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Our Physicians

Our Physicians are Board Eligible or Certified by the American Board of Psychiatry and Neurology. Each physician provides an Initial Comprehensive Psychiatric Evaluation, an Individualized Treatment Plan, and regularly scheduled follow up care for each of their patients.

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Thomas W. Lucas, M.D.

Adult and Geriatric Neuropsychiatry

Thomas W. Lucas, M.D.

Dr. Thomas W Lucas is an Adjunct Professor of Psychiatry at the Texas A&M College of Medicine-Dallas and teaches Neuropsychiatry and Psychopharmacology in the Thorntree based Texas A&M Medical Student clinical clerkship.

Dr. Lucas graduated from Oklahoma State University where he received his Bachelor’s degree in Pre-Medical Sciences. He then completed his Doctorate in Medicine at the University of Oklahoma College of Medicine followed there by his Internship in Neurology, Internal Medicine and Psychiatry. He completed his Residency in Adult Psychiatry at the Sheppard and Enoch Pratt Hospital with affiliate studies in Neurology at the Johns Hopkins University Hospital and School of Medicine, in Baltimore, Maryland.

He is certified in Adult Psychiatry by the American Board of Psychiatry and Neurology and specializes in Adult and Geriatric Neuropsychiatry.

Dr. Lucas served on active duty as a Medical Officer in the United States Army European Command. He then had a long career in the Army Reserve including working as a Special Operations Medical Officer in the 12th Special Forces Group (Airborne). He later received the Meritorious Service Medal for his work as Command Surgeon, 95th Division (Training). He completed his active reserve military service with the rank of Lieutenant Colonel.

He returned to the University of Oklahoma as Clinical Associate Professor of Psychiatry and was awarded the Gordon H. Deckert Chairman’s Award for Sustained Excellence in Medical Teaching for his work as a clerkship site director for third-year medical students as well as for the development of the Advanced Psychopharmacology course for senior residents. Dr. Lucas has served as Hospital Medical Director at several psychiatric hospital facilities in Texas and Oklahoma as well as the Adult Psychiatric Intensive Unit Service Chief at the Timberlawn Mental Health Center in Dallas.

In addition to his active clinical neuropsychiatric practice and long-standing dedication to both pre-and post-graduate medical education, his research interests continue in elucidating and understanding the underlying dysfunctional neuro-inflammatory and electro physiologic brain mechanisms manifesting clinically as neuropsychiatric disorders. His clinical practice now includes an interest in the assessment and treatment of suspected closed head injuries using currently developing technology. He actively provides Transcranial Magnetic Stimulation as well as nasal esketamine (Spravato) for treatment-resistant depression.

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Mihaela V Stoica, M.D.

General Adult, Child, and Adolescent Psychiatry

Mihaela V Stoica, M.D.

Dr. Mihaela V Stoica practices General Adult as well as Child and Adolescent Psychiatry. Her specialty includes Mood Disorders (Depression and Bipolar Disorders), Anxiety Disorders, OCD, ADHD, Autism Spectrum Disorder, Disorders of Infancy and Childhood, Tics Disorder, Other Neuro-Developmental Disorders.

Dr. Stoica completed her Doctorate in Medicine at the University of Medicine and Pharmacy “Carol Davila” in Bucharest, Romania, where she received Government Scholarships for excellent academic results for the duration of her medical school. She then moved to the United States, where she completed her Residency in Adult Psychiatry at Saint Louis University Hospital in a dual program- Neurology and Psychiatry. Following her residency, Dr Stoica completed a fellowship in Child and Adolescent Psychiatry at the University of Miami, Miller School of Medicine in Miami, Florida.

Dr. Stoica is Board Certified in Adult Psychiatry as well as in Child and Adolescent Psychiatry by the American Board of Psychiatry and Neurology.

She is an Adjunct Assistant Professor of Psychiatry at Texas A&M College of Medicine- Dallas Campus and teaches Disorder of Childhood and Adolescence and Eating Disorders in the Thorntree Psychiatric Associates based Texas A&M Medical Student Psychiatric clinical clerkship.

Dr Stoica is fluent in English, Spanish and Romanian.

She has a special interest and is involved in ongoing research in novel therapeutic modalities for both adult and childhood illnesses, including genetic testing, repetitive Transcranial Magnetic Stimulation and nasal esketamine (Spravato).

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Pamela G. Hamilton, M.D.

General Adult Psychiatry

Pamela G. Hamilton, M.D.

Dr. Pamela G. Hamilton is an Adjunct Associate Professor of Psychiatry at the Texas A&M College of Medicine-Dallas Campus, and teaches Anxiety, Obsessive Compulsive, and Trauma Related Stress Disorders in the Thorntree Psychiatric Associates based Texas A&M Medical Student Psychiatric clinical clerkship.

