AMA Physician Select
   Provides information on member physicians in the United States.
   http://www.ama-assn.org/aps/amahg.htm

Active Health Management
   Resources and healthcare provider locator.
   http://www.activehealth.ca

American doctor referral network
   Physician directory and referral service online.
   http://www.americandoctorreferral.net

Board Certified Physicians in Ambulatory Medicine
   About the American Academy of Ambulatory Medicine and the American Board of Ambulatory Medicine. Offers the ability to locate an ambulatory medicine physician by name, state, certification, practice or specialty.
   http://www.ambulatorymedicine.org

Directory of Physician Groups and Networks
   Searchable directory of physician, healthcare and medical groups in the United States.
   http://www.dpgn.com/

DocFinder
   A health professional licensing database provided by the Association of State Medical Board Executive Directors and Administrators in Medicine. Find doctors and other healthcare providers in your area.
   http://www.docboard.org/

Doctordirectory.com
   Searchable database of over 600,000 physicians, with information including practice name, specialties, office hours, and contact information.
   http://www.doctordirectory.com

Doctorpage.com
   Directory of doctors and physicians websites.
   http://www.doctorpage.com

Doctors Infoseek
   Search for doctors, dentists, pharmacies and hospitals.
   http://www.doctorsinfoseek.com/

Filipino Physicians Database
   Information on Filipino doctors worldwide.
   http://doktorko.com

Indian Doctors Directory
   A large database of Indian doctors. Search based on name, speciality, city, state and pincode.
   http://www.medindia.net/patients/doctor_search/dr_find.asp

Investigate Your Doctor
   Find educational background, disciplinary history and malpractice, states in which a physician is licensed to practice or held a license, honors and specialty certificates.
   http://www.investigateyourdoctor.com

MediGuide
   An on-line directory of hospitals and physicians available all over the world in 16 languages. Services help both referring physicians and consumers.
   http://www.mediguide.com

Medical Pages
   Directory listing UK health sites, hospitals, GP practices, specialist sites, support groups, medical and health products.
   http://www.medicalpages.co.uk

Medicare Participating Physician Directory
   Contains information on participating doctors who have agreed to accept assignment on all Medicare claims and covered services.
   http://www.medicare.gov/Physician/Home.asp

National Practitioner Data Bank
   Central repository of information on doctors, dentists, and other healthcare providers. Contains reports on malpractice payments and other adverse actions.
   http://www.npdb-hipdb.com/

Physician Directory
   A national directory of physicians, doctors, and health care providers.
   http://physician--directory.com

Physician.com
   Links to abstracts of professional journal articles of interest to healthcare professionals. Requires free registration to access full abstracts and topic specific e-mailed updates.
   http://www.physician.com

Search for STS Surgeons
   Information on thoracic and cardiovascular surgeons from members of the Society of Thoracic Surgeons.
   http://www.sts.org/member/sts/

Spine Directory
   Searchable database of neurosurgeons, orthopedic surgeons, pain specialists, physiatrists, and chiropractors in the United States.
   http://www.spine-health.com/find/fi01.html

W2P2 Technologies Corp.
   Offers a search function to locate a doctor by specialty or geographic area.
   http://www.iknowdoctors.com

WebMD: Physician Directory
   Search for a doctor in the United States, by name, location or specialty.
   http://doctor.webmd.com/physician_finder/