Dr. Parker has been a licensed psychologist since 1982. She has maintained a private practice since then, encompassing clinical work with a wide variety of patients, children, adolescents, adults and families. She also provides case consultation and supervision to other professionals.
She has taught courses at USC, UCLA and Antioch College.

She is a member of the American Psychoanalytic Association, the International Society of Ethical Psychiatry and Psychology, and the International Society for the Psychological Treatment of Schizophrenia and other Psychoses.

Dr. Parker has presented her work at the Los Angeles Psychoanalytic Institute (formerly LAPSI, now The New Center for Psychoanalysis) in 2002, 2004, and 2005, at the American Psychological Association (Div 39) in 2006, and in seminars at the American Psychoanalytic Association conferences in 2007 (Washington, DC) and 2011 (San Francisco). She has also made presentations at annual conferences of the International Society of Ethical Psychiatry and Psychology in 2010 (New York) and 2011 (Los Angeles) and the International Society for the Psychological Treatment of Schizophrenia and other Psychoses in 2011 (San Francisco).