Meet our Team

MedStar Harbor is dedicated to a multidisciplinary approach to behavioral health care. Our psychiatrists work as a team with our psychologists, social workers, clinical counselors, psychiatric nurses, and licensed therapists to address all patient needs. We also work closely with family members, as appropriate, to customize a treatment plan that may include continued psychiatric consultation, psychological education, symptom management, supportive group therapy, expressive therapy, and medication education.

Meet Our Behavioral Health Specialists

Location Information

For more information, please call 

410 350-7550

Elias Shaya

Elias K. Shaya, MD, DFAPA

Elias K. Shaya, MD, DFAPA, serves as The MedStar North Regional Medical Director and Senior Associate Executive Director for Behavioral Health Services at MedStar Health, the largest healthcare system in the Baltimore-Washington region.

Dr. Shaya is a Past President and Council Chair of the Maryland Psychiatric Society.

In addition to his administrative and leadership responsibilities, he maintains an active clinical practice, specializing in geriatric psychiatry, dementia, and mood disorders. He holds part-time faculty appointments in Radiology and Medicine at The Johns Hopkins University and in Health Sciences at the George Washington University.

Dr. Shaya, one of the first clinicians in the country to receive dual training in psychiatry and nuclear medicine, has experience using functional brain imaging technologies, especially Positron Emission Tomography, to study neuropsychiatric disorders. Dr. Shaya's other research and interests include geriatric and neuropsychiatry, mood disorders, as well as electronic health records and innovations in care delivery, clinical documentation, CPT coding & payment models. His work has been published in journals such as Neuropsychopharmacology, The American Journal of Psychiatry, and The Journal of Neurochemistry, and he is a contributing author of the book "The Everything Health Guide to Schizophrenia: The latest information on treatment, medication, and coping strategies."

In addition to his clinical, research, and academic pursuits, Dr. Shaya serves on the Board of Directors of the MedStar Good Samaritan Hospital, Maryland Foundation for Psychiatry, and is Chairman of the Board for Drug-Free Lebanon, a non-profit organization dedicated to helping treatment centers in Lebanon provide preventive care and treatment for those afflicted with addictions.

Prior to joining MedStar, he was in private practice and early in his career, he was a researcher at Johns Hopkins University and the National Institutes of Health, where he served as a Senior Fellow at the National Institute on Drug Abuse. He is a graduate of The American University in Beirut, Lebanon, and he completed his internship and residency at Emory University Affiliated Hospitals in Atlanta, GA, followed by a fellowship at Johns Hopkins Hospital in Baltimore. He is board certified in General and Geriatric Psychiatry. He also is certified in Office-Based Treatment of Opioid Dependence with Buprenorphine.

Dr. Shaya has been a regularly invited speaker at local, national, and international meetings as well as regular appearances and interviews on TV, radio, and in print media.

Dr. Shaya has been recognized in Baltimore Magazine’s “Top Doctors” and “Guide to America’s Top Psychiatrists” for several years in a row and he is the recipient of several local and national awards, honors, and recognitions including:

  • The Distinguished Fellowship Award of the American Psychiatric Association
  • The Exemplary Psychiatrist Award of the National Alliance on Mental Illness (NAMI)

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Location Information

MedStar Harbor Hospital
3001 South Hanover St.
Baltimore, MD 21225

Reena Ardeshna

Reena Ardeshna, MD

Reena Ardeshna, MD, received her training in Psychiatry at The Johns Hopkins University School of Medicine and her medical degree from Drexel University College of Medicine. She received her bachelor's degree in Psychology from New York University and a master's degree in Biomedical Science from University of Medicine and Dentistry of New Jersey.

Dr. Ardeshna has a wide range of experience in treating various anxiety disorders, bipolar disorder, depression, schizophrenia spectrum and other psychotic disorders, and substance use disorders.

She also has experience in working across a range of care that includes specialized inpatient units, outpatient clinics, and mobile treatment.

Dr. Ardeshna collaborates with primary care physicians and families in order to provide her patients with the very best of care. She also believes in advocating for patients so that they have access to the community resources they need.


Jemima Kankam, MD, FAPA

Jemima Kankam, MD, FAPA is a board-certified psychiatrist and a Fellow of the American Psychiatric Association, specializing in Adult and Geriatric psychiatry. Before joining MedStar Harbor Hospital, Dr. Kankam worked in several psychiatric settings and was in private practice for 25 years. Dr. Kankam received her medical training from University of Ghana Medical School, Ghana, and completed her psychiatric residency training at University of Maryland Medical System in Maryland in 1990. Dr. Kankam’s clinical philosophy involves taking a comprehensive approach and empowering her patients through emphasis on patient education, especially in the areas of depression and related disorders.

Her area of special interest is promoting public awareness of psychiatric illnesses with the goal of reducing stigma and misconceptions about mental illnesses. To this end, she has been a speaker for events such as the National Depression Screening Day and National Anxiety Screening Day programs. She has also participated in public awareness activities at health fairs in churches and other community-based activities. Dr. Kankam is invested in improving mental health awareness in the general medical community and has participated in activities that promote improved recognition and treatment of mental health issues in patients by non-psychiatric physicians. She recently established a foundation to advance mental health education for the youth, with the goal of early identification and treatment of psychiatric disorders. Dr. Kankam previously served on the Maryland State advisory board for patient privacy and confidentiality and was twice listed in the Guide to America’s Top Psychiatrists.


