C-M listings
N-O listings
P-Z listings

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AARP (formerly American Association of Retired Persons)
http://www.aarp.org

AcademyHealth [formerly Academy for Health Services Research and Health Policy (AHSRHP) formed by Association for Health Services Research (AHSR) and Alpha Center]
http://www.academyhealth.org

Accreditation Association for Ambulatory Health Care (AAAHC)
http://www.aaahc.org

Accreditation Council for Continuing Medical Education (ACCME)
http://www.accme.org

Accreditation Council for Graduate Medical Education (ACGME)
http://www.acgme.org

Acute Long Term Hospital Association (ALTHA)
http://www.altha.org

Advanced Medical Technology Association (AdvaMed) [formerly Health Industry Manufacturers Association (HIMA)]
http://www.advamed.org

Air Ambulance Association (AAA) [patient transportation]
http://www.the-aaa.org

Alliance for Advancing Nonprofit Health Care [AANHC]
http://www.nonprofithealthcare.org

Alliance for Health Policy and Systems Research (AHPSR) [international]
http://www.alliance-hpsr.org

Alliance for Healthcare Strategy and Marketing (AHSMA)
Ceased operation in 2001

Alliance of Claims Assistance Professionals (ACAP) [consumer assistance; medical bills; health insurance]
http://www.claims.org/

Alliance of Community Health Plans [ACHP] [managed care]
http://www.achp.org

Alliance of Independent Academic Medical Centers (AIAMC)
http://www.aiamc.org

America's Blood Centers (ABC)
http://www.americasblood.org

American Academy of Medical Administrators (AAMA)
http://www.aameda.org

American Academy of Physical Medicine & Rehabilitation (AAPM&R, AAPMR)
http://www.aapmr.org

American Academy of Professional Coders (AAPC)
http://www.aapc.com

American Accreditation HealthCare Commission/URAC
http://www.urac.org

American Ambulance Association (AAA) [emergency services]
http://www.the-aaa.org

American Association for Accreditation of Ambulatory Surgery Facilities (AAAASF)
http://www.aaaasf.org

American Association for Continuity of Care (AACC) [discharge planning]
http://www.continuityofcare.com

American Association for Homecare (AAHomecare) [formerly Nat Assn for Medical Equipment Services (NAMES), Home Health Services and Staffing Assn (HHSSA), Health Industry Distributors Assn Home Care Div (HIDA Home Care), American Home Care Assn [AHCA]]
http://www.aahomecare.org

American Association for Medical Transcription (AAMT)
http://www.aamt.org/

American Association of Ambulatory Surgery Centers (AAASC)
http://www.aaasc.org

American Association of Blood Banks (AABB)
http://www.aabb.org

American Association of Colleges of Nursing (AACN)
http://www.aacn.nche.edu

American Association of Eye and Ear Hospitals (AAEEH)
http://www.aaeeh.org

American Association of Healthcare Administrative Management (AAHAM) [patient accounts, billing, admission, registration]
http://www.aaham.org

American Association of Healthcare Consultants (AAHC)
http://www.aahc.net

American Association of Homes and Services for the Aging (AAHSA) [nursing homes, long term care, retirement communities, assisted living]
http://www.aahsa.org

American Association of Hospital Dentists (AAHD)
http://www.scdonline.org/AAHD_Index.htm

American Association of Integrated Healthcare Delivery Systems (AAIHDS)
http://www.aaihds.org

American Association of Medical Assistants (AAMA)
http://www.aama-ntl.org

American Association of Medical Billers (AAMB) [insurance claims processing]
http://www.billers.com/aamb

American Association of Poison Control Centers (AAPCC)
http://www.aapcc.org

American Association of Preferred Provider Organizations (AAPPO) [managed care]
http://www.aappo.org

American Association of Tissue Banks (AATB) [transplants]
http://www.aatb.org

American Baptist Homes and Hospitals Association (ABHHA)
http://www.nationalministries.org/mission/abhha

American Bar Association - Health Law Section (ABA)
http://www.abanet.org/health/home.html

American Board of Medical Specialties (ABMS)
http://www.abms.org

American College of Cardiology Administrators (ACCA)
http://www.aameda.org/Specialtygroups/cardiology.html

