Welcome to Acadia Psychiatry, PLLC

Shannon is a Board-Certified Psychiatric Nurse Practitioner available to pediatric, adolescent, and adult patients ages 6 years and older in the state of Maine.  Shannon enjoys working with patients across the lifespan and has a particular interest in the perinatal mental health as well as trauma patients, and first responders.  

Shannon has been a Registered Nurse since 2005 after graduating from Texas Woman's University with honors. She began her career on a telemetry unit  caring for patients with congestive heart failure.  She then did several years in the Coronary Care Unit at St. Luke's Hospital in the Texas Medical Center where she cared for patients post coronary events and specialized in the post myocardial infarction hypothermia protocol.

Shannon graduated from Baylor College of Medicine with a Masters of Science in Nurse Anesthesia degree in 2011 with honors.  Her first job as a Certified Registered Nurse Anesthetist (CRNA) was at the Michael E. DeBakey Veterans Affairs Medical Center in Houston, Texas.  Shannon did anesthesia for a wide array of procedures including: ENT, Vascular, Eye, Pulmonary, Urology, and ECT treatments.

Shannon worked for 8 years at the Sacred Heart Medical Center in Spokane, WA for Providence Medical Group.  Shannon specialized in Obstetrical Anesthesia and Trauma Anesthesia during that time.  It is during this time that Shannon developed a special interest in caring for the peri-partum population.

In addition to the above, Shannon also spent time providing anesthesia for pediatric dental cases, oral surgery cases, and gastroenterology cases at freestanding ambulatory surgical centers as an independent anesthesia provider.

In 2022,  Shannon graduated with a 4.0 GPA from the University of Cincinnati with her Post-Masters Certificate in Psychiatric Mental Health Nurse Practitioner Program-Across the Lifespan.  Her trainings included clinicals at Neurotherapy Northwest specializing in Neurotherapy, Biofeedback, and Quantitative EEG monitoring under the instruction of Dr. Linda Larson PhD.  Shannon also completed clinical trainings at Daybreak Youth Services in Spokane, WA which is an inpatient addiction treatment center for teen girls.

Effective May of 2024, Shannon is a PeriPartum Mental Health Certified Provider through Postpartum Support International.  Shannon completed the Psychopharmacology track training and passed the certification exam.  She is listed in the PSI Online Provider Directory which can be found at psidirectory.com

Effective March of 2025, Shannon completed a specialty ADHD Clinical Services Provider Training program and obtained her certification.

Effective August of 2025, Shannon completed a specialty Autism Clinical Services Provider Training program and obtained her certification. 

Effective December of 2025, Shannon completed a specialty certification for Cognitive Behavioral Therapy for Insomnia.

In the Spring of 2026, Shannon completed  BRIA menopause training (in Canada) refers to a specialized educational program for healthcare professionals focused on mental health during perimenopause and menopause. 

Julie Anne specializes in working with patients ages 12 years old and up through adulthood. She enjoys helping adolescents navigate those early teen years and working closely with family members. Julie Anne also has extensive experience working with adults and common mental health conditions such as ADHD, Anxiety, Depression, Mood Disorders, and Addiction. 

Julie Anne earned her Bachelor's of Science Degree in 2020 from Wilmington University.  She then completed her Master's of Science in Nursing Degree from Herzig University in 2023 where she became a Psychiatric Mental Health Nurse Practitioner.  Julie Anne has been working in the medical field since 2009.

Julie Anne believes in creating individualized patient-centered treatment plans that allow patients to feel at ease with their mental health journey. She strives to ensure every patient receives compassionate behavioral health care in a stigma-free environment.

Effective September of 2025, Julie Anne completed a specialty Autism Clinical Services Provider Training program and obtained her certification.

Effective Fall of 2025, Julie Anne completed a specialty ADHD Clinical Services Provider Training program and obtained her certification.

Hailey is a Psychiatric Mental Health Nurse Practitioner with over seven years of experience providing compassionate, evidence-based psychiatric care across inpatient and outpatient settings. She specializes in pediatric and adolescent mental health and is dedicated to delivering individualized, developmentally appropriate care that supports both patients and their families.

As a pediatric PMHNP, Hailey conducts comprehensive psychiatric evaluations, develops and implements treatment plans, provides medication management, and offers psychotherapy and counseling. She places strong emphasis on meeting patients where they are emotionally and developmentally, while advocating for their rights, safety, and access to appropriate mental health services.

