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Psychiatry in Southlake, Texas Mary Nganga, Nurse Practitioner

Gender Identity: Female (She/Her)

Ages Served: 11-74

Appointments: In-office and Online

Manages Medications: Yes

Accepts Insurance: Yes - View accepted plans

Mary Nganga, Nurse Practitioner

Mary Nganga, MSN, PMHNP

Specializes In:

ADHD
Anxiety
Attention & focus
Bipolar Disorder
Intense mood changes
Panic attacks
Stress management
See all specialties >

Mary Nganga is a Psychiatric Mental Health Nurse Practitioner Board-Certified by ANCC. She graduated with a BSN from the University of Texas Arlington and an MSN from Texas State University San Marcos. For more than 13 years, Mary has worked in various nursing departments, and her passion has been helping people struggling with mental health. Mary strongly advocates for patients and their families in prioritizing their safety while collaborating with other healthcare providers. Mary takes pride in providing holistic and individualized care, prioritizing safety, and collaborating with other healthcare providers in utilizing current evidence-based to help patients and families develop plans of care. She specializes in ADHD/ADD, Schizophrenia and other psychotic disorders, Depression, Bipolar, Anxiety, Sleep-related disorders, OCD, PTSD, DMDD, OCD, CD, Neurocognitive, and other emotional disorders. Outside of work, Mary enjoys spending time with family and her dog (Ruffy) and gardening.

Types of Care & Ages Served

Areas of Focus

Psychiatry/Medication Management

Treat and prevent mental health disorders using medication and therapy.

  • ADHD
  • Anxiety
  • Attention & focus
  • Bipolar Disorder
  • Intense mood changes
  • Panic attacks
  • Stress management
  • Anger issues
  • Autism: generally independent
  • Childhood behavioral issues
  • Depression/feeling down
  • Hair pulling & skin picking
  • Hallucinations
  • Obsessive Compulsive Disorder
  • Phobias
  • Psychosis/issues with reality
  • Schizophrenia/schizoaffective
  • School behavioral issues
  • Self-esteem
  • Self-injury or cutting
  • Sexual trauma
  • Sleep issues or insomnia
  • Trauma & PTSD
  • Unusual thoughts or beliefs

Languages

  • English
  • Swahili

Education

  • Texas State University

FAQs

Please call us at 281-819-1566 to schedule an appointment with Mary Nganga.

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See what our patients are saying about Mary Nganga

I have been struggling to find a provider that will actually listen and put forth an effort Into my diagnosis and medication treatment. It has been years Since I have found a provider that is willing to take their time to help me. My search ends here because Mary went above and beyond to figure out what works best for me and she listened to what I had to say While also asking appropriate screening questions because shes actually cares about my results! I would recommend Mary Nganga to anyone who wants an educated and and genuine provider. Thank you for making a difference!
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Shelbi F.

Shelbi F.

Jan 03, 2025
Google Google
A few adjustments were made to my wellness plan and I feel better than I have in years! From sleep to work productivity and even my communication skills as someone with inattentive ADHD who fights chronic fatigue. Mary Nganga listens. She is very supportive of me as a patient and has a wonderful spirit. I have found my Psychiatric NP for as long as she is practicing. I encourage you to see for yourself.
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Andie K.

Andie K.

Apr 14, 2026
Google Google
I have had nothing but a wonderful experience with LifeStance. There was a complicated start due to a mixup with Zocdoc, but they help me smooth it out and immediately jumped to help me. I am very grateful for Jeanette and Mary and looking forward to continuing care with them.
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Mindy S.

Mindy S.

Jan 08, 2026
Google Google
Mary is always willing to help out and explore different options, she even expedited a visit when I needed a change of meds. She's a great Psych and I'm glad to have her as my Psychiatrist
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Jerry J.

Jerry J.

Jan 21, 2026
Google Google
I had a super experience with Mary Nganga. She listened and heard me. She was very compassionate and knowledgeable. I would recommend her to anyone.
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Amy W.

Amy W.

Mar 24, 2026
Google Google
I appreciate Mary Nganga she’s very nice and listen to what I want to say. I find her helpful she explains things to me in a way I understand.
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Ray V.

Ray V.

Jun 01, 2026
Google Google
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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:

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  • 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

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