Donna Keaveney, LCSW-C

Donna Keaveney received her Master’s degree in Social Work from the University of Maryland, Baltimore and she holds a Bachelor’s degree in Sociology from Towson State University. Donna is licensed as a certified clinical social worker (LCSW-C) through the Maryland Board of Social Work and is also a board-approved clinical supervisor. Donna has completed certificate programs in Advanced Trauma Treatment, and Substance Use Disorder Assessment & Treatment.

Donna has experience in multiple areas of mental health treatment and social work, including individual psychotherapy, group therapy, partial hospitalization/intensive outpatient, psycho-education, and case management. Since 2013 she has been working as an outpatient mental health therapist, providing psychotherapy to adult individuals.

Donna has a passion for helping people find hope, strength and purpose during life’s challenging circumstances. She has a natural gifting for encouragement, compassion & empathy and for seeing the strengths, gifts & abilities in all people. Donna provides therapy for a wide variety of behavioral health needs, including depression, bipolar disorder, anxiety disorders, trauma/PTSD, self-harm, loss/grief, anger management, recovery from abuse/trauma, self-esteem issues, relationship issues, life transition, stress management, caregiver stress and aging/geriatrics.

Donna utilizes a variety of therapeutic techniques, such as Cognitive-Behavioral Therapy, Solution-focused Therapy, Psychodynamic Therapy, Strength-based Therapy & Motivational Interviewing to promote healing, growth and positive changes in her clients.


Melanie Lyles-Williams, MSW, LCSW-C

Melanie Lyles-Williams received her Master’s degree in Social Work with a concentration in Mental Health and Management and Community Organization from the University of Maryland, Baltimore and holds her Bachelor’s degree in Psychology from Amherst College. She is licensed as a Certified Clinical Social Worker (LCSW-C) through the Maryland Board of Social Work and as an evidenced-based MAP therapist through Practice Wise and the University of Maryland.

Melanie is passionate about community work, is dedicated to her clients’ success, and focuses on meeting clients where they are. She specializes in treatment issues surrounding mood management, behavioral change, family functioning, and urban social work issues. She has a special affinity for working with children, adolescents, and young adults. Melanie has behavioral health experience working across a range of care from residential treatment to outpatient clinics, schools, in homes, in shelters, and in other community settings and is excited to now expand her work in the domain of Partial Hospitalization Program and Intensive Outpatient Program treatment.

Areas of need that Melanie treats include depression, bipolar disorder, anxiety disorders including social anxiety disorder, trauma and stressor related disorders including PTSD, anger management and impulse-control disorders, schizophrenia and schizoaffective disorders, and ADHD.  She also works with individuals and families on coping with a wide range of adjustment issues to various life circumstances and believes in the important need of partnering with community resources to help patients meet their basic needs.

Erica Matthews

Erica Matthews-Malaka, PsyD

Dr. Matthews-Malaka received her doctorate degree in Clinical Psychology from Alliant International University, California School of Professional Psychology in San Diego. She is licensed as a Clinical Psychologist by the Maryland Board of Examiners of Psychologists. Previous experience and credentials include Prolonged Exposure for PTSD, Dialectical Behavior Therapy for BPD, and Domestic Violence Treatment Provider for mandated persons.  In her previous position of clinical research coordinator at Veterans Affairs San Diego Healthcare System with Veterans Medical Research Foundation, she coordinated project activities in a randomized control trial study, conducted clinical interviews, and presented education on post traumatic stress disorder. Concurrently, she served as a psychosocial rehabilitation specialist with Community Research Foundation, a residential treatment program for individuals seeking help at a critical time in their lives.

Dr. Matthews-Malaka has experience working with individuals who struggle with issues that affect daily life ranging from everyday stressors to traumatic events. These issues manifest in anxiety, anger, depression, self esteem, body image, excessive alcohol use, addictive behaviors, violence as well as a range of other relational, psychological and emotional symptoms. In practice, Dr. Matthews-Malaka delivers evidence based treatments which are determined by scientific research and have strong support for their effectiveness. She works with the client to match the most effective approach and techniques to meet their needs and to restore their sense of wellbeing and quality of life.


William Wagner, MA, LCPC

William Wagner received his Bachelor of Arts degree in Psychology from the University of Maryland.  He earned his specialist level Masters of Arts degree in Counseling Psychology from Bowie State University. During his graduate studies, William interned with the Department of Behavior and Psychiatry at Johns Hopkins Bayview Campus in the Creative Alternatives program.  His graduate program entailed a concentration in the practices of Individual Psychology founded by Alfred Adler which focuses on the impact of birth order, family, and early childhood on an individual’s current lifestyle and persona. William is a Licensed Clinical Professional Counselor license and is certified by the State of Maryland Board of Professional Counselors and Therapists.

William has experience as an Outpatient Therapist working for the Anne Arundel Medical Center’s Pathways Addiction clinic. During his employment at Pathways, he provided therapeutic support to adolescents, adults and their families with group and individual therapy. In addition, William has provided mental health services in the public school system for the District of Columbia as a School Psychologist providing behavioral support to children and families in the school community. Also, William has experience in evaluating and analyzing the processes and impact of an individual’s intellect and their executive functioning on their daily life.

William provides therapy for a wide variety of behavioral health needs utilizing various modes of therapy for depression, mood disorders, anxiety, trauma, post traumatic stress, family dynamics, adults and children with disabilities, alcohol and drug addictions, grief and loss, hoarding, marital and relationship counseling, anger management and Attention Deficit and Hyperactive disorders.