OcchNet Ltd.  
   Assists occupational health, safety, and hygiene providers implement practical health & safety solutions, reduce risk, and improve compliance.
   http://www.ldb.co.uk/healthandsafety.htm

O'Connor Health Care Consulting  
   Offers health care consulting, marketing communications and policy analysis services to healthcare industry, insurance and consumer advocacy clients.
   http://www.oconnorhealthanalyst.com/

Operating Room Management Consultants  
   Provides operational management, program development, utilization analysis, and staffing support to reduce operating room costs and increase productivity.
   http://www.operatingroomconsultant.com/

OB-GYN Consulting  
   Consulting services for physicians, pharmaceutical organizations, and medical device companies. Programs include advice on clinical trials, expert trial testimony and malpractice claims review, practice management, and business consultation.
   http://www.obgynconsulting.com

Oxford Health Consulting  
   Specializes in applying research evidence to health practice.
   http://www.oxfordhealth.co.uk/

Optimal Insights  
   Assists health care organizations in the utilization of networking technology to deliver services by sending medical information securely over the Internet.
   http://www.optimalinsights.com/

Orton  
   Evaluates feasibility of technological applications for rehabilitation medicine; site includes links to relevant research resources.
   http://www.orton.fi/

Oncology Associates  
   Provides consulting assistance to community and academic hospital cancer programs; services include identifying service gaps,coordinating fragmented service, and facilitating joint physician/hospital and multi-hospital cancer care operations.
   http://www.oncologyassociatesinc.com/

Ofstead Insights  
   Provides support in clinical and marketing communications to healthcare organizations; services include expert analysis, research, customized seminars, and relevant publications.
   http://www.ofsteadinsights.com

Oncology Management Consulting Group  
   Provides consulting and operational oncology mananagement support to health care providers; services include billing and coding review, financial assessment, mentoring, leadership training, interim management services, and educational programs.
   http://oncologymgmt.com