Dr. Hammill has been in outpatient private practice in adult and child psychiatry in Greenbelt since 1995. She believes in working closely with other physicians, therapists, psychologists, schools and other community agencies if it will help promote the treatment and well-being of patients and their families. Her patients come from all over Maryland when she used to be a consultant for different agencies and clinics and they have continued to follow her. Other physicians depend on her education, experience and expertise to provide second opinions and recommendations for treatment and educational placement. She sees children, adolescents and adults with mood disorders (anxiety, phobias, obsessive-compulsive disorders, depression and bipolar disorders), autism, learning disorders and attention deficit hyperactivity disorders and other psychiatric disorders with co-occurring medical conditions. She believes in providing comprehensive treatment to all her patients through medications and the different types of therapy.