Oak Hill Psychological Services (OHPS) offers psychotherapy and assessment services for children, tweens, adolescents, adults and families.

Currently, our staff is comprised of three independent mental health providers: a Clinical Psychologist, a Licensed Social Worker and a Physician’s Assistant in Psychiatry. Our practitioners have extensive education, training and experience in clinical practice.

Meet Our Providers

Hayley B. Sherwood, Ph.D.

Dr. Hayley B. Sherwood, the owner of Oak Hill Psychological Services, is a Clinical Psychologist in Northern Virginia with over twenty years of experience. In her clinical practice, she provides psychotherapy and assessment services to children ages six and older, adolescents and adults from a family systems and psychodynamic perspective. Dr. Sherwood also conducts psychological evaluations to include the assessment of IQ, learning, ADHD, and social and emotional functioning.

Dr. Sherwood received her doctoral degree in Clinical Psychology from Temple University in 2000. As a graduate student, she trained at the Philadelphia Child and Family Training Center and Devereux Day School. She later completed a formal predoctoral internship in Clinical Psychology at the University of Virginia Health Sciences Center, an American Psychological Association (APA) accredited training program. Dr. Sherwood also worked with emotionally disturbed and learning disabled youth and their families in a therapeutic day school in Northern Virginia, prior to joining a group private practice in Reston in 2003.

In her clinical work, Dr. Sherwood favors a holistic approach to treatment. She regularly consults with psychiatrists, mental health providers, physicians, school personnel, attorneys, and other professionals on her clients’ behalf as needed. Dr. Sherwood is a Board Member of This Is My Brave, an organization that promotes ending the stigma of mental illness through storytelling.

A native of New England, Dr. Sherwood is the mom of two teenagers, two dogs and a cat. She enjoys music, books, movies and yoga. Her favorite authors include Sheryl Sandberg, Brene Brown, Cheryl Strayed, Glennon Doyle Melton and Adam Grant.

Wendy N. Cohen, PA-C

Ms. Wendy N. Cohen is a 2008 graduate of the Master’s of Science in Health Science, Physician Assistant program at the George Washington University in Washington, DC. She graduated at the top of her class and is a part of the Phi Kappa Phi National Medical Honor Society.

Before transitioning her career into Psychiatry, Ms. Cohen worked in Neurosurgery at Virginia Neurosurgeons in Arlington, VA and in medical research at Harvard Medical School in Boston, MA. She is board certified with the National Commission on Certification of Physician Assistants. She is also a member of the American Academy of Physician Assistants and the American Association of Psychiatric Physician Assistants along with the American Academy of Eating Disorders.

Ms. Cohen treats both adults and adolescents with anxiety disorders, depression, bipolar disorder, PTSD and other trauma related disorders, OCD, ADHD, substance abuse issues, eating disorders and neuropsychiatric illness. She works in conjunction with Johns Hopkins University to treat teens and adults with Gender Identity Disorder.

Laura Grandy, MSW

Laura Grandy, MSW, will join our practice in June 2021. Ms. Grandy specializes in working with adults and children ages 12 and older struggling with anxiety, depression, gender identity, sexuality, learning differences, trauma, and members of the LGBTQ+ community. She uses dialectical behavior therapy, cognitive behavior therapy, narrative therapy, creative arts therapies, and mindfulness strategies. Photograph coming soon!

Donna Strait, MSPT

Ms. Donna Strait, MSPT, is an Orthopedic Posture Specialist who has integrated her twenty years of Physical Therapy experience with Posture Therapy. Ms. Strait holds a Bachelor of Science from Virginia Polytechnic Institute and State University and a Master of Science in Physical Therapy from Marymount University.

As an Orthopedic Posture Specialist, Ms. Strait addresses acute and chronic pain related to posture faults in various age-groups, from adolescents, high school and college students and athletes to working professionals and the growing retirement community.

Ms. Strait has first-hand experience with acute and chronic pain associated with two cervical spine surgeries and understands how important good posture is in making a full recovery. She practices what she preaches and believes that proper posture is the missing link to health and wellness.

In STRAIT Posture Therapy, clients will see and feel immediate results. With a clinical and personalized approach, Ms. Strait treats the most common musculoskeletal problems such as headaches, arthritis, neck pain and post-surgical spine pain, shoulder impingement, rotator cuff tendonitis, carpal tunnel syndrome, lower back pain, knee malalignment and foot/ankle problems, including flat feet.

Additional benefits of Posture Therapy include osteoporosis prevention, fall risk reduction techniques, learning body mechanics for lifting, carrying, reaching, pushing and pulling for everyday tasks, including travel ergonomics and spine tips for road trips, flights, and more!

Ms. Strait is a community advocate for several local charity organizations such as: The National Kidney Foundation, where she and her team raised over $7,000 in 10 years; The Northern Virginia Alzheimer’s Association; and Susan G. Komen Global Race for the Cure and City of Hope 5K in Washington, D.C. She was also a Medical Volunteer for The World Police and Fire Games, hosted in Fairfax County, Virginia.

Please contact Ms. Strait at donna@straitposture.com to schedule a consultation.