| Medical Radiation Physics | | A resource for professional medical physicists, including standards of practice, regulatory guidance, and educational opportunities. |
| NeuroPhysics | | NeuroPhysics Corporation is a medical/R&D company specializing in NeuroSPECT imaging techniques and equipment, as well as other non-invasive in-vivo monitoring devices |
| NIU Institute for Neutron Therapy | | A unique and proven type of radiation, neutron therapy blends advanced medical science with cutting-edge accelerator physics developed at Fermi National Accelerator Laboratory. |
| Numerical dosimetry | | National Physical Laboratory, Ionising Radiation Group: Numerical Dosimetry including Monte Carlo EGS simulation examples using VRML. |
| Open Medphys | | A website to promote the use of Open Source technology and freedom of exchange of information within the Medical Physics profession. |
| Physics Consultants Inc | | Physics Consultants, Inc, a privately owned company based in Portland, Maine, is the largest physics consulting group in Northern New England and has provided consulting services for over 25 years. |
| ProPhysics Innovations, Inc. | | ProPhysics Innovations, Inc. (PPI) provides a broad range of physics solutions in medicine, research, academia and industry. |
| West Physics Consulting | | Provider of medical and health physics consulting services and ACR accreditation assistance throughout the United States. | |
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