Doctorpage.com
Simply the best web resource for finding a doctor, or for doctors looking to establish (or improve)their practice's web presence. Find a doctor by location, specialty, etc. Web presence for doctors

Health Communication Network
Health Communication Network provides fast, high-quality electronic mail and Internet access for health professionals and practitioners as well as the latest comprehensive quality health information.

Interpsych
An international, interdisciplinary, internet-based consortium of forums for the discussion of professional issues in mental health.
InVisionet
InVisionet is the largest and fastest growing Internet search index and reference source for healthcare professionals who actively buy, sell, and service medical equipment.

KR ScienceBase(SM)
KR ScienceBase(SM) provides a new approach to intelligent internet search assistance for scientific professionals.

LabFocus
LabFocus is an internet service dedicated to linking laboratory professionals to information from industry, government, and medical societies.

Podiatry Online
Podiatry Online is the PREMIERE Online Service for Podiatrists and others interested in foot health. Services include Practice Opportunities Classified, Office Equipment Exchange, a Comprehensive List of Podiatry and Medical Resources on the Web as well as reviews of the best sites. An Online Clinical Podiatry NetForum is a discussion group that hosts lively clinical and practice management discussions.

Sonoquest Software
Sonoquest Software provides medical sonography, vascular technology and radiology review pc software.