meet our team

Board-Certified Clinicians

Meet Our Team

Schedule Appointment

Years Of
Experience

10+

Your personal transformation starts here!

Welcome to OASIS Mental Health Services, your premier choice for comprehensive mental health care. We place your psychological wellness at the forefront of our commitment. Our team is an ensemble of seasoned mental health professionals, dedicated to providing evidence-based, personalized care tailored to your unique needs. As a trusted companion in your journey towards improved mental health, we offer a secure and confidential environment, fostering healing, growth, and well-being. Begin your journey with OASIS today, and together, let’s illuminate the path to a healthier, brighter future.

Our Therapy Philosophy

At Oasismhs, our mission is to offer empathetic and knowledgeable support to individuals who are facing challenges related to mental health. We are committed to providing compassionate care that helps our clients improve their well-being and find a path towards a fulfilling life.

Meet the team

Dr Peace Peters

DNP PMHNP-BC,
Clinical Director

Dr Peace Peters, DNP PMHNP-BC | Clinical Director

Dr. Peace Peters is a doctoral-level board-certified family Psychiatric Mental Health Nurse practitioner (PMHNP). Peace specializes across lifespans, treating all ages from children, adolescents, adults, and geriatric mental health and wellness. Dr. Peters serves Maryland and Virginia. She has over 20 years of healthcare experience working in different healthcare settings in inpatient and outpatient in the DMV area.

Her experience includes working in general medicine and surgery, bariatric surgery, telemetry, orthopedics, pediatric medicine, Critical Care Unit, and long-term care. Additionally, over the past 13 years, Peace has been working specifically within her specialty concentration in Psychiatric Mental Health and subspecialty in Substance Addiction treatment.

She treats a wide range of Behavioral mental health and psychiatric conditions, including but not limited to; Mood Disorders, Depression, Anxiety, PTSD, Adjustment disorders, Bipolar disorders, schizophrenia, OCD, and ADHD. Whatever you’re dealing with, I’m here to help. Seeking help can feel scary, but you’re making the right choice. You deserve a safe space to heal and grow. I’ll meet you with compassion and evidence-based treatment modalities so you can overcome the hangups and habits holding you back. Let’s work together!

Careme Yago

MSN, PMHNP-BC

Careme Yago, PMHNP-BC

Careme Yago is a Psychiatric Mental Health Nurse Practitioner (PMHNP) with over 14 years of dedicated experience working in various healthcare settings. This foundation has uniquely enabled her to integrate physical health considerations into psychiatric treatment, ensuring comprehensive care for each individual.

She serves the DMV area, and brings a nuanced perspective that considers both physical and psychological well-being, enhancing treatment outcomes and overall patient satisfaction. Her approach is rooted in compassion and attentiveness, qualities honed through years of working with diverse populations. She is proficient in treating a spectrum of psychiatric conditions including depression, anxiety, ADHD, bipolar disorders, PTSD, schizophrenia, and OCD. Each day, her focus remains steadfast on providing unwavering support to her patients.

I invite you to embark on a journey of holistic mental health care with me. Together, we will navigate challenges and strive towards emotional well-being. Let’s connect and explore how I can support you in your mental health journey.

Heather Figi

MSN, PMHNP-BC

Heather Figi, MSN, PMHNP-BC

Heather Figi, MSN, PMHNP-BC, is a board-certified Psychiatric-Mental Health Nurse Practitioner (PMHNP) dedicated to providing comprehensive, patient-centered mental health care. She specializes in diagnosing and managing mood disorders, anxiety, ADHD, PTSD, and psychotic disorders across the lifespan.

Heather earned her Master of Science in Nursing (MSN) from Frontier Nursing University and her Bachelor of Science in Nursing (BSN) from Oregon Health & Science University. She brings a diverse background in inpatient psychiatry, crisis intervention, and outpatient medication management, with a strong commitment to trauma-informed, whole-person care. She takes a collaborative and individualized approach, working closely with patients to develop care plans that align with their unique needs and goals.

A lifelong learner, Heather stays engaged with the latest advancements in psychiatric care to provide evidence-based, high-quality treatment. She is an active member of the American Psychiatric Nurses Association (APNA), the American Association of Nurse Practitioners (AANP), and the Virginia Council of Nurse Practitioners (VCNP).

Tyler Brooks

MSN, PMHNP-BC

Tyler Brooks, MSN, PMHNP-BC

Tyler Brooks, MSN, PMHNP-BC is a board-certified Psychiatric Mental Health Nurse Practitioner committed to delivering compassionate, patient-centered, and evidence-based psychiatric care. He brings extensive clinical experience working with individuals across the lifespan, including active-duty service members, military veterans, and their families. Tyler specializes in the assessment, diagnosis, and treatment of a wide range of mental health conditions, including mood disorders, anxiety disorders, ADHD, PTSD, and psychotic disorders.

