help. Talkiatry is in-network with thousands of plans. If your insurance changes, reach out to a Care Coordinator to update your information and confirm your coverage by calling 833-351-TALK (8255).
Do I still take the assessment if I’m already diagnosed with Postpartum Depression?
Is there a cost to my health system?
Yes. Our online assessment is an important part of how we match you with the right psychiatrist. Your first visit will include a thorough evaluation so your psychiatrist can confirm your diagnosis and tailor your treatment plan to your current needs.