Hailey’s clinical background includes leadership roles as a psychiatric charge nurse in pediatric and adult inpatient settings, where she coordinated care, collaborated closely with interdisciplinary teams, and supported patients with complex behavioral and medical needs. Her earlier experience in behavioral health, applied behavior analysis (ABA) services, and direct patient care has given her a well-rounded understanding of child development, behavioral interventions, and collaborative treatment models.

She values teamwork and works closely with families, therapists, schools, and medical providers to achieve the best possible outcomes. Hailey is committed to creating a supportive, respectful, and therapeutic environment where children and adolescents can build resilience, stability, and long-term emotional wellness.

Hailey completed her Master of Science in Nursing with a specialization in Psychiatric Mental Health Nursing at Walden University, where she received advanced training in psychiatric assessment, diagnosis, psychotherapy, and medication management across the lifespan. Her graduate education emphasized evidence-based practice, ethical care, and collaborative treatment approaches, with a strong focus on pediatric and adolescent mental health.

She earned her Bachelor of Science in Nursing from Walden University, building a solid foundation in clinical nursing practice across medical and psychiatric settings. Prior to nursing school, Hailey completed a Bachelor’s degree in Health Sciences with a concentration in Behavioral Health from the University of South Florida, where she developed a strong understanding of mental health conditions, behavioral interventions, and human development.

Hailey began her nursing career with an Associate Degree in Nursing from Rasmussen College and graduated high school with High Honors, reflecting her long-standing commitment to academic excellence and professional growth.

Effective March of 2026, Hailey completed a specialty ADHD Clinical Services Provider Training program and obtained her certification.

With 13 years of experience in outpatient and inpatient behavioral health settings, Emily brings a strong foundation in psychiatric assessment, therapeutic communication, and interdisciplinary collaboration. Emily is committed to delivering patient-centered, ethical mental health care that emphasizes shared decision-making, respect for client autonomy, and evidence-based practice. 

Emily is a Board-Certified Psychiatric Mental Health Nurse Practitioner dedicated to providing compassionate, evidence-based care tailored to each individual. Emily approaches treatment with the understanding that mental health is deeply personal.  Emily can help you by offering a safe, nonjudgmental space where your concerns are heard and taken seriously. Her goal is to work collaboratively with you to develop a treatment plan that aligns with your values, whether that includes medication management, psychotherapy-informed support, or lifestyle interventions.

Emily has experience treating a wide range of conditions, including anxiety, depression, trauma-related disorders, and more complex presentations such as treatment-resistant symptoms and co-occurring conditions. Emily strives to stay current with best practices and emerging treatments to provide the highest quality care.

Emily earned her Master of Science in Nursing as a Psychiatric-Mental Health Nurse Practitioner from the University of Maine at Fort Kent in 2025, graduating with an exceptional 4.0 GPA that reflects her dedication to academic excellence and clinical mastery. 

She previously completed her Bachelor of Science in Nursing at the University of Maine from 2008 to 2012, building a strong foundation in patient-centered care. 

In addition to her formal education, Emily has been serving as a Mental Health Clinical Instructor since 2022 for both the University of Maine and Eastern Maine Community College, where she is committed to mentoring and preparing the next generation of nurses with a focus on compassionate, evidence-based mental health care. 

Kenzie is a highly skilled Psychiatric Mental Health Nurse Practitioner whose practice is grounded in extensive inpatient psychiatric experience and a strong foundation in executive nursing leadership. Her clinical background has equipped her with the ability to assess, diagnose, and treat a wide range of complex psychiatric conditions, while maintaining a calm, thoughtful, and patient-centered approach even in high-acuity settings. 

Kenzie brings a deep understanding of systems-level care, allowing her to not only support individual patients but also contribute meaningfully to care coordination and quality improvement. Her leadership experience enhances her ability to communicate effectively with multidisciplinary teams, advocate for patients, and implement evidence-based practices. 

Kenzie is committed to delivering compassionate, ethical, and collaborative mental health care, ensuring that each patient feels heard, respected, and supported in their journey toward stability and wellness.