American College of Contingency Planners (ACCP) [emergency, disaster planning]
http://www.aameda.org/Specialtygroups/ACCP/contingency.html

American College of Health Care Administrators (ACHCA) [long term care]
http://www.achca.org

American College of Healthcare Architects (ACHA)
http://www.healtharchitects.org

American College of Healthcare Executives (ACHE)
http://www.ache.org

American College of Healthcare Information Administrators (ACHIA)
http://www.aameda.org/Specialtygroups/healthcare.html

American College of Legal Medicine (ACLM)
http://www.aclm.org

American College of Managed Care Administrators (ACMCA)
http://www.aameda.org/Specialtygroups/managedcare.html

American College of Medical Practice Executives (ACMPE) [standards, certification, physician groups]
http://www.mgma.com/acmpe/index.cfm

American College of Medical Quality (ACMQ)
http://www.acmq.org

American College of Oncology Administrators (ACOA)
http://www.aameda.org/Specialtygroups/oncology.html

American College of Physician Executives (ACPE)
http://www.acpe.org

American College of Surgeons/Commission on Cancer (ACS/COC) [accreditation, standards]
http://www.facs.org/cancer/coc/coc.html

American Correctional Health Services Association (ACHSA) [prisons, jails]
http://www.corrections.com/achsa/index.html

American Health Care Association (AHCA) ) [nursing homes, long term care, subacute care, assisted living]
http://www.ahca.org

American Health Information Management Association (AHIMA) ) [medical records, coding]
http://www.ahima.org

American Health Insurance Plans (AHIP) [formerly American Association of Health Plans (AAHP) and Health Insurance Association of America (HIAA)] [managed care, HMOs, PPOs]
http://www.ahip.net

American Health Lawyers Association [formed by merger of American Academy of Healthcare Attorneys and National Health Lawyers Association]
http://www.healthlawyers.org

American Health Planning Association (AHPA) [certificate of need]
http://www.ahpanet.org

American Health Quality Association (AHQA) [quality improvement organizations (QIO), peer review organizations (PRO)]
http://www.ahqa.org

American Healthcare Radiology Administrators (AHRA)
http://www.ahraonline.org

American Heart Association
http://www.americanheart.org/

American Institute of Architects/Academy of Architecture for Health (AIA/AAH)
http://www.aia.org/aah_default

American Managed Behavioral Healthcare Association (AMBHA)
http://www.ambha.org

American Medical Association (AMA)
http://www.ama-assn.org

American Medical Billing Association (AMBA) [insurance claims processing]
http://www.webcom.com/medical/AMBA.htm

American Medical Directors Association (AMDA)
http://www.amda.com/

American Medical Group Association (AMGA)
http://www.amga.org

American Medical Informatics Association (AMIA)
http://www.amia.org/

American Medical Rehabilitation Providers Association (AMRPA)
http://www.amrpa.org

American Medical Resources Foundation (AMRF) [equipment donations for developing countries, international]
http://www.amrf.com

American National Standards Institute - Healthcare Informatics Standards Board (ANSI HISB)
http://web.ansi.org/rooms/room_41/

American Nurses Association (ANA)
http://www.ana.org

American Osteopathic Association (AOA)
http://www.aoa-net.org

American Public Health Association (APHA)
http://www.apha.org

American School Health Association (ASHA)
http://www.ashaweb.org

American Seniors Housing Association (ASHA) [retirement housing]
http://www.seniorshousing.org

American Society for Healthcare Food Service Administration (ASHFSA)
http://www.ashfsa.org

American Society for Quality - Health Care Division (ASQ)
http://www.asq.org/healthcare

American Society for Testing and Materials - Committee E31 on Healthcare Informatics (ASTM)
http://www.astm.org/cgi-bin/SoftCart.exe/COMMIT/COMMITTEE/E31.htm?L+mystore+kkmt1847+986952619

American Society of Health-System Pharmacists (ASHP)
http://www.ashp.org

American Society of Healthcare Publication Editors (ASHPE)
http://www.ashpe.org

American Society of Law, Medicine & Ethics (ASLME)
http://www.aslme.org

American Society of Safety Engineers/Healthcare Practice Specialty (ASSE)
http://www.asse.org/dheal.htm