Tyler earned his Bachelor of Science in Nursing from George Mason University and his Master of Science in Nursing from Old Dominion University. He is deeply committed to holistic, collaborative care and works closely with patients to understand their unique experiences, personal values, and treatment goals. By developing individualized and thoughtful treatment plans, Tyler empowers patients to actively participate in their mental wellness journey.

Known for his calm demeanor and supportive presence, Tyler creates a safe, respectful, and welcoming therapeutic environment where patients feel heard, understood, and confident in their care.

Amanda Grizzle

MSN, PMHNP-BC

Amanda Grizzle, PMHNP-BC

Amanda Grizzle, PMHNP-BC, is a Psychiatric Mental Health Nurse Practitioner who brings years of prior psychiatric experience as a nurse to her practice. She has cared for individuals across the lifespan, from toddlers, to geriatric patients, and has developed a strong foundation in treating a wide variety of mental health needs.

Her specialty experience includes working with:

  • Postpartum mothers navigating the challenges of motherhood.
  • Individuals struggling with substance abuse disorders.
  • Children and adolescents with Autism Spectrum Disorder, various conduct disorders, and ADHD.
  • Patients living with schizophrenia, PTSD, anxiety, depression, and personality disorders.
  • Individuals who have been incarcerated or who have served in the military or worked in law enforcement.

Amanda is deeply passionate about providing non-judgmental, evidence-based care and brings compassion and expertise to every patient encounter. She believes in meeting people where they are on their journey, offering support tailored to each individual’s needs and circumstances.


Olubola Adesuyi

MSN, PMHNP-BC

Olubola Adesuyi, PMHNP-BC

Olubola Adesuyi (Ola) is a board-certified Psychiatric Mental Health Nurse Practitioner who specializes in the diagnosis and management of various mental health disorders. She earned her Master’s in Psychiatric and Mental Health Nursing from Wilkes University. Her goal is to provide effective, compassionate, evidence-based mental health treatment to individuals with mental health issues, substance use disorder, and comorbidities across the lifespan. Her nursing philosophy of care is caring, holistic, and culturally sensitive; she believes in respecting human dignity and supporting individuals to be their best selves.

Her experience and skills in mental health treatment have helped support children, teens, and adults who are struggling with depression, ADHD, anxiety, PTSD, and mood disorders to improve their quality of life, wellness, and dignity. She views her patients as the most important members of the treatment team and strongly values their views and insight.

Bridget Ngozi Olulana

MSN, PMHNP-BC

Bridget Ngozi Olulana, MSN, PMHNP-BC

Bridget Ngozi Olulana is a licensed and a board certified registered psychiatric nurse practitioner. Bridget is passionate about providing quality care to clients, that is guided by respect, compassion, and self-acceptance.

Her goal is to provide individualized mental health treatment plan in a collaborative, supportive, and non-judgmental manner; utilizing evidence-based approaches that promote resilience and well-being.

Bridget is particularly enthusiastic about helping individuals navigate complex mental health challenges such as PTSD/Trauma, grief, sleep disorder/insomnia, postpartum depression/anxiety, bipolar disorder, OCD, anxiety, and depression amongst others. She is experienced in providing a combination of medication management and individual therapy to support her clients. She understands the intricacies of midlife transitions and the specific mental health needs that can arise during these times, and she is dedicated to helping her clients find balance and stability.

She earned her Associate of Arts (Nursing) at Howard Community College, BSN at Stevenson University, and MSN at Frostburg State University, Maryland. She is licensed in Maryland (MD) and Virginia (VA). Bridget has several years of experience working in the psychiatry and behavioral health unit of Johns Hopkins Medicine and University of Maryland.

Olatomi Akinola

MSN, PMHNP-BC

Olatomi Akinola, MSN, PMHNP-BC

Olatomi Akinola is a compassionate and dedicated Psychiatric Mental Health Nurse Practitioner with an eye for innovative approaches to improve solutions to mental health challenges. Over a decade of experience as a registered nurse and also a Psychiatric Nurse Practitioner. Skilled in offering well-developed mental health assessments, diagnosis, treatment, counseling and relationship building for patients of all ages and backgrounds. Certified by the American Nurses Credentialing Center (ANCC) and licensed to practice in Virginia.

Dr Teri Bilhartz

DO, MPH

Teri Bilhartz, DO, MPH

Dr. Bilhartz is a board-certified specialist in Preventive Medicine and Public Health, holding a Master of Public Health degree from Columbia University. With over 17 years of clinical experience, she has dedicated her career to primary care, psychiatric care, and women’s health. Dr. Bilhartz is licensed to practice in Virginia, California, New York, and Florida.

Outside of her professional life, Dr. Bilhartz enjoys spending quality time with her husband and three children. She is an avid jogger, hiker, and soccer coach, always finding ways to stay active and engaged with her community.

