24/7 Assessments

Our Leadership

Neil Callahan CEONeil Callahan
Chief Executive Officer

“I want every patient to experience staff who reflects interest and compassion for their patients, and provide a variety of therapeutic interventions that may be used for the rest of someone’s life, making this an effective start point to each person’s treatment and recovery.”
As a teenager, Neil followed in his mother’s footsteps providing direct care support for persons with intellectual disabilities when he began work as a recreation therapist assistant in New York, where he grew up. Neil was drawn to healthcare, particularly mental health care.

He began his career in Healthcare Administration in the 1980’s and progressively worked as a contract consultant, program director, regional director, and vice president developing, managing, and marketing quality psychiatric services across the United States.

As Chief Executive Officer at Brooke Glen Behavioral Hospital, Neil applies his invaluable depth of experience with general and specialized psychiatric care services to his focused commitment of leading BGBH in providing ever expanding comprehensive therapeutic treatment.


Glenn-GabriGlenn Gabri
Chief Financial Officer

Glenn earned his bachelor’s in accounting from Villanova University in 1989.

He has worked in various capacities within the healthcare accounting and investment management fields.

Within behavioral health, Glenn has served in various financial capacities for over 10 years. Glenn has earned the right to use both the CFA and CMA designations.


Chand NairChand Nair, MD
Chief Medical Director
Board Certified, American College of Psychiatry and Neurology
General Adult, Child/Adolescent, and Addition Psychiatry
President Elect, Local Chapter Indo-American Psychiatric Association

“Every patient should leave our care more enriched, empowered, hopeful, and in some form or fashion better, regardless of how long or short their treatment.”As an immigrant who grew up in a large city in India, Dr. Nair has always been keenly sensitive to human struggle and drawn to helping those who have difficulty “seeing light at the end of the tunnel.” A bright and popular student, others relied on him for help with their studies, and personal challenges. During medical school residency, Dr. Nair moonlighted at an inner-city family practice clinic where he gained invaluable experience in internal medicine.

After graduating cum laude and receiving the “Evanston, Illinois Outstanding Young Professionals for Psychiatry Award”, in 1991, Dr. Nair moved to the United States.

While completing psychiatric residency training in Philadelphia, Dr. Nair continued to receive several additional awards and entered the field of Psychopharmacology Research where he became well versed in the development of new medications and published more than a dozen peer -reviewed papers.

After seven years in research, Dr. Nair returned to direct practice and began his work in psychiatric crisis centers and acute inpatient hospital settings. In 2005 Dr. Nair joined BGBH as a member of the psychiatric medical staff, began studying for his master’s degree in Medical Management and soon moved into the Medical Director role.

As an active member of the American Board of Psychiatrists and Neurologists and American Society of Clinical Psychopharmacology, Dr. Nair has recruited maintained and recruited many talented clinicians who share his vision of delivering high quality standard psychiatric care that supports each patient in discovering hope and empowerment in their recovery.


Ayana Walker
Director of Social Services/Patient Advocate

“As result of our care, patients and their families should have gained a better understanding of their diagnosis, symptoms, and effective coping skills and be opened to more lines of service to use after discharge.”

Ayana began her career as a caseworker assisting low-income families in securing affordable childcare. Later, she worked with a managed care company helping members access psychiatric services. These experiences inspired Ayana to pursue an undergraduate degree in psychology, followed by a master’s degree in Social Work.

Internship experiences at a treatment facility for LGBT-questioning youth and a residential substance abuse program for women deepened her passion and commitment to helping others and sparked her interest in health care management, leading her to earn a second master’s degree in Business Administration.

Seeking an opportunity to work in a “team approach” treatment environment Ayana chose to join BGBH in 2006, as a Social Worker. In 2008, Ayana was promoted to Director, Social Services, which she leads by partnering with patients and their families to conduct comprehensive assessments used to develop individualized plans for treatment and post-hospitalization aftercare.