Our office will be closed on Monday, January 19, 2026, in observance of Martin Luther King Jr. Day.
We will resume normal operating hours on Tuesday, January 20, 2026.

Joan Wamahiu Headshot

Specialties:

  • Anxiety
  • Attention-deficit/hyperactivity disorder (ADHD)
  • Bipolar disorder
  • Depression
  • Dissociative disorders
  • Family conflict/issues
  • Military/veterans’ issues
  • Mood disorders
  • Psychosis
  • Trauma
  • And much more

Joan Wamahiu,

Psychiatric Nurse Practitioner

, PMHNP-BC

Accepting new patients, please book here.

As a psychiatric nurse practitioner, I’ve cultivated my practice across diverse mental health settings, finding deep fulfillment in outpatient care and emergency crisis intervention. To me, there’s something truly meaningful about building genuine connections with people over time, accompanying them through their healing path with all its ups and downs. Throughout my ER crisis work, I’ve also recognized the quiet power of being a steady presence, offering immediate assistance when everything feels overwhelming.

Over the years, I’ve had the privilege of supporting individuals and families across all age groups and cultural backgrounds. These experiences have shaped my approach with deep empathy, cultural humility, and a strong commitment to meeting people exactly where they are. I’ve worked closely with children, their families, young adults finding their footing, middle-aged adults navigating life complexities, and older adults facing life transitions. I also find deep meaning in supporting individuals navigating unique challenges, including those from underserved or marginalized communities such as veterans, immigrants, and BIPOC populations.

In my practice, I provide individualized medication management integrated with psychotherapy and holistic approaches that consider the whole person. My areas of expertise include depression, anxiety, trauma, bipolar disorder, attention-deficit/hyperactivity disorder (ADHD), and psychosis, as well as maternal mental health, identity exploration, cultural concerns, and relationship challenges. Between our sessions, I often suggest manageable homework exercises to help ground our work in daily life. I also incorporate nutraceuticals when needed and offer nutritional guidance, recognizing the powerful connection between what we eat and how we feel.

When we work together, you’ll find a space free of judgment where I strive to destigmatize mental healthcare, particularly for diverse communities facing unique barriers. I believe healing happens in partnership — insights about your own life combined with my clinical expertise create something more powerful than either of us could achieve alone. Whether you’re looking for immediate relief or deeper transformation, my focus remains on empowering you to feel genuinely understood and supported throughout your journey.

Learn more about Joan by checking out her clinician spotlight.

Why Work with Me?

I’ll never position myself as the expert on your lived experience – instead, I’ll offer tools, insights, and compassionate guidance while recognizing the wisdom you already carry. I work to create an environment where you feel motivated to participate in your mental health journey, offering personalized guidance that acknowledges each unique situation. My greatest hope is that through our partnership, you’ll rediscover your inherent capacity for strength, healing, and growth.

My Professional Credentials & Service Details

Initial Assessment, Medication Management, Women’s Mental Health Consultation
Massachusetts (Virtual), New Jersey (Virtual), New Jersey (Montclair In-Person)
Aetna
Blue Cross Blue Shield-MA
Centivo
Cigna (Evernorth)
First Health
Harvard Pilgrim Health Care
Horizon Blue Cross Blue Shield-NJ
Humana
Medicare
Northwell Direct
Optum
Oscar
Self-Pay (Out of Pocket)
TRICARE East
Tufts Health Plan
United Healthcare (UHC)
Wellfleet
Other
English

“We are committed to providing you with the best patient experience as we support your mental health journey. Your well-being is our priority, and we’re here to support you every step of the way.”

Joan Wamahiu Headshot

Joan Wamahiu

, Psychiatric Nurse Practitioner

, PMHNP-BC

Accepting new patients, please book here.

Initial Assessment, Medication Management, Women’s Mental Health Consultation
Massachusetts (Virtual), New Jersey (Virtual), New Jersey (Montclair In-Person)
Aetna
Blue Cross Blue Shield-MA
Centivo
Cigna (Evernorth)
First Health
Harvard Pilgrim Health Care
Horizon Blue Cross Blue Shield-NJ
Humana
Medicare
Northwell Direct
Optum
Oscar
Self-Pay (Out of Pocket)
TRICARE East
Tufts Health Plan
United Healthcare (UHC)
Wellfleet
Other
English