Jeline Juntura

Practice Office Manager

Jeline Juntura, Practice Office Manager

Jeline is the Practice office manager at Oasis mental Health Services. Her academic journey began with a Bachelor of Science in Psychology, a field that ignited her passion for understanding human behavior and helping others. She is a dynamic, passionate, and dedicated professional who has made a significant impact in patient care service, talent acquisition, and healthcare services. At OasisMHS, as the Practice Office Manager, Jeline’s dedication to excellence has been pivotal in ensuring efficient and compassionate service delivery at the practice. Her journey is a testament to her commitment to her field and her passion for helping others. Jeline continues to strive for excellence, embodying the values of continuous learning and compassionate service. She approaches her administrative responsibility with dedication and professionalism.

Rhon Aguila

Customer Service Representative

Rhon Aguila, Customer Service Representative

Rhon Aguila is a dedicated administrative assistant of Oasis Mental Health Services. His academic journey began with a Bachelor of Science in Psychology, where he learned how bring a thoughtful, people-centered approach to every task. With strong organizational skills and a keen understanding of human behavior. As the Administrative assistant, Rhon oversees managing schedules, streamlining communication, and supporting team dynamics in fast-paced environments. Known for being dependable, empathetic, and detail-oriented, Rhon combines administrative expertise with psychological insight to help create efficient and supportive workplaces.

Samantha “Sam” Jacalan

Clinical Administrator

Samantha “Sam” Jacalan Clinical Administrator

Samantha “Sam” Jacalan is a compassionate and dedicated member of the Oasis Mental Health Services team, serving as a key point of support for our patients and staff. With experience spanning both clinical exposure and administrative operations, Sam brings empathy, organization, and reliability to every interaction.

Her background in healthcare administration includes human resources support, scheduling coordination, social media management, and project organization—allowing her to efficiently manage multiple priorities while ensuring patients feel heard, respected, and supported. Sam’s clinical exposure further strengthens her patient-centered approach, helping her respond with understanding and care.

With over eight years of experience in competitive journalism, Sam offers exceptional written and verbal communication skills, ensuring clear, timely, and professional assistance for our patients. She thrives in collaborative environments grounded in teamwork, integrity, and service excellence.

She is committed to continuous growth, Sam is proud to provide high-quality administrative support with professionalism, compassion, and heart—helping make every patient’s experience at Oasis as seamless and welcoming as possible.

Word From Our Clients Idman D.
Word From Our Clients Annaleah C.
Word From Our Clients Christian J.

Get an Evaluation Appointment Today

Schedule Appointment

Frequently Ask Questions

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Step 1: To get started with the process, you can either call us or fill out our online form today.

Step 2: Our team will match you with a provider who can cater to your individualized needs.

Step 3: We will arrange your initial appointment at a time and place that suits your convenience.

At Oasis, We offer the option of telepsychiatry evaluations for both your initial consultation and any subsequent follow-up visits.

Oasis Mental Health offers comprehensive care for a range of psychiatric conditions, including:

  • Attention Deficit Hyperactivity Disorder (ADHD)
  • Anxiety Disorders
  • Depressive Disorders
  • Bipolar & Mood Disorders
  • Obsessive-Compulsive Disorders
  • Post Traumatic Stress Disorder
  • Insomnia / Sleep Disorders
  • Schizophrenia Spectrum Disorders & Schizoaffective Disorder

Initiate your journey towards improved mental wellness by arranging an appointment at a time that suits you. kindly click on this link to go to our schedule appointment page . This initial step sets the course towards healing, and we eagerly anticipate accompanying you on this transformative journey.

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  • Cigna/Evernorth
  • Humana
  • Medicaid
  • Medicare
  • Magellan
  • Multiplan
  • Optima Health
  • Tricare
  • UHC/Optum
  • Virginia Health Premier Health Plan
  • Kaiser Permanente of VA

Privacy Policy

Last updated: 6/18/2023

Introduction

Welcome to Oasis Mental Health services (“we”, “us”, “our”). Your privacy is crucial to us, and we are dedicated to safeguarding your personal data. This privacy policy provides details about how we handle the personal data you share with us when you visit our website.

Who We Are

Oasis Mental Health services, is the controller and responsible for your personal data. If you have any questions about this privacy policy, including any requests to exercise your legal rights, please reach us through the following contact details: Email address: info@oasismhs.com, Postal Address: Chantilly, VA 20152

The Data We Collect About You

We may collect, use, store, and transfer various types of personal data about you, including but not limited to:

  1. Identity Data.
  2. Contact Data.
  3. Health Data.
  4. Technical Data related to your visit to our website.

Please note that we collect this data directly from you and through automated technologies on our website.

Taking the First Step Towards Recovery

Starting your mental health journey can be daunting. At Oasis, we simplify this process to help you take that crucial step. By contacting us or filling out our online form, you can initiate a personalized evaluation. Our dedicated team will match you with a provider to ensure that you receive the best possible care suited to your needs.