Dr. Hamilton began her undergraduate studies at University of Oklahoma and graduated from the University of Hawaii with a Bachelor of Arts in Psychology with Distinction before completing her Doctorate in Medicine at the University of Oklahoma College of Medicine where she was elected to Alpha Omega Alpha Medical Honor Society. She completed her Psychiatry Residency at the University of Texas Southwestern Medical Center and the University of Oklahoma Medical Center. She later served a clinical instructor in the University of Oklahoma Department of Psychiatry teaching in the Advanced Psychopharmacology course for senior residents.

She is certified in Adult Psychiatry by the American Board of Psychiatry and Neurology and is the Managing Partner for Thorntree Psychiatric Associates.

She has been in active clinical psychiatric practice in Dallas for 34 years and served as the Director of the Adult Psychiatry Unit at the Haven Behavioral Hospital in DeSoto Texas. During this period, she also served as psychiatrist consultant and liaison to community physicians for education and the treatment of psychiatric disorders in women.

Dr. Hamilton practices General Adult Psychiatry. Her practice includes the treatment of Mood Disorders (Major Depressive Disorder and Bipolar Disorder) Anxiety Disorders Post Traumatic Stress Disorders Obsessive-Compulsive Disorders Adjustment Disorders and Attention Deficit Hyperactivity Disorders.

She has a continuing special interest in the diagnosis and treatment of mood disorders in the peri-partum period. Her treatment focus includes psychopharmacologic and psychotherapeutic measures as well as contemporary treatment modalities to include repetitive Transcranial Magnetic Stimulation and nasal esketamine (Spravato).

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Sidney A. Kelt, Jr. M.D.

General Adult and Adolescent Psychiatry

Sidney A. Kelt, Jr. M.D.

Sidney A. Kelt, Jr. M.D is an Adjunct Associate Professor of Psychiatry at the Texas A&M College of Medicine—Dallas, Campus. He serves as the Psychiatry Clerkship Director for the Dallas Campus and provides teaching/lectures to Texas A&M medical students at Thorntree Psychiatric Associates.
Dr. Kelt completed his undergraduate studies at the University of Nebraska—Lincoln with a Bachelor of Science in Microbiology with High Distinction and was elected to the Phi Beta Kappa Honor Society. Dr. Kelt completed his Doctor of Medicine at the University of Nebraska Medical Center where he was elected to the Alpha Omega Alpha Medical Honor Society. He completed his Psychiatry Residency at the University of Texas Southwestern Medical Center and served as Chief Resident during his final year of training. He remained on faculty at UTSWMC for one year as an instructor and served as the Assistant Medical Director of the Inpatient Psychiatric Unit at Parkland Memorial Hospital
Dr. Kelt is certified in Adult Psychiatry by the American Board of Psychiatry and Neurology. He has been in active clinical practice in Dallas for 34 years. He has served as the Medical Director of two Adolescent Psychiatry Units at two local hospitals. He also served as the Psychiatric Consultant for the Texas Baptist Home for Children in Waxahachie, Texas caring for the mental health needs of foster children.
Dr. Kelt practices General Adult Psychiatry. His practice includes the treatment of mood disorders, anxiety disorders, ADHD, obsessive –compulsive disorders, and PTSD.
He has a continuing special interest in the diagnoses and treatment of mood disorders/ADHD in the adolescent population. His focus includes psychopharmacologic and psychotherapeutic measures as well as contemporary treatment modalities to include Repetitive Transcranial Magnetic Stimulation as well as nasal esketamine (Spravato).

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Taylor M. Herzog M.D.

General Adult and Adolescent Psychiatry

Taylor M. Herzog M.D.

Taylor M. Herzog M.D. practices General Adult and Adolescent Psychiatry. His specialties include Anxiety and Panic Disorders, Mood Disorders (Depression and Bipolar Disorders), OCD, PTSD, Psychotic Disorders, and ADHD.

Dr. Herzog received his M.D. from The Texas A&M College of Medicine completing his clinical rotations in Dallas at Baylor University Medical Center. He then completed his residency in Psychiatry at The University of Texas Medical Branch in Galveston, Texas where he received the prestigious Thayer Award for Excellence in Teaching given by the John P. McGovern Academy of Oslerian Medicine. He is Board Eligible for Certification by the American Board of Psychiatry and Neurology in Adult Psychiatry.

Dr. Herzog is an Adjunct Assistant Professor at the Texas A&M College of Medicine -Dallas Campus and provides teaching and lectures to medical students during their psychiatry rotation at the Thorntree Psychiatric Associates offices.

He has a special interest in novel therapeutic modalities for both adult and adolescent illnesses. He continues to research and implement innovative treatments including genetic testing, repetitive Transcranial Magnetic Stimulation and nasal esketamine (Spravato).

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