Ambulatory Health Care Services Trade Associations

American Academy of Ambulatory Care Nursing (AAACN)

The American Academy of Ambulatory Care Nursing is the specialty association for RNs in outpatient settings, offering education, networking, and advocacy to advance ambulatory care and telehealth nursing practice. Today it has more than 4,400 members.

https://www.aaacn.org Membership: 4,400

American Association of Nurse Practitioners (AANP)

The American Association of Nurse Practitioners is the largest national membership organization for nurse practitioners, providing advocacy, education, research, and professional resources for NPs across ambulatory and other care settings. AANP surpassed 120,000 members in 2022.

https://www.aanp.org Membership: 120,000

American College Health Association (ACHA)

The American College Health Association unites campus health services and professionals, delivering research, benchmarking, education, and best practices to improve student health and wellbeing in ambulatory college settings. ACHA counts roughly 12,000 individual members and represents more than 900 campuses.

https://www.acha.org Membership: 12,000

American Medical Group Association (AMGA)

AMGA represents multispecialty medical groups and integrated systems, offering benchmarking, policy advocacy, and leadership development to strengthen physician enterprises that deliver outpatient care. It has more than 400 member medical groups and health systems.

https://www.amga.org Membership: 400

American Physical Therapy Association (APTA)

The American Physical Therapy Association advances outpatient and other physical therapy practice through advocacy, education, research, and standards, supporting clinics and clinicians across the U.S. APTA represents about 100,000 members.

https://www.apta.org Membership: 100,000

American Telemedicine Association (ATA)

The American Telemedicine Association convenes providers, health systems, payers, and technology firms to expand safe, effective virtual care through policy advocacy, standards, and education. ATA reports a network of 10,000+ members.

https://www.americantelemed.org Membership: 10,000

America’s Physician Groups (APG)

America’s Physician Groups is the national association of physician groups practicing risk-bearing, value-based care, providing advocacy, performance measurement, and best-practice exchange for ambulatory delivery systems. APG represents approximately 340 physician groups caring for ~90 million patients.

https://www.apg.org Membership: 340

Ambulatory Surgery Center Association (ASCA)

The Ambulatory Surgery Center Association advocates for ASCs on payment and regulatory policy, and equips centers with education, benchmarking, and operational resources. ASCA represents more than 6,200 Medicare‑certified ASCs nationwide.

https://www.ascassociation.org Membership: 6,200

Association of Cancer Care Centers (ACCC)

ACCC is the leading education and advocacy organization for cancer programs and practices, offering operations guidance, workforce tools, and policy leadership for outpatient oncology. Its network includes 1,700 hospitals and practices and 45,000 multidisciplinary providers.

https://www.accc-cancer.org Membership: 1,700

Association of Diabetes Care & Education Specialists (ADCES)

ADCES is the interdisciplinary association for diabetes care and education specialists, delivering standards, training, and advocacy that enhance outpatient diabetes prevention and management. It has 11,000–12,000 professional members.

https://www.adces.org Membership: 12,000

Home Care Association of America (HCAOA)

HCAOA is the national voice for home care agencies providing non‑medical and personal care in the home, offering advocacy, compliance education, and peer networking that support ambulatory care at home. It represents roughly 3,000 provider organizations.

https://www.hcaoa.org Membership: 3,000

Medical Group Management Association (MGMA)

MGMA is the premier association for medical practice leaders, providing data, benchmarking, certification, and advocacy to improve performance across outpatient group practices. MGMA has 60,000+ members representing over 15,000 organizations.

https://www.mgma.com Membership: 60,000

National Association of Community Health Centers (NACHC)

NACHC is the national advocacy, training, and research organization for Community Health Centers, working to expand access and strengthen governance and operations across the CHC movement. It represents nearly 1,500 CHCs operating about 16,000 service sites and serving 32.5 million patients.

https://www.nachc.org Membership: 1,500

National Association of Free & Charitable Clinics (NAFC)

NAFC is the national association for free and charitable clinics and charitable pharmacies, advancing care for the uninsured and underinsured through advocacy, standards, grants, and education. It supports a network of 1,400+ clinics and pharmacies.

https://nafcclinics.org Membership: 1,400

National Hospice and Palliative Care Organization (NHPCO)

NHPCO is the nation’s largest membership organization for hospice and palliative care providers, offering quality standards, education, and advocacy to improve serious‑illness and end‑of‑life care across home and outpatient settings. As of late 2023, NHPCO had 1,073 organizational members.

https://www.nhpco.org Membership: 1,073

National Rural Health Association (NRHA)

NRHA is a nonprofit membership organization representing rural hospitals, clinics, and clinicians, advocating on policy and providing education to improve access and quality in rural ambulatory care. It has approximately 18,000 members.

https://www.ruralhealth.us Membership: 18,000

Outpatient Ophthalmic Surgery Society (OOSS)

OOSS represents the ophthalmic ambulatory surgery center community, providing advocacy, benchmarking, and education tailored to outpatient eye surgery programs. More than 500 centers actively engage with OOSS.

https://www.ooss.org Membership: 500

Radiology Business Management Association (RBMA)

RBMA is the leading association for radiology business leaders, offering education, analytics, and advocacy that support outpatient imaging centers and radiology practices. It has just over 2,000 members nationwide.

https://www.rbma.org Membership: 2,000

Renal Healthcare Association (RHA)

The Renal Healthcare Association represents independent and community‑based dialysis providers, advancing policy, education, and operational excellence across outpatient dialysis. RHA reports 150 member companies operating 1,300+ dialysis facilities.

https://www.renalhealthcare.org Membership: 150

Urgent Care Association (UCA)

UCA is the trade association for urgent care, supporting centers and clinicians with standards, accreditation, education, and national advocacy to advance on‑demand ambulatory care. UCA’s membership includes more than 4,000 urgent care centers.

https://urgentcareassociation.org Membership: 4,000