American Surgical Hospital Association (ASHA)
http://www.surgicalhospital.org

American Telemedicine Association (ATA)
http://www.atmeda.org

Anesthesia Patient Safety Foundation (APSF)
http://www.apsf.org

Assisted Living Federation of America (ALFA)
http://www.alfa.org

Association for Accreditation of Human Research Protection Programs (AAHRPP) [clinical trials]
http://www.aahrpp.org

Association for Ambulatory Behavioral Healthcare (AABH) [formerly American Association for Partial Hospitalization (AAPH)]
http://www.aabh.org

Association for Benchmarking Health Care (ABHC) [incorporates Health Care Benchmarking Association (HCBA)]
http://www.abhc.org/

Association for Clinicians for the Underserved (ACU) [uninsured, access, poor]
http://www.clinicians.org

Association for Electronic Health Care Transactions (AFEHCT) [e-commerce, internet, information systems]
http://www.afehct.org

Association for Health Center Affiliated Health Plans (AHCAHP) [managed care, Medicaid, SCHIP, community health centers]
http://www.ahcahp.org

Association for Healthcare Philanthropy (AHP) [fund raising, foundations]
http://www.ahp.org

Association for Hispanic Healthcare Executives (AHHE)
http://www.ahhe.org

Association for Hospital Medical Education (AHME)
http://www.ahme.org

Association for Professionals in Infection Control and Epidemiology (APIC)
http://www.apic.org

Association for Worksite Health Promotion (AWHP)
http://www.awhp.org

Association for the Advancement of Medical Instrumentation (AAMI) [equipment]
http://www.aami.org

Association of Academic Health Centers (AAHC)
https://www.aahcdc.org

Association of Air Medical Services (AAMS) [patient transportation]
http://www.aams.org

Association of American Medical Colleges (AAMC)
http://www.aamc.org

Association of Behavioral Healthcare Management (ABHM)
http://www.nccbh.org/abhm

Association of Cancer Executives (ACE)
http://www.cancerexecutives.org/

Association of Clinical Research Organizations (ACRO)
http://www.acrohealth.org.

Association of Community Cancer Centers (ACCC)
http://www.accc-cancer.org/

Association of Freestanding Radiation Oncology Centers (AFROC) [cancer therapy]
http://www.afroc.org

Association of Health Care Journalists (AHCJ) [media, news]
http://www.ahcj.umn.edu

Association of Health Information Outsourcing Services (AHIOS) [medical records, coding, transcription]
http://www.ahios.org

Association of Healthcare Internal Auditors (AHIA) [financial management]
http://www.ahia.org

Association of Healthcare Value Analysis Professionals (AHVAP) [materials management, evidence-based, purchasing, assessment, equipment, supplies]
http://www.ahvap.org

Association of Maternal and Child Health Programs (AMCHP) [state directors]
http://amchp1.org

Association of Medical Device Reprocessors (AMDR) [equipment and supplies, third-party reprocessors]
http://www.amdr.org

Association of Medical Directors of Information Systems [AMDIS]
http://www.amdis.org

Association of Organ Procurement Organizations (AOPO) [transplants]
http://www.aopo.org

Association of Professional Chaplains (APC)
http://www.professionalchaplains.org

Association of Program Directors in Vascular Surgery (APDVS) [cardiovascular]
http://apdvs.vascularweb.org

Association of Public Health Laboratories (APHL)
http://www.aphl.org

Association of Staff Physician Recruiters (ASPR)
http://www.aspr.org

Association of State and Territorial Directors of Health Promotion and Public Health Education (ASTDHPPHE)
http://www.astdhpphe.org

Association of State and Territorial Health Officials (ASTHO)
http://www.astho.org

Association of Telehealth Service Providers [telemedicine]
http://www.atsp.org

Association of University Programs in Health Administration (AUPHA)
http://www.aupha.org

Australian Healthcare Association (AHA)
http://www.aha.asn.au

Best Practice Network [quality]
http://www.best4health.org

Biotechnology Industry Organization (BIO)
http://www.bio.org

Blue Cross and Blue Shield Association (BCBSA)
http://www.bcbshealthissues.com

Blue Cross and Blue Shield Association (BCBSA)
http://www.bluecares.com

Bridges to Excellence [quality]
http://www.bridgestoexcellence.org