Doctors

Holly DuBois, M.D.

Dr. DuBois graduated from Stanford University with a degree in Human Biology. She completed her medical school at the Keck School of Medicine at University of Southern California with Dean’s Recognition, and post-graduate training back at Stanford in the Department of Psychiatry and Behavioral Health Sciences. She attained specialized training in consultative psychiatry while at Stanford, and continues to extend her expertise in this arena via telemedicine. After witnessing the triumphs and challenges of telemedicine, she founded Avail Telemedicine in 2016 with the goal of enhancing the delivery and quality of telepsychiatry services. She has partnered with esteemed colleagues in her field to remove barriers of access to excellent mental health care.

Carla Bejjani, M.D.

Dr. Bejjani is board certified in both general adult psychiatry and Geriatric psychiatry. She has a license to practice medicine in Texas. She treats adults with mood, anxiety, and psychotic illnesses as well as with neuro-cognitive disorders. Dr. Bejjani received her medical degree from the University of Saint Joseph, faculty of medicine and completed her psychiatry residency at Baylor College of Medicine. She pursued a fellowship in geriatric psychiatry at Case Western Reserve University/University Hospitals and returned to Baylor College of medicine as an Assistant Professor where she has been practicing at the Harris Health system. Dr Bejjani has also been involved in teaching and supervising medical students and psychiatry residents.

John Byun, M.D.

Dr. Byun graduated from the Boston University School of Medicine in 2019. For his residency, Dr. Byun spent time at both Thomas Jefferson University Hospital in Philadelphia and University of Texas Austin Dell Medical School before graduating in June 2022. Dr. Byun has a strong interest in depression and psychosis, as well as early childhood development. While not assisting patients, he enjoys basketball, hiking, and reading about theology.

Lindsay French-Rosas, M.D.

Dr. French is a board certified adult psychiatrist with licenses to practice medicine in Arizona and Texas. She treats adults with mood, anxiety, and psychotic illnesses, and has a special interest in the interface between trauma and psychiatric health. Dr. French received her undergraduate and medical degrees from the University of Arizona. She completed her psychiatry residency at Baylor College of Medicine in Texas where she practiced adult psychiatry in a community mental health setting and provided medical student and residency education as Associate Professor and Associate Program Director.

Alba Lara, M.D.

Dr. Alba Lara is an adult psychiatrist licensed to practice medicine in New York and Texas. She grew up in West Texas and earned her Doctor of Medicine (M.D.) from Texas A&M University College of Medicine. She completed general psychiatry residency at The University of Texas at Austin Dell Medical School, where she served as chief resident and was awarded both the American Psychiatric Association SAMHSA Minority Fellowship and the American Psychoanalytic Association Fellowship. She has experience working with severe mental illness in the state hospital system and in substance detoxification and rehabilitation facilities. Currently, Dr. Lara is in subspecialty fellowship training in Consultation-Liaison Psychiatry at Columbia University Irving Medical Center. Dr. Lara has clinical interests in psychosomatic (mind-body) medicine, integrated care models, immigrant mental health, neuromodulation (ECT and TMS), medical education, and psychotherapy for personality disorders and trauma.

Marguerite Patel, M.D.

Dr. Patel is a general psychiatrist and holds an MD from the Northwestern University Feinberg School of Medicine, where she graduated as part of the Honors Program in Medical Education (HPME), and was awarded the Chairman’s Award in Psychiatry. She has worked in a multitude of crisis settings, including the Ben Taub Hospital, Michael E. DeBakey VA Medical Center, and Methodist Hospital emergency centers.

Diem-Huong Pham, M.D.

Dr. Pham is originally from Baton Rouge, Louisiana and completed both her medical school education and general psychiatry residency at Louisiana State University. She is currently finishing her fellowship in child and adolescent psychiatry at UT Austin Dell Medical School. She is interested in autism spectrum disorder, neurodevelopmental disorders, and working with underserved communities. In her free time, Dr. Pham enjoys hiking, traveling, karaoke, K-dramas and spending time with family.

Henry Polk, M.D.

Dr. Polk graduated from Texas Tech University Health Sciences Center School of Medicine in Lubbock, Texas in 2000. He then went on to complete his Psychiatry residency and eventual Child and Adolescent Psychiatry University of Texas Health Science Center San Antonio Long School of Medicine. A 2016 Patients’ Choice Award winner, Dr. Polk is passionate about expanding access to psychiatric care for adolescents.

Victor Stiebel, M.D.

Dr. Stiebel received his Doctor of Medicine from the Chicago Medical School.  He completed a combined Internal Medicine/Psychiatry residency at Chicago Medical School and the University of Minnesota with a Fellowship in Psychosomatic Medicine.  On faculty of the University of Pittsburgh Medical School, he splits his time between Emergency Medicine and Emergency Psychiatry.  An early devotee of tele-Psychiatry, he spends a significant part of his time “on-line”.  He retired from the US Navy with 37 years of service.  Victor Stiebel is board certified in Psychiatry, Forensic Psychiatry, Psychosomatic Medicine and Emergency Medicine.

Eva Studer, M.D.

Dr. Studer received her Bachelor of Arts in Philosophy at Baylor University, her MD at The University of Texas Southwestern Medical School, and her Psychiatry residency at the University of Texas Dell Medical School in Austin, Texas. Upon finishing her residency, Dr. Studer joined the University of California San Francisco Health Equity Action Leadership (HEAL) Initiative as a Global Mental Health Fellow. Through this fellowship, Dr. Studer spent six months in Chiapas, Mexico, working as a psychiatric consultant and one year in Chinle, Arizona, providing psychiatric care for the Navajo Nation. Dr. Studer continues to provide monthly supervision to PCPs in Chiapas while also devoting time to Avail Telemedicine, the Physicians for Human Rights Asylum Network, and the University of North Texas Health Science Center as a student of their Master’s in Public Health Leadership online degree program.

Katherine Tharp, M.D.

Dr. Tharp is a board-certified psychiatrist licensed to practice medicine in Texas and South Carolina. She completed both medical school and residency at Texas A&M University, and she is now Medical Director at a large United States Air Force outpatient mental health clinic in Las Vegas. Dr. Tharp is passionate about using telemedicine to ensure high-quality psychiatric care for disadvantaged populations. She is particularly interested in veteran trauma, and, with her husband, founded the non-profit Project Healing Heroes to serve this population. Dr. Tharp remains active in her medical education by teaching psychiatry to Family Medicine residents.

Scott Tlanda, M.D.

Dr. Tlanda graduated Medical School at the University of Texas at Galveston before moving to Baton Rouge for his General Psychiatry residency at OLOL-LSU. He then moved back to Texas for a fellowship in Child and Adolescent Psychiatry at UT Dell Austin. His professional interests include psychosis, mania, and organic psychopathology.

Andrew Wong, M.D.

Dr. Wong graduated from Wayne State University School of Medicine in Detroit, Michigan. Staying in motor city, he then went on to complete general psychiatry residency at Henry Ford Hospital. He is currently finishing his fellowship in child and adolescent psychiatry at UT Austin Dell Medical School. His professional interests include crisis intervention and technology integrated into health care.