Matthew Hamilton, 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. In addition, Dr. Grantham does not treat ADHD nor prescribe stimulant medications.

Dr. Farias is a board-certified physician in both adult and child & adolescent psychiatry, with a focus on the diagnosis and treatment of depressive disorders, anxiety disorders, trauma- and stressor-related disorders, and ADHD. Dr. Farias graduated magna cum laude with a Bachelor of Science degree from the University of Houston, majoring in Biology with a minor in Chemistry. She then pursued her medical education at Texas Tech University Health Sciences Center, earning her Doctor of Medicine degree. Dr. Farias completed a three-year psychiatric residency at TTUHSC, followed by fellowship training in child and adolescent psychiatry. She completed her first year of fellowship at the University of Texas Medical Branch in Galveston and her second year at TTUHSC. With a diverse clinical background, Dr. Farias has gained experience in a variety of settings, including academic psychiatry, consult liaison psychiatry, intensive outpatient programs (IOP), partial hospitalization programs (PHP), emergency psychiatry, and outpatient psychiatry. This broad range of experience allows her to provide comprehensive, individualized care to patients at all stages of life. Dr. Farias takes a holistic approach to treatment, incorporating both medication management and psychotherapy. She utilizes principles from Cognitive Behavioral Therapy (CBT), Acceptance and Commitment Therapy (ACT), and supportive psychotherapy, recognizing that a combined approach leads to better outcomes for patients.

Cassandra Lozano, LPC, LCDC is located in Texas. She graduated with her bachelor's degree in psychology from the University of Texas-Brownsville. Following obtaining her master's degree in counseling and guidance from the University of Texas Rio Grande Valley. She has 10 years of experience in the addictions field and 7 years in mental health, working with her local mental health authority for the past 8 years. She has dedicated her career to specializing in addictive disorders, ADHD, individuals struggling with mood disorders such as depression, anxiety, self-esteem issues, and life transitions. Cassandra works with both adults and adolescents and is a strong ally of the LGBTQ community and Latinx communities. Her therapeutic approach is eclectic in nature, and client-centered. She collaborates with her clients, meeting them where they are and helping them find personalized solutions to achieve their goals and become their best selves. She utilizes a combination of Motivational Interview approaches, CBT, Solution-Focused counseling, and DBT. She ensures that clients are fully aware of their treatment goals and will work collaboratively to facilitate meeting their needs, finding meaning in life, and finding solutions to their current issues. In her personal life, Cassandra is the proud mother of two boys and enjoys tending to their Kuk Sool Won (martial arts) events. She loves relaxing on the beach and is very family oriented. She enjoys fishing, hunting, and off-roading in her jeep.

Dr. De Paz received his medical degree from the University of Texas Medical Branch in Galveston, TX, and has been practicing for 9 years. He completed his psychiatric residency and child and adolescent psychiatry fellowship training at the University of Texas Medical Branch. After completing training, he worked at the Center for Health Care Services in San Antonio, TX. He worked with special needs children and adults who required the highest level of care both behaviorally and medically. He then continued his treatment of children and young adults at CommuniCare Health Center also in San Antonio. He served as Director of Behavioral Health for CommuniCare for 4 years. Dr. De Paz completed his undergraduate studies in Psychology and Biology at the University of Houston in Houston, TX. While having treated a wide variety of patients, his primary clinical focus has been the treatment of ADHD in children and adults, and working with special needs children and adults who may have Autism Spectrum Disorder or other Intellectual or Developmental Disabilities. Dr. De Paz's practice focuses on medication management. He offers medication management evaluations and follow-up visits. If the need arises, he works with licensed therapists to provide behavioral support.

Dr. Iris Guerrero Urena is double board-certified in psychiatry and consultation-liaison psychiatry. She received her medical degree from Universidad Iberoamericana in the Dominican Republic and went on to complete psychiatric residency at Lincoln Hospital in New York City. Dr. Guerrero then completed a consultation liaison fellowship at Morningside and West Mount Sinai Hospital in New York, further acquiring proficiency in caring for patients with complex medical and psychiatric comorbidities. After completing training, Dr. Guerrero worked in an acute inpatient unit and as a psychiatric consultant for patients admitted to medical units in Oregon. Dr. Guerrero Urena focuses on medication management while also implementing elements of supportive, dialectical behavioral, and cognitive behavioral therapy within each session to fully address individual needs. At times, Dr. Guerrero Urena may recommend a therapist for additional therapy. Dr. Guerrero Urena is experienced in treating a wide range of psychiatric conditions including depression, bipolar disorder, anxiety, PTSD, OCD.

Ms. Ellen Ortiz is fully licensed as a Marriage and Family Therapist in multiple states. She has decades of life experience to support her 3 years of full licensure. Ms. Ortiz sees individuals from the perspective of the various environments they interact in and how it impacts them. Ms. Ortiz is enthusiastic about collaborating with clients under the care of one of our psychiatric experts in order to allow for a more complete and personalized approach for each individual's needs.
Ms. Ortiz began her education later in life at Elgin Community College then continued to acquire her bachelor’s degree from Argosy University with honors. Ms. Ortiz forged ahead and completed her Master’s in Family Counseling at the CACREP accredited graduate school, Northeastern Illinois University. Her training included the externship for Emotion Focused Therapy with Dr. Sue Johnson.

Ms. Ortiz incorporates therapy from a Solution Focused perspective including Cognitive Behavioral Therapy, Mindfulness and Attachment theory.  Ms.Ortiz has been trained in Crisis Intervention and Trauma Informed therapy. Her life experience and clientele have spanned all life cycles, races, and medical needs as well as honoring all varieties of human beings. She has also supported clients through medical diagnosis and end of life as well as grief.

Ms. Ortiz brings enthusiasm for each client based on the belief that each person has unique purpose, strengths and abilities on which to draw on. The client's abilities paired with tools and support acquired in therapy will lead each of her clients to a life they choose to enhance.