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Theresa Colberg, MD

Staff Psychiatrist
Languages
English
SPECIALTIES
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Phobias
Tics/Tourette Syndrome

Education and training

  • Temple Medical School, MD
  • Mount Sinai Beth Israel, Residency

Get to know

Theresa Colberg, MD

Dr. Theresa Colberg is a board certified adult psychiatrist. She offers guidance with navigating difficult and painful emotions that may result from stressful life situations, such as the loss of or separation from a loved one, work related stressors, burn out, adult and childhood trauma, OCD and mood disorders including major depressive disorder, bipolar disorder, and various anxiety disorders. Within a safe, and supportive working relationship, Dr. Colberg will strive to reach an understanding of your unique situation, identify the issues that are interfering with progress, and develop a plan to better identify and achieve your goals.

Previous to joining Talkiatry, Dr. Colberg served as a clinical psychiatrist for the VA Healthcare System, providing care for veterans with a predominant focus on treatment of post traumatic stress disorder. She has also worked collaboratively as an integrated psychiatrist for a primary care FQHC, treating primarily trauma and stressor related disorders within a primary care setting.

Dr. Colberg completed her Psychiatry Residency from Mount Sinai-Beth Israel in New York City and obtained her medical degree from Temple Medical School in Philadelphia. She offers 60-minute initial appointments and 30-minute follow-up appointments, and she won't hesitate to collaborate with other mental health experts as necessary to better support your needs.

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Melissa Medina, LCSW

Staff Therapist

Melissa Medina, LCSW, began her journey in mental healthcare with a Bachelor’s in Psychology followed by a Master of Social Work degree. From 2015 to 2018, she completed her clinical hours at a community mental health agency in Los Angeles, where she gained experience working with diverse populations facing complex challenges. Melissa’s therapeutic approach integrates psychodynamic, cognitive behavioral, interpersonal, strengths-based, dialectical behavioral, and EMDR modalities. She is dedicated to providing culturally sensitive, neurodivergent-friendly, person-centered care to support individuals and families navigating trauma, anxiety, depression, mood disorders, panic attacks, grief, family conflict, and life transitions.

Melissa believes therapy is both a journey and a destination. She takes an eclectic approach, tailoring interventions and communication to best fit each patient’s needs and preferences. Patients can expect an atmosphere of warmth, empathy, and collaboration. Through motivational interviewing and narrative techniques, Melissa helps individuals articulate their stories, identify strengths, and reframe challenges as opportunities for growth. She is committed to meeting patients where they are while supporting them in reaching their goals.

Melissa’s process begins with building rapport, listening to each patient’s story, and understanding their unique needs and hopes for therapy. Early sessions focus on creating a safe, supportive space while developing a treatment plan tailored to the individual. Patients can expect to gain fresh perspectives, practical coping strategies, and deeper self-awareness. Melissa’s goal is for patients to feel heard, understood, and empowered as they strengthen relationships, build resilience, and move toward a greater sense of fulfillment.

Nicholas Tamoria, MD

Chief Psychiatrist

Dr. Tamoria is a California native whose career has taken him around the country. As a medical student at Temple School of Medicine in Philadelphia, PA he worked in a culturally diverse, urban community. He was Chief Resident at the “President’s Hospital” in Washington DC and spent the first part of his career serving as an active-duty Navy psychiatrist helping servicemembers and veterans. After the Navy, he returned west to WA whereas a Medical Director he led one of the state’s most successful behavioral health programs through COVID and into the telehealth revolution. Now he serves as Talkiatry’s first West Coast Chief leading and supporting psychiatrists across the western US.

Dr. Tamoria works with adults to diagnose and treat a wide variety of mental health conditions including Depression, Anxiety, ADHD, Bipolar Disorder, PTSD, and more. He uses a combination of medication management and psychotherapy treatment to help patients improve and thrive. He is well experienced in caring for patients with complex histories or co-morbid medical conditions.

In the first appointment with Dr. Tamoria he completes a comprehensive evaluation of mental health symptoms, medical history, social supports, and stressors. He works collaboratively with patients to develop a treatment plan that may include lab tests, managing medications, initiating psychotherapy, or referring to other specialists. Over time he builds on the patient’s strengths and resilience to lead to recovery.

Elizabeth Vah, LCSW

Staff Therapist

Elizabeth Vah, LCSW, graduated from the University of Texas at Austin in 2008 with a master’s degree in clinical social work. She completed her internship at Seton Medical Center, gaining experience in the emergency room and specialty clinics. Elizabeth has worked in both inpatient and outpatient settings and has training in DBT, CBT, mindfulness, solution-focused, and person-centered counseling.

Elizabeth takes a collaborative approach, partnering with patients to clarify goals and create a roadmap for growth. She has supported individuals from diverse backgrounds facing anxiety, depression, grief, life transitions, interpersonal challenges, and severe mental illness. Her approach blends evidence-based therapies with individualized care, emphasizing a trusting, supportive relationship and a safe, nonjudgmental environment.

In the first session, Elizabeth creates a welcoming space to discuss challenges, goals, and personal history, reviewing confidentiality and treatment structure. Together, she and the patient develop a personalized plan. Ongoing sessions focus on exploring thoughts and feelings, identifying patterns, and practicing skills to support meaningful change, with regular goal review and reflection on progress.

Mahsa Mousavi, MD

Staff Psychiatrist

Dr. Mousavi holds the position of attending psychiatrist at Talkiatry. She is Board certified in adult psychiatry and has been practicing for over 6 years. Dr. Mousavi's practice focuses on medication management. Typically, she offers this in conjunction with supportive therapy in 30-minute follow up visits. Dr. Mousavi may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. She has completed her residency at Westchester Medical Center/New York Medical College. She has experience of working in private practice at the Institute for Family Therapy in Miami. She has also worked as an outpatient psychiatrist at Montefiore in NY and INOVA outpatient clinic in Virginia.

Gerald Matthews, MD

Staff Psychiatrist

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.

Fang Yang, MD

Staff Psychiatrist

Background and credentials

Dr. Yang is board-certified in both General Psychiatry and Addiction Psychiatry. She received her medical degree from the Medical School of Nanjing University in China and completed her Ph.D. in Neuroscience at the State University of New York in Buffalo. She conducted neuroscience research at Tufts University and Columbia University. Dr. Yang completed her residency in Psychiatry at the University of Texas Health Science Center at Houston – McGovern Medical School (UTHealth) and a fellowship in Addiction Psychiatry at Baylor College of Medicine. She has held academic positions at Baylor College of Medicine, supervising medical students, residents, and physician assistant students.

Treatment approach

Dr. Yang specializes in treating depressive disorders, bipolar disorders, anxiety, substance use disorders, ADHD, and trauma-related disorders. She employs medication management combined with supportive therapy and motivational interviewing techniques. Dr. Yang emphasizes building strong therapeutic relationships, tailoring treatment to each patient's unique goals and needs.

What you can expect in a first visit

In the initial visit, patients can expect a detailed, personalized evaluation by Dr. Yang. She will explore symptoms, medical history, personal goals, and treatment preferences to design an individualized care plan. Patients can expect a compassionate, collaborative approach with clear communication about medication management options and supportive therapeutic strategies aimed at improving their overall well-being.

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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Specialties
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Phobias
Tics/Tourette Syndrome
States
Pennsylvania
New Jersey
New York
Languages
English
Takes insurance
Virtual visits
7 years experience