Skip to main content

Gloria Odum, MD

Staff Psychiatrist
Languages
English
SPECIALTIES
Anxiety
Bipolar Disorder
Depression
LGBTQIA+
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Perinatal Psychiatry
Phobias
Postpartum Depression
Tics/Tourette Syndrome
Geriatric

Education and training

  • Johns Hopkins University, BA
  • University of Texas School of Medicine at Houston, MD
  • MedStar Washington Hospital Center, Internship
  • Dell Medical School, University of Texas at Austin, Residency

Get to know

Gloria Odum, MD

Dr. Gloria Odum is a board-certified psychiatrist who treats adult patients. She completed her undergraduate studies at Johns Hopkins University, Baltimore, MD, where she received her Bachelor's degree with Honors in Public Health, then completed her medical degree at The University of Texas at Houston. She completed her residency in psychiatry at the University of Texas Dell Medical School in Austin, where she served as chief resident. Dr. Odum has worked in several clinical, leadership and administrative positions and has been actively involved in teaching and community outreach. She previously worked at The Menninger Clinic, which specializes in psychotherapeutic treatments. Dr. Odum has expertise in treating a wide variety of mental health disorders including depression, anxiety, PTSD, trauma disorders, bipolar disorder, schizophrenia, ADHD, OCD, and addiction. Dr. Odum strongly believes in treating the person and not the diagnosis. Dr. Odum's approach is holistic, collaborative, supportive, and patient-centered. Dr. Odum has been in practice since 2011.

Get matched with a clinician like this one

Ready to book your first appointment? Take our 10-minute assessment. We’ll match you with a clinician who meets your needs, has availability, and takes your insurance.

Get started
More Clinicians

Stephen Byrd, MD

Staff Psychiatrist

Dr. Stephen Byrd is a clinical psychiatrist at Talkiatry. He is board-certified in both psychiatry and addiction medicine. He has been practicing for over 31 years in a wide variety of settings, including working with inpatients and outpatients in private practice, community mental health, geriatric, VA, and community hospital/medical center settings. Dr. Byrd's practice focuses on evidence-based medication management, usually provided in conjunction with 30-minute supportive psychotherapy, which is informed by cognitive behavior therapy, psychodynamic psychotherapy, and motivational enhancement. When more intensive therapy is needed, Dr Byrd may ask you to include a therapist as part of your care team. He received his medical degree from the University of Cincinnati College of Medicine in Ohio and completed his residency training in psychiatry at Case Western Reserve University School of Medicine, University Hospitals of Cleveland. Throughout his career, he has treated patients with a wide variety of conditions in both inpatient and outpatient settings. Additionally, He has served as director of inpatient geropsychiatry at Lutheran Hospital in Cleveland, Ohio, program manager of the substance abuse treatment program at the Charlie Norwood Veterans Affairs Medical Center in Augusta, Georgia, and medical director of outpatient behavioral health at Saint Alphonsus Regional Medical Center in Boise, Idaho. Throughout his career, Dr. Byrd has been active in training medical students and psychiatry residents, and he has held clinical teaching appointments at Case Western Reserve University School of Medicine, Northeastern Ohio Universities College of Medicine, Medical College of Georgia, University of Washington School of Medicine, Idaho College of Osteopathic Medicine and Pacific Northwest University of Health Sciences College of Osteopathic Medicine.�.�

Rebecca Kostopoulos, PMHNP

Director, Psychiatric Nurse Practitioners

Rebecca Kostopoulos, PMHNP, is a board-certified psychiatric nurse practitioner committed to helping individuals facing mental health challenges lead full and balanced lives.

Her practice primarily focuses on medication management, often combined with supportive or emotionally focused therapy during 30-minute follow-up visits. When appropriate, Rebecca may recommend involving an additional therapist to ensure the most effective and comprehensive care.

She earned her Master of Science in Nursing with a specialization in psychiatry from Columbia University and her Bachelor of Science in Nursing from Boston College. Her training includes psychiatric diagnosis, medication management, and both psychodynamic and cognitive-behavioral therapies.

With over a decade of experience, Rebecca has evaluated and treated adults in a variety of clinical settings. Her previous roles include working at Elmhurst Hospital’s Comprehensive Psychiatric Emergency Program, Gracie Square Hospital’s inpatient unit, as well as in community health centers and skilled nursing facilities.

As a nurse practitioner, Rebecca believes that mental health is just as vital as physical health. She values the therapeutic relationship and approaches treatment with empathy and collaboration, ensuring that each patient receives personalized and compassionate care.

