We've compiled this serendipitous list of searchable databases to provide you with access to even more authoritative health and medical information.

1. American Hospital Directory
2. American College of Surgeons Approved Hospital Search
3. CancerLit - Bibliographic database containing more than a million citations and abstracts related to cancer from over 4,000 different sources.
4. CenterWatch.com - Clinical Trials Listing Service.
5. Centre for Reviews and Dissemination
6. CiteHealth - Reports on United States health care providers including hospitals, nursing homes, dialysis centers, rehab centers, and more.
7. Citeline  Citeline provides the world’s most comprehensive real-time R&D intelligence to the pharmaceutical industry, covering global clinical trial, investigator and drug intelligence. Our data is drawn from over 20,000 unique sources and analysed by the industry’s largest team – over 250 full-time expert analysts and editors.
8. Cure Research - Symptoms, diagnosis and treatment information including a database of statistics and cross-referenced medical information.
9. Diseases Database - Cross-referenced database of clinical medicine to provide links to topic-specific pages from other websites.
10. Doctor Directory
11. Doctor's Guide
12. DynaMed - A medical information database with over 2,000 diseases.
13. EU Health - Online database giving access to information and documents on health plans and initiatives within the European union.
14. Family Practice Notebook - A compendium of notes on approaches to common problems seen in family practice with supporting references.
15. General Practice Notebook - Database of clinical medicine with a search facility. (United Kingdom)
16. Geriatrics
17. Health on the Net Database
18. HealthLine.com - Consumer oriented medical search engine with Health Channels
19. Healthopedia
20. IndMED: Indian Biomedical Journals Database - Bibliographic aggregation of peer-reviewed biomedical journals.
21. Jeghers Medical Index - The Jeghers Medical Index is a glimpse of early to mid twentieth century medicine as seen through the literature collected by Harold J. Jeghers, M.D., a noted twentieth century American physician. Browse this one of a kind collection.
22. Journal Watch
23. Medical Consent Forms - A searchable online database by commercial subscription consisting of forms for clinicians for CPT4-coded procedures as well as for medications.
24. MediLexicon - Dictionary of medical and pharmaceutical acronyms, abbreviations and terms.
25. MedlinePlus Drug Information - Guide to prescription and over-the-counter medications provided by the United States Pharmacopeia.
26. Mediscan Image Search
27. Medicare.gov
28. Merck Manual
29. Merck Manual - Home Edition
30. Merck Manual of Geriatrics
31. NCI Screening Data 3D Miner: Cancer - A tool for interactive analysis and visualization of the National Cancer Institute anti-tumor datasets. Contains 41,000 chemical compounds versus 155 cancer cell lines.
32. New Medicine: OncologyKnowledgeBase - Database which includes new technologies and products in development against cancer. This is a subscription-based product.
33. Intute (Old OMNI) - Searchable catalog of select evaluated health and medicine Internet resources.
34. Online Mendelian Inheritance in Man - Catalog of human genes and genetic disorders authored and edited by Dr. Victor A. McKusick and his colleagues at Johns Hopkins University and elsewhere.
35. Research resources for Evidence Based Nursing - Evaluated nursing research resources, links to online nursing databases, guidelines, statistics, and full text resources.
36. Search-22/Health
37. Web4Health.info - Free medical advice on mental health, psychology, personality disorders, relationships, stress, anxiety, depression, emotional abuse, substance abuse, sexual abuse, types of mental illness, etc.