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Margaret Ngumi, PMHNP

Staff Nurse Practitioner
Languages
English
SPECIALTIES
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Medication Management

Education and training

  • Valdosta State University Psyc. Mental Health Nurse Practitioner

Get to know

Margaret Ngumi, PMHNP

Margaret Ngumi, MSN, APRN, FNP-C, PMHNP-BC, is a dual board-certified Psychiatric Mental Health and Family Nurse Practitioner with over 20 years of experience in healthcare. She began her career as a Family Nurse Practitioner and later pursued a post-master’s certification in psychiatry to address the growing need for accessible mental health services. Margaret has extensive experience in both inpatient and outpatient settings, treating conditions such as depression, anxiety, PTSD, mood disorders, and substance use disorders.

She takes a collaborative, patient-centered approach to care, creating a safe and supportive environment where individuals feel heard and empowered. With a strong emphasis on holistic care, Margaret considers all aspects of a patient’s well-being—including lifestyle, relationships, and overall health. Whether through medication management, therapy, or lifestyle modifications, she is committed to helping patients achieve meaningful and lasting improvements in their mental health.

Margaret begins with a comprehensive psychiatric evaluation to understand each patient’s history, concerns, and goals. She then works closely with them to develop a personalized care plan that may include medication, therapy, and evidence-based lifestyle interventions. She prioritizes open communication, patient education, and ongoing collaboration to ensure treatment remains effective and evolves with each patient’s needs. Through her compassionate and evidence-based approach, Margaret is dedicated to helping individuals find balance and improve their overall quality of life.

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Background and credentials

Dr. Matthew Koller is a board-certified adult psychiatrist who completed his undergraduate training at The University of Texas at Austin. He earned his medical degree from The University of Texas Health Science Center at San Antonio and completed his general adult psychiatry residency at Baylor College of Medicine in Houston, TX, where he served as Chief Resident of Education in his final year of training.

Treatment approach

Dr. Koller believes that understanding a patient fully is essential before treatment begins, emphasizing a collaborative and patient-centered approach to care. His practice is primarily focused on medication management, but he also incorporates supportive therapy and other therapeutic modalities as needed. He may recommend including a therapist in the treatment plan to ensure comprehensive, well-rounded care. He has experience treating a wide range of mental health conditions, including depression, anxiety, insomnia, personality disorders, bipolar disorder, PTSD, and psychotic disorders.

What you can expect in a first visit

During the first visit, patients can expect a thorough and individualized psychiatric evaluation, where Dr. Koller takes the time to understand their symptoms, history, and treatment goals. He prioritizes open communication and shared decision-making, working closely with patients to develop personalized treatment plans. While medication management is the foundation of his approach, he remains flexible and adaptive, incorporating therapy and other interventions as needed to help patients achieve optimal mental health.

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.

Abdulhafiz Ahmed, MD

Staff Psychiatrist

Abdulhafiz Ahmed, MD

Staff Psychiatrist

Languages

English, Arabic

Conditions treated:

Anxiety, Depression. Bipolar Disorder, OCD, PTSD/Trauma, ADHD

Education and training:

University of Maryland at College Park, BS

Georgetown School of Medicine, MD

University of Maryland Medical System at Baltimore (UMMS), Residency

and fellowship.

Dr. Abdulhafiz Ahmed is a board-certified adult psychiatrist with over 25 years of clinical experience across community hospitals, university teaching hospitals, the Veterans Administration (VA) medical system, and private practice. He has served as the inpatient medical director at MedStar Harbor Hospital in Baltimore and outpatient medical director at the University of Maryland Upper Chesapeake. Dr. Ahmed has extensive expertise diagnosing and treating a wide range of psychiatric conditions including depression, anxiety, bipolar disorder, adjustment disorders, phobias, thought disorders, trauma, and PTSD.

Dr. Ahmed approaches each patient with empathy, attentiveness, and respect, fostering an environment of safety and trust. He recognizes the importance of cultural diversity and is dedicated to understanding each person’s unique background, values, and life circumstances. His patient-centered philosophy ensures that individuals feel heard, validated, and actively involved in their care.

Dr. Ahmed combines evidence-based psychopharmacology with supportive psychotherapy to provide comprehensive and individualized treatment. He collaborates closely with patients to develop a plan that targets their specific symptoms and goals, focusing on improving functioning, resilience, and overall well-being. His approachable and compassionate demeanor helps patients feel comfortable and confident throughout their journey toward recovery.

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Consuelo Reddick, MD, completed her medical degree and adult psychiatry residency at the University of Alabama at Birmingham, followed by fellowship training in child and adolescent psychiatry at Harvard Medical School’s Cambridge Hospital. She is double board-certified in general psychiatry and child and adolescent psychiatry. Her career has included roles in inpatient and outpatient care, academic settings, consulting, and telepsychiatry across multiple states.

Dr. Reddick works collaboratively with patients, ensuring they feel heard, respected, and informed. She emphasizes psychoeducation to empower patients in their treatment journey and encourages open communication to build trust and partnership. She treats a range of conditions, including anxiety, depression, and ADHD, in both children and adults.

An initial assessment with Dr. Reddick includes a thorough review of personal and medical history, identification of concerns, and the development of treatment goals. She often integrates supportive therapy with medication management to provide individualized, effective care that promotes both symptom relief and long-term well-being.

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Her care process is guided by each patient’s goals, integrating evidence-based practices to ensure personalized and effective support that aligns with their unique needs and aspirations.

Alanna Montalvan, PMHNP

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Alanna prioritizes creating a warm, non-judgmental space where patients feel heard, respected, and supported. She takes a collaborative approach, partnering with patients to identify goals, explore treatment options, and build long-term wellness strategies. Open communication, transparency, and a holistic perspective that integrates emotional and physical health guide her practice. Patients can expect thoughtful, evidence-based care that considers life stressors, identity, family dynamics, and wellness behaviors.

Alanna begins with a comprehensive assessment to understand each patient’s history, concerns, strengths, and goals. She develops individualized treatment plans, including medication management, psychotherapy-informed strategies, lifestyle recommendations, and coordination with other providers as needed. Treatment goals are regularly revisited to ensure care evolves with the patient. She emphasizes empowerment and education, helping patients feel confident and informed throughout their mental health journey.

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Specialties
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Medication Management
States
Washington
Arizona
Oregon
Languages
English
Takes insurance
Virtual visits
years experience