Roy Johnston, MD

Staff Psychiatrist

Dr. R. Neil Johnston grew up in a rural Appalachian county in Virginia and was the first physician in a family of teachers. Fascinated by both science and the arts, he attended William and Mary, where his interests flourished. A college hospital job inspired him to pursue medicine, and part-time work at a children’s psychiatric facility during medical school confirmed his passion for psychiatry. He has since treated diverse populations in inpatient, outpatient, and intensive programs, with special focus on addictions, anxiety, and mood disorders. Helping patients find joy and improved functioning is his calling.

Dr. Johnston’s highest goal is to help patients feel and function better, aiming for relief and ideally full remission. He carefully manages medications, particularly controlled substances, using monitoring and safety protocols to protect patient health. He prioritizes ethical standards, patient confidentiality, and tailored care, incorporating both medication and lifestyle strategies such as nutrition and physical activity. His approach emphasizes understanding each patient as a person, not just a diagnosis. This will include routine clinical checks and frequent follow-up visits meant to protect patient health and welfare.

He begins with a comprehensive psychiatric evaluation, including review of medical and psychiatric history, recent labs, and relevant records. Communication with other providers and, when appropriate, family members ensures coordinated care. Administrative needs, such as insurance, leave, or social security forms, are addressed during visits. His approach combines thorough assessment, collaboration, and careful follow-up to optimize mental and overall health.

Mahreen Rashid, PMHNP

Staff Nurse Practitioner

Mahreen Rashid, PMHNP, has over ten years of experience treating patients with a variety of psychiatric diagnoses across inpatient, intensive outpatient, and outpatient settings. While she has cared for children, adolescents, and adults, her primary focus and passion is supporting adults with their mental health needs. She earned her medical degree and completed her training with a commitment to compassionate, evidence-based care.

Mahreen takes a collaborative approach, working closely with each patient to understand their emotional needs and medication preferences. She values a team-based approach, integrating input from patients and other care providers to create a holistic treatment plan that supports overall well-being.

During initial evaluations, Mahreen gathers a thorough history, including medical background, mental health concerns, and personal goals. She reviews past medication trials, discusses previous experiences with providers, and assesses each patient’s comfort level with new treatments. Together, she and her patients develop individualized plans to support long-term mental health and wellness.

Elena Perea, MD

Staff Psychiatrist

Dr. Elena Perea is a board-certified psychiatrist.  She completed her undergraduate training at Wake Forest University followed by medical school and residency training at The University of North Carolina at Chapel Hill (UNC).

Dr. Perea holds an adjunct academic appointment at UNC and has been involved in medical education for her entire career.  She most recently served as Residency Program Director for the Mountain Area Health Education Center (MAHEC) psychiatry residency in Asheville, NC.  She remains involved in didactic education there for both residents and medical students.

She has a genuine interest in treating a vast array of psychiatric disorders including depression, anxiety, bipolar disorders, post-traumatic stress disorders and obsessive compulsive and related disorders. She is a skilled psychopharmacologist and interested in the mind-body connection. She believes physical health greatly affects mental health and vice versa and loves helping patients with medical comorbidities to feel well.

Patients looking for a psychiatrist will find that Dr. Perea has a comprehensive approach to diagnosis and management of her patients. She believes in the principle that body and mind are interconnected and utilizes psychoeducation and psychotherapeutic approaches in addition to medications for total wellness.

Hector Cardiel-Sam, MD

Staff Psychiatrist

Dr Cardiel- Sam is Board Certified in both General Psychiatry and Child and Adolescent Psychiatry. He completed undergraduate training at University of Miami followed by medical school at St. Georges University. He has completed Residency in Psychiatry at Bergen New Bridge Medical Center and fellowship training for Child and Adolescent Psychiatry at Penn State University.  

His training in Child and Adolescent Psychiatry has given him a unique perspective on mental illness. He has found that these conditions rarely start in adulthood, but rather, are a product of multiple factors and years of lived experience. For this reason, Dr Cardiel- Sam approaches his patients through a trauma informed lens; an acknowledgement of the unique story and challenges that each individual has faced. He is comfortable treating a wide variety of psychiatric conditions including depression, anxiety, bipolar disorder, ADHD and many more.

Working with Dr Cardiel- Sam, you can expect holistic and collaborative psychiatric treatment. He believes that medication along with therapeutic treatment should fit seamlessly into a patient’s life, with minimal inconvenience. He strives to empower patients in shared medical decision making, making time to explain risks/benefits and alternatives for treatment.

Ready to get matched?

Start our short assessment
Specialties
Anxiety
Bipolar Disorder
Depression
LGBTQIA+
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Perinatal Psychiatry
Phobias
Postpartum Depression
Tics/Tourette Syndrome
Geriatric
States
Texas
Languages
English
Takes insurance
Virtual visits
7 years experience