
Millie Otsieno
she/herPsychiatric Mental Health Nurse Practitioner (PMHNP)
Self pay costs
Out-of-pocket session costs for clients who don’t have insurance or aren’t covered by their insurance for mental health services.
I’m Dr. Millie Otsieno, a Doctor of Nursing Practice and board-certified Psychiatric Mental Health Nurse Practitioner (DNP, PMHNP-BC) with over 20 years of healthcare experience across three continents. My clinical experience includes working at McLean Hospital and Boston Medical Center, caring for diverse populations. I work with adolescents and adults experiencing anxiety, depression, ADHD, trauma, PTSD, mood disorders, stress, and other challenges. My goal is to create a safe, nonjudgmental space through comprehensive psychiatric evaluations, personalized treatment planning, and medication management.
My approach is compassionate, collaborative, and evidence-based. I take time to listen and work with you to develop a personalized treatment plan that aligns with your needs. I specialize in supporting adolescents and adults experiencing anxiety, depression, ADHD, trauma, PTSD, and mood disorders through psychiatric evaluations and medication management.
You deserve to feel heard, understood, and supported—not just in your struggles, but in your journey toward becoming the healthiest version of yourself. You may be feeling overwhelmed, stuck, or unsure where to begin, but you don’t have to figure everything out alone. When you’re ready, I invite you to take that first step and schedule an appointment.

"Having cared for people across three continents, I’ve learned that every person carries a story beyond what we see, and I’m here to listen without judgment, meet you with compassion, and help you rediscover hope, healing, and the strength within you."
Why did you decide to become a counselor or psychiatric provider?
My decision to become a psychiatric mental health provider grew from a deep desire to help people feel seen, heard, and understood, especially during some of the most challenging moments of their lives. Having spent over 20 years in healthcare across three continents, I have witnessed how mental health is shaped by our experiences, culture, environment, and access to care. These experiences strengthened my belief that everyone deserves compassionate, respectful, and evidence-based mental health support. I believe there is more to every person than what meets the eye. Behind every struggle is a unique story, and sometimes, what people need most is someone who will truly listen without judgment and help them rediscover their strength and hope. As a psychiatric mental health nurse practitioner, I am passionate about combining meaningful human connection with personalized treatment to help individuals navigate challenges, improve their well-being, and move toward a more fulfilling life. For me, this work is more than a profession—it is a calling rooted in compassion, purpose, and the belief that healing and growth are possible.
What types of clients do you work best with?
I work best with adolescents and adults who are seeking to feel understood, find clarity, and navigate life’s challenges with greater confidence and hope. Whether you are struggling with anxiety, depression, ADHD, trauma, mood changes, or the pressures of everyday life, I want you to know that your feelings are valid, your story matters, and you do not have to face these challenges alone. I understand that reaching out for mental health support can feel overwhelming, especially when you have spent so much time trying to hold everything together. You don’t need to have the right words or know where to begin. My approach is rooted in empathy, curiosity, and respect for your unique experiences. I take time to listen, understand what matters most to you, and work collaboratively to find a path forward that feels right for you. My goal is to create a space where you feel safe to be yourself, comfortable asking questions, and empowered to take meaningful steps toward healing and growth. You are more than what you are going through, and together, we can work toward helping you feel more balanced, hopeful, and connected to yourself again.
What's one thing you wish all clients knew about therapy, mental health, or the healing process?
I wish every client knew that they don’t have to struggle in silence or wait until life feels unbearable to seek support. You can be strong and still need help; you can care for everyone around you and still deserve to be cared for. Healing is not a weakness, and it doesn’t happen overnight. It is a journey that unfolds at your own pace, with progress, setbacks, and moments of growth along the way. You are not defined by your diagnosis, your past, or what you are going through today. My hope is that every person I work with learns to extend themselves the same compassion they offer others, recognizes their own strengths, and understands that with the right support, meaningful change and renewed hope are possible. You don’t have to have it all figured out to begin—you just have to be willing to take the first step.
What can clients expect in their first session with you and in the early stages of therapy?
Your first session is an opportunity for us to get to know each other in a safe, welcoming, and judgmentfree space. I understand that opening up to someone new can feel intimidating, so there is no pressure to have everything figured out or know exactly what to say. I will take time to listen to your story, understand what brings you to care, explore your concerns and strengths, and learn what you hope to achieve. In the early stages, we will work collaboratively to develop a personalized treatment plan that reflects your needs, preferences, and goals. Depending on your circumstances, this may include a comprehensive psychiatric evaluation, medication management, and practical strategies to support your emotional well-being. I encourage questions and believe you should feel informed, respected, and involved in decisions about your care. Most importantly, I want you to feel heard, understood, and comfortable being yourself. Healing takes time, and we will move at a pace that feels appropriate for you. My goal is for you to leave our sessions with greater clarity, a sense of direction, and the reassurance that you do not have to navigate this journey alone.
What personal experiences or values inform your practice as a therapist/provider?
My practice is shaped by over 20 years of healthcare experience across three continents, where I have witnessed how culture, life circumstances, and access to resources influence mental health and healing. These experiences have taught me that every person carries a unique story, and meaningful care begins with listening, understanding, and meeting people where they are. I believe in treating the whole person, not just their symptoms or diagnosis. Compassion, respect, cultural sensitivity, and a commitment to evidence-based care are at the heart of my approach. My faith also grounds me in humility, purpose, and the importance of offering hope, especially when life feels overwhelming. I recognize that seeking mental health support takes courage. I strive to create a space where people feel safe to share their experiences without fear of judgment, where their voices are valued, and where treatment is a collaborative process. Above all, I believe that people are more than what they are going through. My goal is to help each individual recognize their strengths, feel empowered in their care, and move toward healing, resilience, and a more fulfilling life.
How do you tailor therapy to meet each client’s unique needs?
I believe there is no one-size-fits-all approach to mental health care because every person has a unique story, set of experiences, strengths, and needs. I begin by listening carefully and getting to know you beyond your symptoms—understanding your background, culture, life circumstances, challenges, and what matters most to you. Together, we identify your goals and develop a personalized treatment plan that reflects your preferences and needs. As a psychiatric mental health nurse practitioner, this may include comprehensive psychiatric evaluations, medication management, and practical strategies to support emotional well-being. I draw on evidencebased approaches while remaining mindful of how culture, relationships, and life experiences influence each person's journey. I also understand that needs can change over time, so I regularly check in, welcome your feedback, and adjust our approach as needed. My goal is for you to feel heard, respected, and actively involved in your care—not simply treated for a diagnosis, but supported as a whole person. Healing looks different for everyone, and we will work together to find an approach that feels meaningful, realistic, and right for you.
- Years in practice
- 23 years
- Graduating institute
- University of Massachusetts Amherst
- Graduating degree
- Doctor of Nursing Practice, Psychiatric Mental Health Nurse Practitioner