Kenzie Densmore earned her Master of Science in Nursing with a Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) certification from Chamberlain University in February 2026. She previously attended the University of Maine, where she completed both her Bachelor of Science in Nursing (BSN) and a Bachelor of Arts in Psychology. This strong academic foundation, combining nursing and psychology, supports her comprehensive and thoughtful approach to mental health care.

At Acadia Psychiatry, we are committed to providing high-quality, compassionate psychiatric care while also helping to educate and mentor the next generation of mental health providers. We are pleased to announce that Acadia Psychiatry is now serving as a clinical teaching practice for Psychiatric Mental Health Nurse Practitioner (PMHNP) students.

As part of this initiative, qualified PMHNP students may periodically participate in patient care experiences under the direct supervision of our licensed providers. These students are advanced practice nurses completing specialized graduate-level psychiatric training. Their involvement allows them to gain valuable clinical experience while contributing to the future of accessible mental health care in our communities.

However, patient involvement in any educational experience is always completely voluntary.

We obtain patient consent prior to any PMHNP student being involved in a patient’s care, appointment, or clinical observation. Patients have the right to decline student participation at any time without any impact on the quality of care they receive. Our priority is to ensure every patient feels respected, comfortable, and fully informed throughout their treatment experience. 

We are especially excited to introduce our first PMHNP student, Giselle Robertson, FNP.

Giselle is an experienced Family Nurse Practitioner with more than 17 years of diverse clinical experience across primary care, urgent care, dermatology, pain management, and correctional medicine.

She currently serves as Medical Director for the Washington County Sheriff’s Department & Jail, where she oversees care for individuals with complex medical, psychiatric, and substance use disorders and leads the facility’s Medication-Assisted Treatment (MAT) program.

Throughout her career, Giselle has provided care in both rural and underserved communities throughout Maine. Her extensive background includes managing chronic medical and behavioral health conditions, urgent care medicine during the COVID-19 pandemic, chronic pain management, and comprehensive primary care. 

She is currently completing a Post-Graduate Certificate as a Psychiatric Mental Health Nurse Practitioner at the University of Maine at Fort Kent, with an anticipated completion date of November 2026. She earned her Master of Science in Nursing – Family Nurse Practitioner from Husson University in Bangor, Maine, and also holds degrees from the University of Southern Mississippi and the University of Maine.

Giselle brings a thoughtful, compassionate, and patient-centered approach to care, with a strong interest in serving individuals with complex psychiatric conditions and co-occurring substance use disorders. During her clinical training, Giselle will be shadowing various PMHNP providers within our practice as part of her educational experience.

Patient comfort, privacy, and autonomy remain our highest priorities. Participation in visits involving students is always voluntary. If at any time you prefer not to have a student present during your appointment, please simply let our staff know, and we will fully respect your wishes.

We are honored to have Giselle training with our practice and are confident that her professionalism, experience, and dedication will make her an excellent addition to our clinical team.

Acadia Psychiatry is pleased to welcome Marissa Hunter, RN, BSN, as a Psychiatric Mental Health Nurse Practitioner (PMHNP) student joining our teaching practice.

Marissa is currently pursuing her Master of Science in Nursing at Walden University, where she maintains a 4.0 GPA. She brings a strong clinical background in both critical care and inpatient behavioral health nursing through her work with TidalHealth Peninsula Regional. Her experience also includes serving as a Research Nurse and Study Coordinator in Advanced Therapeutics, where she worked closely with patients, physicians, and interdisciplinary teams in the coordination and execution of clinical trials.

In addition to her nursing background, Marissa earned a Bachelor of Arts in Psychology from Swarthmore College, reflecting a longstanding commitment to understanding and supporting mental health and human behavior. Throughout her career, she has demonstrated dedication to patient advocacy, education, clinical excellence, and evidence-based care. 

Her involvement in professional committees, research collaboratives, and community advocacy organizations further highlights her passion for improving patient outcomes and advancing healthcare practice.

As part of her PMHNP training, Marissa will be shadowing and learning alongside providers at Acadia Psychiatry under clinical supervision. We are excited to support the education and development of future psychiatric providers while continuing to provide compassionate, high-quality care to our patients and community.

At Acadia Psychiatry, patient participation in any educational experience is always voluntary, and patient consent is obtained prior to any student involvement in care.

Tanya & Melissa- Billing.  They can be reached via email: billing@acadiapsychiatry.com