Registered nurses (RNs)

Licensed^a (as of 2004)

2,909,357

RN with advance practice preparation and credentials in oncology^a (2004)

2,573

Member of Oncology Nursing Society^b (2006)

33,000

Oncology Certified Nurse (OCNs)^c (2006)

21,195

Advanced Oncology Certified Nurse (AOCN)^c (2006)

1,381

Certified Pediatric Oncology Nurse (CPONs)^c (2006)

1,261

Advanced Oncology Certified Nurse Practitioner (AOCNP)^c (2006)

313

Advanced Oncology Certified Clinical Nurse Specialist (AOCNS)^c (2006)

128

RN with advance practice preparation and credentials in psychiatry/mental health^a (2004)

19,693

Clinical nurse specialists in adult psychiatric and mental health^d (2007)

6,851

Clinical nurse specialist in child and adolescent mental health^d (2007)

988

Family psychiatric and mental health nurse practitioner^d (2007)

635

Adult psychiatric and mental health nurse practitioner^d (2007)

1,750

Social workers

Employed social worker^e (2004)

562,000

Social worker employed in mental health and substance abuse services^e (2004)

116,000

Social worker employed in medical and public health^e (2004)

110,000

Social worker employed in child, family, and school social services^e

272,000

Licensed social worker^f (2004)

310,000

Member of National Association of Social Workers^g (2006)

149,621

Member of Association of Oncology Social Work^h (2007)

1,000

Member of Association of Pediatric Oncology Social Workersⁱ (2006)

303

Certified by the Board of Oncology Social Work Certification^j (2007)

236

Psychologists

Licensed^k (2004)

179,000

Member (worldwide) of American Psychological Association (APA)^l (2006)

148,000

Member of APA Health Division^m (2006)

532

Mental health counselors

Licensedⁿ (2004)

96,000

Pastoral counselors

Certified^o (2006)

3,000