Our Providers

Olalekan Ajayi is a board-certified Psychiatric-Mental Health Nurse Practitioner (PMHNP) who graduated from Walden University. He is a highly skilled professional with thirteen years’ overall nursing experience, five years in psychiatry before he went back to school and became licensed as a PMHNP. Olalekan’s experience encompasses a commitment to delivering exceptional, qualitative, and compassionate patient care to diverse and multicultural client mixtures.

He has a holistic understanding of psychiatric and medical techniques, processes, and the unique protocols of the Psychiatric-Mental healthcare delivery in outpatient settings, community, correctional health care systems, hospitals, nursing homes, and assisted living facilities. The years of experience bring to fore proficiency in obtaining a history, carrying out a physical assessment, diagnosing, implementing treatment, and evaluating care outcomes while maintaining safety and promoting client dignity, respect, and in accordance with each facility’s policies and procedure.

Note: Mr. Ajayi works in the Hunt Valley Office, as well as provides Telehealth Services.

Dr. Collins received his Medical Degree from the University of Maryland, Baltimore, in 2003. He pursued his General Psychiatry training at Howard University, which he completed in 2007. Dr. Collins returned to the University of Maryland, Baltimore, for his Child and Adolescent Psychiatry training, which he completed in 2009. Dr. Collins specializes in medication management of psychiatric conditions.

He has particular interest in childhood related conditions, including ADHD, Anxiety disorders, and Autistic Disorders. He works with children, adolescents, and adults.

Note: Dr. Collins works in the Overlea Office, located in the Beltway Plaza and the Harford County Office.

Kwesi is a board-certified psychiatric mental health nurse practitioner with a degree from Walden University. Kwesi has 15 years of nursing experience with a focus on critical care and behavioral health. He has extensive experience treating patients with psychiatric disorders from various age groups and cultural demographics.
Specializing in a range of mental health conditions, Kwesi has honed his skills in diagnosing and treating mood disorders, anxiety, PTSD, ADHD, and schizophrenia. He approaches each patient with an individualized treatment plan, recognizing the uniqueness of their experiences and tailoring interventions to suit their specific needs. His holistic approach takes into account biological, psychological, social, cultural, and environmental factors that contribute to mental health issues.
Beyond his clinical experience, Kwesi is well known for his empathetic and non-judgmental demeanor. He strongly believes in inclusivity for people from all walks of life. He creates a safe and supportive environment where patients can openly express their thoughts and emotions. His collaborative approach focuses on building a strong therapeutic alliance that involves working closely with patients to set achievable goals, empowering them to actively participate in their healing journey.

Mr. Codrington works in our Hunt Valley office and remotely, providing Telehealth services. 

Jennifer is a board-certified Psychiatric Mental Health Nurse Practitioner who received her Master of Science in Nursing from Walden University and her Bachelor of Science in Nursing from Towson University. Jennifer has specialized training and experience in treating clients across the lifespan with various mental health conditions. She has psychiatric experience, including working in local hospitals, in the emergency room, and in outpatient clinics. Jennifer has been a nurse for over fourteen years with a background in critical care.

Since her first psychiatric clinical experience in nursing school on an acute crisis inpatient unit, Jen has been drawn to psychiatry and helping to heal the mind and body using a holistic approach. She enjoys working collaboratively with other mental health providers and individualizes each treatment plan to suit the most appropriate needs of the client. Jennifer enjoys working with clients with anxiety, depression, bipolar disorder, other mood disorders, and ADHD. She is fully dedicated to helping to improve the overall quality and well-being of her patients.

Note: Ms. Haller works in our Telehealth division and in our Delaware Offices.

Kelli has over 30 years of nursing experience, including urgent care and emergency medicine, and has worked in the emergency room for six years as a family nurse practitioner. Her passion for mental health led her to pursue her Psychiatric mental health nurse practitioner, which she completed in 2024. Her education and work experience has shaped her compassion for helping others. She looks forward to continuing her advocacy for clients’ physical and mental well-being. Her focus will be improving medication management, patient and family education, access to treatment, and providing culturally sensitive holistic care. Kelli treats clients (teenagers to seniors) with depression, ADHD, anxiety, LGBTQ population, OCD, mood disorders, sleep-related disorders, and schizophrenia.

Donna is a board-certified psychiatric mental health nurse practitioner who treats clients of all ages. She received her graduate degree from Frostburg State University and is board certified as a PMHNP by the American Nurses Credentialing Center. After over 30 years of experience as a registered nurse, she decided to become a nurse practitioner.

Donna is also a certified nurse case manager with expertise in assisting clients in navigating the healthcare system’s complexities and obtaining the care they need. Donna believes in a client-centered approach where the client is the most important part of the treatment team. She believes in the importance of therapy and medication and works closely with the client’s therapist to assist the client in attaining their treatment goals. The NP program Donna attended at Frostburg was designed to provide health care services in rural and underserved areas. As a life-long resident of the Eastern Shore of Md, she understands the challenges faced by those living in rural communities and is excited to be a part of the team at the Salisbury office.

Note: Ms. Martin works in the Salisbury Office.

Wandayi is a board certified Psychiatric Mental health Nurse practitioner who graduated from Liberty University school of Nursing. She is a dedicated and highly motivated nurse practitioner with over thirteen years of experience in nursing, 6 years in Neurology/ Psychiatry as CRNP and went back to school and became licensed as a PMNP. Wandayi brings in great work ethics, including safety, professionalism, clinical skills, critical thinking, interpersonal relationships, adaptability, accountability, with excellent communication skills, and a track record of working efficiently under stressful/emergent situations.

Through her academic and clinical experiences, she has cultivated a holistic approach to mental health care and aims to approach each client with empathy, respect and reduce stigma in mental health by advocating for her patients. Wandayi, specialty will be providing comprehensive mental health care to clients with other mood disorders, anxiety, depression, bipolar disorder, and ADHD across lifespan. She understands taking the first step to seek help can be daunting, whether you are experiencing overwhelming emotions, navigating a challenging situation or simply feeling stuck please you are not alone. Wandayi, knows many individuals face similar struggles and reaching out for support is courageous and vital step toward healing. She looks forward to meeting you.

Anissa Salerno, PMHNP, is a Child and Adult Psychiatric and Mental Health Nurse Practitioner. Anissa manages and treats a wide range of mental health concerns, including Autism, ADHD, Bipolar Disorder, Depression, Anxiety, and Eating Disorders. Her approach to care recognizes that every patient is unique and should be treated as such.

Anissa provides psychiatric evaluations and medication management with special attention to individual needs, personal history, stressful or traumatic life experiences, and concerns about medications. Anissa approaches patient care with patience, warmth, understanding, and helpful explanations that facilitate treatment and the patient’s sense of comfort and trust. She approaches treatment from a nonjudgmental space allowing the professional relationship to develop. This approach is successful in meeting the needs and desired outcomes of each client. Anissa’s primary focus is providing honest communication with her patients and quality resources for all those involved.

Note: Ms. Salerno works in the York-Belvedere Medical Center.