Our Psychiatric Nurse Practitioners
Monday–Friday Williamsville, NY
Adult Psychiatry | Adolescent Psychiatry | Transcranial Magnetic Stimulation | Telepsychiatry

She provides comprehensive psychiatric evaluations, medication management, and psychotherapy for individuals experiencing:
- Major depressive disorder
- Anxiety
- Attention-deficit/hyperactivity disorder (ADHD)
- Mood disorders
- Post-traumatic stress disorder (PTSD)
- Postpartum depression
- Obsessive-compulsive disorder (OCD)
- Transcranial Magnetic Stimulation
- Mental health needs associated with intellectual disabilities
- psychopharmacological interventions
LynnMarie has a special interest in treating major depressive disorder, ADHD, mood disorders, PTSD, postpartum depression, and OCD. She offers medication management and incorporates appropriate nonpharmacological interventions to help improve patients’ well-being, daily functioning, relationships, and overall quality of life. Her goal is to support patients as well as the families and loved ones affected by their mental health journeys. She also provides evaluations and ongoing support for patients receiving Transcranial Magnetic Stimulation (TMS), an FDA-cleared, noninvasive treatment option for appropriate patients with depression and OCD. Using a collaborative, patient-centered approach, LynnMarie works closely with each patient to develop an individualized treatment plan based on their unique needs, experiences, and goals. She also collaborates with families, therapists, primary care providers, and the practice’s psychiatric and TMS team to support coordinated, comprehensive care. LynnMarie earned her Bachelor of Science in Nursing and Master of Science degree as a Psychiatric Mental Health Nurse Practitioner from D’Youville University. She holds national board certification through the American Nurses Credentialing Center. Outside the office, LynnMarie enjoys spending time with family and friends, traveling, exploring the outdoors, and spending time with her dog.
New patients ages 15 and older are accepted Monday through Friday in Williamsville and through telepsychiatry.
To schedule an appointment, click here or call 716-886-5493
Psychiatric Mental Health Nurse Practitioner
Monday-Thursday
Williamsville office & Telepsychiatry
Latrice Gillis, PMHNP-BC, is a board-certified Psychiatric Mental Health Nurse Practitioner who provides psychiatric care to patients ages 17 and older. Latrice earned her Master’s degree as a Psychiatric Mental Health Nurse Practitioner from D’Youville College. She brings extensive clinical experience to her psychiatric practice, including 20 years of experience as an Emergency Room Registered Nurse, where she also served as a Charge Nurse. Her background in emergency medicine has provided her with significant experience caring for patients with complex medical, psychiatric, and behavioral health needs.
As a Psychiatric Mental Health Nurse Practitioner, Latrice also has experience providing psychiatric care in the inpatient setting. She offers comprehensive psychiatric evaluations, medication management, ongoing psychiatric follow-up, and brief supportive psychotherapy. Latrice provides treatment for a broad range of mental health conditions, including major depressive disorder, bipolar disorder, anxiety disorders, ADHD, obsessive-compulsive disorder (OCD), post-traumatic stress disorder (PTSD), other trauma-related disorders, panic disorder, insomnia, and other psychiatric and behavioral health conditions.
Her approach to treatment is holistic and patient-centered. Latrice believes in treating the individual as a whole and works collaboratively with each patient to develop an individualized treatment plan that considers psychiatric symptoms, overall health, life circumstances, and personal treatment goals. Latrice Gillis, PMHNP-BC, is currently accepting patients ages 17 and older. To schedule an appointment, please click here to submit an online inquiry or call Williamsville Psychiatry at 716-886-5493
Justine Heitzenrater PMHNP-BC is a board certified psychiatric mental health nurse practitioner certified by the ANCC across the lifespan. She attended Trocaire College earning her associate’s degree as an RN then attended Daemon College for her bachelor’s in nursing. Justine then pursued her master’s as a psychiatric mental health nurse practitioner from D’Youville College and earned her PMHNP degree and has a strong passion for mental health and assisting adolescents and adults in the outpatient setting. Justine is well versed in working inpatient medical surgical units and will accept patients 15+.
Monday - Thursday
Jasmine Solomon is a psychiatric nurse practitioner who completed her bachelors in nursing from D’Youville College and went on to Stony Brook University to earn her masters as a psychiatric mental health nurse practitioner. Ms. Solomon has 8 years of experience as a nurse inpatient on the psychiatric units at Buffalo General Hospital and Niagara Falls Memorial inpatient psychiatric unit. She is available for psychiatric evaluations, follow-up visits for medication management, and psychotherapy and is, PTSD, and OCD across the lifespan. In her free time, she enjoys spending time with her family.
To schedule an appointment with Jasmine please call 716-886-5493.
Tuesdays, Wedensday, Thursdays - Tele/Video Visit
Fridays - Williamsville Office
Accepting New Patients Immediately via in person and tele-psychiatry
Child & Adolescent, Adult Psychiatry
Patricia Leone PMHNP-BC is a board certified psychiatric mental health nurse practitioner with ten years of experience. Patricia joined Williamsville Psychiatry in 2014 and has practiced extensively in both inpatient and outpatient settings treating patients at Eastern Niagara Hospitals on the Child & Adolescent Inpatient Unit ages 5-17 for four years and also adults above the age of 18 on the adult inpatient unit at BryLin Hospitals. Patricia has practiced outpatient and has an interest in Child & Adolescent Psychiatry. She offers appointments via in person and telepsychiatry.
Patricia offers her patients treatments appropriate for the presenting mental health issues and utilizes either pharmacological interventions or therapeutic treatment options and often combines both into her patients treatment plan.