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Emily E. Masi, Nurse Practitioner
Psychiatry in Manhattan Beach, California

Emily E. Masi, Nurse Practitioner

Specialties:
ADHD Attention & focus Menopause & perimenopause +86
Provider Gender: Female (She/Her)
Ages Served: 6-64
Appointments: In-office and Telehealth
Manages Medications: Yes
Accepts Insurance: Yes - View accepted plans

Emily Masi, PMHNP, helps children, teens, adults, and seniors across California access compassionate, high-quality psychiatric care designed to support their stability, resilience, and overall well-being. She provides medication management with a warm, attentive, and highly personalized approach, helping patients navigate conditions such as anxiety, depression, ADHD, and trauma-related symptoms. Serving communities throughout California, she partners closely with individuals and families to create treatment plans that feel both clinically effective and deeply supportive.

Emily is especially passionate about women’s mental health and reproductive psychiatry, including care related to puberty, perinatal and postpartum challenges, hormonal transitions, menopause, and reproductive stressors. She also brings strong expertise in supporting individuals experiencing later-life transitions, grief, and insomnia. Her work centers on helping patients understand the biological, emotional, and environmental factors shaping their symptoms so they can regain a sense of control and confidence in daily life.

In addition to her core focus areas, Emily has extensive experience supporting autism spectrum disorders, developmental disabilities, and first responders and military veterans, and she provides care for additional populations with unique and diverse needs. She also assists with workers’ compensation and disability-related documentation as part of comprehensive patient support.

Outside of her clinical work, Emily enjoys exploring new places with her family—from quick weekend getaways around Los Angeles to international travel. She stays actively involved in her community through her book club, volunteer work at her children’s school, youth sports, and local event planning. Her home life is rooted in faith, cultural connection, and shared traditions, and she loves celebrating her family’s Hawaiian and Italian heritage through food, stories, and dance.

Provider Introduction

Types of Care & Ages Served

Areas of Focus

Psychiatry/Medication Management

Treat and prevent mental health disorders using medication and therapy.

  • ADHD
  • Attention & focus
  • Focus, concentration & memory
  • Menopause & perimenopause
  • Other women's health concerns
  • PMS & PMDD
  • Ability status
  • Adoption & foster care
  • Aging
  • Alcohol use
  • Anger issues
  • Anxiety
  • Attachment issues
  • Autism: generally independent
  • Bipolar Disorder
  • Body image
  • Brain/head injuries (TBI)
  • Bullying or harassment
  • Career & relationships (mid-life)
  • Career & work issues
  • Caregiving
  • Childhood behavioral issues
  • Chronic pain-related issues
  • Conditions caused by stress
  • Depression/feeling down
  • Detachment/disconnection
  • Dissociative disorders
  • Domestic violence & abuse
  • Drug/substance use
  • Early adulthood: Independent living or relationships
  • Early adulthood: Starting college or career
  • Eating issues: binging
  • Emotional abuse
  • Empty nesters
  • End-of-life challenges
  • Ethnic identity
  • Family conflict
  • Fertility
  • First responder stress
  • Gambling
  • Gender identity
  • General relationship issues
  • Grief & loss
  • Hair pulling & skin picking
  • Hallucinations
  • Hoarding
  • Immigration/cultural status
  • Intellectual challenges: generally independent
  • Intense mood changes
  • Learning challenges
  • LGBTQ+
  • Marital stress or divorce
  • Men's health/issues
  • Military & veteran
  • Obsessive Compulsive Disorder
  • Other addictive behaviors
  • Other neurological conditions
  • Panic attacks
  • Parenthood
  • Parenting
  • Phobias
  • Pornography/sexual behaviors
  • Post-partum depression & anxiety
  • Pre-conception
  • Pregnancy
  • Pregnancy loss
  • Premarital counseling
  • Psychosis/issues with reality
  • Racial identity
  • Religion & spirituality
  • Retirement
  • Schizophrenia/schizoaffective
  • School avoidance
  • School behavioral issues
  • Self-esteem
  • Self-injury or cutting
  • Sex & intimacy issues
  • Sexual trauma
  • Sleep issues or insomnia
  • Social injustice
  • Social skills & communication
  • Sports performance
  • Stress from ongoing health issues
  • Stress management
  • Stroke-related conditions
  • Trauma & PTSD
  • Unhealthy eating habits
  • Unusual thoughts or beliefs
  • Video game/internet

Languages

  • English

Education

  • Hawaii Pacific University

  • University of Southern California

  • Concordia University Irvine

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Frequently Asked
Questions

Please use our online form to schedule an appointment with Emily E. Masi. You can also call 925-282-1778 to have someone assist you.

See what our patients are saying about Emily Masi

Therapists and psychiatrists are attentive and kind. They care about you and are responsive to your needs. They are caring and they are helpful. I highly recommend.
Read Full Review
Michele Kalis (Muneera K.

Michele Kalis (Muneera K.

Sep 26, 2025
Google Google
Very pleased with Dr Ines attention to root cause and long term planning.
Read Full Review
Stephen S.

Stephen S.

Oct 07, 2025
Google Google
Great! Very knowledgeable and patient and answered all my questions
Read Full Review
Anonymous

Anonymous

Aug 04, 2025
WebMD WebMD
Excellent experience
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Andi C.

Andi C.

Jan 27, 2026
Google Google
Excellent experience
Read Full Review
Kevin M.

Kevin M.

Jan 21, 2026
Google Google
Excellent experience
Read Full Review
Kasi S.

Kasi S.

Apr 13, 2025
Google Google
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Patient Review Disclaimer

The testimonials and reviews shared on our platforms reflect the personal experiences and opinions of individuals voluntarily shared on third-party sites (e.g., Google). These reviews are voluntarily provided and are not compensated, solicited, or endorsed by LifeStance Health.

Important Notes:

  • Reviews do not represent the views of LifeStance Health, Inc., its clinicians, or affiliates
  • Individual results may vary – testimonials are not guarantees of similar outcomes
  • We do not independently verify the clinical accuracy or authenticity of statements
  • Clinician qualifications, expertise, and fit for your specific needs should be assessed through direct consultation
Emily E. Masi, Nurse Practitioner

Emily E. Masi

Psychiatry in Manhattan Beach, California

New patient?

View Availability

Already have an appointment?

Video visit waiting room Join Now
Existing patient portal Sign in