Michelle Hamilton, PMHNP

Dr. Jerry Sayers is a double board-certified psychiatrist in General Psychiatry and Consultation-Liaison Psychiatry. Dr. Sayers completed an Internal Medicine internship in Youngstown, Ohio. He then completed his residency in General Psychiatry at The Johns Hopkins Hospital followed by fellowship training in Neuropsychiatry and Behavioral Neurology at Johns Hopkins Bayview. He most recently finished his fellowship in Consultation-Liaison Psychiatry at the University of Maryland. Dr. Sayers has had the opportunity to care for a diverse group of patients with neuropsychiatric, neurological, and other general medical conditions. His work allowed him to work on a proactive, collaborative psychiatric consultation team designed to be involved early in the care of vulnerable patients with complex neuropsychiatric conditions. Dr. Sayers has experience in outpatient, inpatient, residential, and partial hospitalization programs. He works hard to tailor therapy to the needs of the individual patient by adapting techniques that have been successful across different treatment settings. His desire to ensure exceptional care is evident in his ability to relate to and understand an individual patient's needs and concerns.

Dr. Shaughnessy is boarded in adult psychiatry and has over 30 years of experience. Dr. Shaughnessy practices medication management in a supportive collaborative environment. Treatment recommendations may include psychotherapy with another professional in addition to medication management .Dr. Shaughnessy has worked with individuals having the spectrum of psychiatric disorders but is particularly interested in working with those with mood and anxiety disorders.

MassachusettsHolly James Corrigan, RN, MSN, PMHNP, is a board-certified psychiatric nurse practitioner committed to helping people navigate their mental health with skill and heart. She earned her BSN from Russell Sage College in 2009, her MSN from Massachusetts General Hospital Institute for Health Professions in 2016, and completed Psychiatry Redefined’s Fellowship in Functional and Integrated Psychiatry in 2025. Holly keeps current by attending top conferences, like the International Trauma Conference in Boston, ensuring she’s always at the forefront of her field.

Holly’s philosophy is simple yet powerful: care should fit the person, not just the diagnosis. She’s passionate about tackling complex issues—suicide prevention, C-PTSD, chronic depression, ASD, OCD—and advocating for underserved communities. For Holly, it’s about delivering real, meaningful support to those who need it most.

Her career began as a registered nurse in neurology, pediatrics, and emergency care, before she found her calling in psychiatry. Since then, she’s provided medication management and supportive psychotherapy in outpatient clinics and worked in inpatient units serving adults and adolescents.

Holly believes in patient-centered care based on the individual, rather than focusing only on a diagnostic algorithm. The first appointment will include a comprehensive psychiatric evaluation and a discussion about what your goals of treatment are. Pharmacological and therapeutic recommendations are both important elements of the treatment plan. Follow up appointments will be more concise, but may include various therapeutic modalities, medication changes, and supportive psychotherapy.

Dr. Sadiq Mirza earned his medical degree from Western University of Health Sciences in Pomona, California, and completed his psychiatry residency in San Bernardino, California. He has experience in both inpatient and outpatient psychiatry, and for the past five years, he has worked extensively in telepsychiatry, helping patients across a variety of care settings.

New patients can expect a collaborative, patient-centered approach grounded in open communication and mutual respect. Dr. Mirza prioritizes creating a warm and supportive environment where care is personalized to meet individual needs. His style empowers patients to take an active role in their mental health journey through informed decisions and compassionate treatment.

Dr. Mirza begins by thoroughly understanding each patient's unique history and goals during the initial session. This sets the foundation for trust and transparency. Together, they create tailored treatment plans with clear, achievable objectives. Ongoing follow-ups ensure progress is tracked, adjustments are made when necessary, and care remains responsive and effective.

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Dr. James “Jim” Staudenmeier is a physician with a distinguished career in military and civilian psychiatry. A retired Colonel in the U.S. Army, he has served as a plenary and invited speaker at national and international conferences on topics including addiction, electroconvulsive therapy, hypnotherapy, and quality improvement. He is a Certified Healthcare Executive, holds a master’s degree in preventive medicine and biometrics, and has published in peer-reviewed journals. His clinical background includes pain management, addiction psychiatry, child and adult psychiatry, and academic appointments at multiple universities.

Dr. Staudenmeier values collaboration and encourages patients to ask questions, clarify expectations, and identify their primary concerns from the start. While medication management is part of care, he emphasizes insight, goal setting, and skill building. He integrates hypnotherapy, guided imagery, relaxation, and meditation to support wellness, pain management, sleep, anxiety, and addiction, tailoring treatment to each patient’s needs.

Dr. Staudenmeier takes a flexible, whole-person approach, combining medication management with evidence-based therapies such as CBT, CPT, motivational interviewing, and family-based interventions. He works comfortably with children, adults, families, service members, Veterans, and individuals facing life transitions, including end-of-life concerns. His goal is to help patients develop practical tools for lasting mental, emotional, and spiritual well-being.

Dr. Thomas O’Brien holds a Bachelor of Science degree from the University of Wisconsin–Madison and earned his medical degree from Midwestern University Chicago College of Osteopathic Medicine. He completed his psychiatry residency at Loyola University Medical Center. Dr. O’Brien has experience practicing across outpatient, PHP, IOP, and inpatient settings.

He strives to create a supportive environment where patients feel heard, respected, and understood. His approach emphasizes a holistic, whole-person method to healing, guided by the patient’s own goals and values. Dr. O’Brien integrates psychotherapy with medication management, drawing on his background in psychodynamic psychopharmacology and acceptance and commitment therapy.

Dr. O’Brien focuses on understanding each patient as a whole to create individualized treatment plans. This begins with a comprehensive history during the initial session to identify biopsychosocial factors. Treatment is then tailored to align with the patient’s unique goals and values, promoting meaningful progress.