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Mark Varela,MD

Staff Psychiatrist
Languages
English
SPECIALTIES
Medication Management
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Perinatal Psychiatry
Postpartum Depression

Education and training

  • Rice University, BS
  • San Antonio College, AS
  • Texas Tech University Health Sciences Center, MD
  • Texas Tech University Health Sciences Center at Odessa, Residency

Get to know

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.

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Megan Wynne, MD

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Dr. Megan Wynne is board certified in adult psychiatry and completed fellowship training in Consultation-Liaison Psychiatry (Psychosomatic Medicine). She has been in practicing psychiatry since 2006. Dr. Wynne completed her medical degree at Drexel University School of Medicine in Philadelphia, PA, her psychiatric residency at Thomas Jefferson University Hospital in Philadelphia, PA and her consultation/liaison psychiatric fellowship at Long Island Jewish Hospital in Queens, NY. She continued to work in Consultation Liaison Psychiatry at North Shore Hospital in NY, before working for nine years at Philadelphia Veterans Administration Hospital as a staff psychiatrist and associate at the University of Pennsylvania University Hospital. During this time, she worked closely with patients struggling with Traumatic Brain Injury, Post Traumatic Stress Disorder, Depression and Anxiety. She acted as an attending psychiatrist in training medical students, psychiatric residents and fellows. Following a move to New Zealand, she worked as lead psychiatrist for Te Puna Waiora, Maori Mental Health team (Indigenous Person mental health clinic) at Counties Manakau District Health Board. She worked with multiple patients facing cultural challenges, as well as psychosocial stressors (poverty, family fragmentation, poor education). During this time, she worked within the indigenous system of mental health, which treats not just emotional or physical issues for a person, but spiritual and familial as well. She has incorporated this into her treatment approach for all patients. Dr. Wynne has always believed that medication must be used in conjunction with psychodynamic therapy, and medical and social supports to most appropriately treat a patient. She offers 30-minute sessions consisting of medication management and brief therapeutic support. She specializes in treating victims of trauma, medical comorbidity.

Sanjna Zadoo, MD

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Dr. Zadoo graduated from the University of Texas at Austin. She attended medical school at Texas Tech University Health Sciences Center and went on to complete her residency at UT Health San Antonio.

Dr. Zadoo is passionate about getting to know her patients and helping them live happier, healthier, and more productive lives. She specializes in treating a wide range of mental health conditions, including depression, anxiety, bipolar disorder, OCD, and trauma-related disorders. Her approach is rooted in empathy, active listening, and shared decision-making. She believes that every patient’s story matters and tailors treatment plans to meet each patient’s needs, values, and goals. By fostering a safe and respectful space, Dr. Zadoo helps patients navigate times of stress, life transitions, behavioral problems, communication issues, relationship difficulties, poor self-esteem, grief, loss, and other concerns.

Dr. Zadoo first completes an initial psychiatric evaluation to establish diagnoses and create a comprehensive plan for treatment. She is passionate about forming a strong therapeutic alliance and empowering patients to improve their lives through a variety of holistic modalities. While medications are a mainstay of psychiatric care, Dr. Zadoo is also skilled at using existential, psychodynamic, cognitive behavioral, and Gestalt psychotherapy techniques.

Peter Hsieh, MD

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Dr. Peter Hsieh has experience practicing in both outpatient and inpatient psychiatric settings. He earned his medical degree from the Zucker School of Medicine at Hofstra/Northwell and completed his psychiatry residency at Zucker SOM at Mather Hospital.

Dr. Hsieh values patient education and shared decision-making. He fosters a nonjudgmental environment where patients feel heard and supported, working collaboratively to develop a treatment plan that fits their goals and needs.

Dr. Hsieh begins with a comprehensive psychiatric evaluation and partners with each patient to create an individualized treatment plan that aligns with their values and evidence-based care. His approach often combines medication management with psychotherapeutic modalities.

Sherra StClair, PMHNP

Staff Nurse Practitioner

Sherra St. Clair is a board-certified Psychiatric Mental Health Nurse Practitioner with over a decade of experience supporting individuals with a wide range of mental health concerns. Her areas of expertise include attention deficit hyperactivity disorder (ADHD), depressive and anxiety disorders, obsessive-compulsive disorder (OCD), bipolar disorder, and trauma-related conditions.

She completed her advanced nursing degree at the University of Wyoming, where she was recognized for her compassionate and welcoming approach to patient care. Before becoming a nurse practitioner, Sherra was inspired to pursue further education while working as part of an inpatient treatment team that included psychiatrists, psychologists, patients, and their families. Witnessing the profound improvements patients experienced after a crisis motivated her to transition toward outpatient and preventative care.

Prior to her nursing career, Sherra worked as a medical illustrator and animator, having studied at the University of Michigan’s medical school. She enjoyed creating educational materials for patients, physicians, and attorneys.

Sherra is passionate about working with individuals of all genders and socioeconomic backgrounds. She uses a collaborative, strengths-based approach that incorporates evidence-based medication management, psychotherapy, and patient education. She believes each person is the expert in their own life and strives to empower individuals to build on their self-worth, progress, and potential.

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Dr. Daniel Weiss is a double board-certified psychiatrist in adult and forensic psychiatry. His expertise is in diagnosing and treating psychiatric conditions, including depression and bipolar spectrum disorders, anxiety, stress and adjustment problems, maternal mental health, OCD, and other disorders. In addition, he has extensive experience working with individuals from diverse backgrounds, college and graduate students, creative professionals, and a range of working adults. Through a supportive psychopharmacologic approach, Dr. Weiss strives to provide a comfortable experience in which doctor and patient work to understand the presenting problems, reduce symptoms, and optimize functioning. In addition, Dr. Weiss encourages concurrent therapy and will communicate with that provider in a collaborative care arrangement. Dr. Weiss previously served as an attending psychiatrist on the staff of Montefiore Medical Center and was formerly a faculty member at the Albert Einstein College of Medicine. Before joining Talkiatry, Dr. Weiss spent a decade working at The New School as the university's staff psychiatrist.

Alexandra Hamlyn, MD

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Dr. Alexandra Hamlyn is a board-certified adult psychiatrist and board-certified child and adolescent psychiatrist. She completed her medical education at Cooper Medical School of Rowan University and then completed her residency in adult psychiatry at Icahn School of Medicine at Mount Sinai Beth Israel. She then went on to complete her child and adolescent psychiatry fellowship at NYU Langone and Bellevue Hospital. During this time, she also taught a course titled Love Actually at NYU School of Arts and Science. During training, Dr. Hamlyn gained extensive clinical experience in psychiatric inpatient, outpatient, and emergency settings, allowing her the opportunity to treat patients of all ages and backgrounds in numerous busy hospitals in New York City. Dr. Hamlyn's primary focus is on medication management, though she also has experience working in four different outpatient clinics where she has gained expertise in multiple different therapy modalities. If appropriate, Dr. Hamlyn will refer you for psychotherapy and collaborate with your therapist to support your care. She appreciates the importance of fostering a meaningful therapeutic relationship, and her goal is to make every patient feel welcomed in a non-judgmental treatment environment. She also takes a holistic approach as she understands that good health creates a sense of overall well-being and improved mental health. She strongly emphasizes the importance of mindfulness, self-compassion, exercise, nutrition, and interpersonal relationships throughout treatment. She looks forward to meeting and working with you.

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Specialties
Medication Management
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Perinatal Psychiatry
Postpartum Depression
States
Texas
Tennessee
Languages
English
Takes insurance
Virtual visits
1 years experience