Skip to main content
NIH Logo NIH Logo

Office of Research Services

Serving the NIH Community

Contact Us

​​​​​​​​​​NIH Campus

During normal work hours (7 AM - 5 PM), dial (301) 496-5774

For information regarding Radioactive Shipments dial 301-496-3277

For clinical center emergencies call the Page Operator at 301-496-1211 and ask for Radiation Safety assistance​

After Hours:​

For all after-hours emergencies, dial 911 or contact the NIH Division of Police at (301) 496-5685 and request Radiation Safety help.​​


Satellite Buildings (except IRF in Frederick)

During normal work hours (7 AM - 5 PM), dial (301) 496-5774

For fire or serious injury during normal work hours, dial 9-911​

After Hours:

For all after-hours emergencies, dial 9-911 or contact the NIH Division of Police at (301) 496-5685 and request Radiation Safety help.​​


IRF in Frederick

During normal work hours (7:30 AM - 4:30 PM), dial (301) 631-7226 or (301) 496-5774

For fire or serious injury dial 9-911​

After Hours:

Call the NIH Emergency Call Center at (301) 496-5685 and request Radiation Safety assistance

For all after-hours emergencies, dial 9-911 or contact the NIH Division of Police at (301) 496-5685 and request Radiation Safety help.​​​


Radiation Safety Program Contacts

  • Main Phone Number – 301-496-5774

  • Radioactive Waste Service – 301-496-4451

  • Radioactive Packages/Shipment Office – 301-496-3277

  • Radiation Safety Training Office – 301-496-2255

  • Radiation Safety Committee Executive Secretary – 301-496-2253

  • Radiation Safety Office at IRF Frederick – 301-631-7226

  • DS Fax – 301-496-3544 or 301-480-9708


Additional Contacts

  • Chemical Waste – 301-496-4710

  • Division of Safety Main – 301-496-2960

  • NIH Directory Assistance – 301-496-4000



Contact Information

​Division of Radiation Safety

​​​National Institutes of Health
Office of Research Services
9000 Rockville Pike, Building 21
Bethesda, MD 20892
Phone: (301) 496-5774
E-mail: RadiationSafety@mail.nih.gov​ ​

Hours of Operation

Monday - Friday, 7:00 A.M. to 5:00 P.M.

After-hours/weekends: Call NIH Emergency

Communications Center: ​(301) 496-5685

For more information contact

Main: (301) 496-5774

Training: (301) 496-2255

Rad Waste Pickup: (301) 496-4451

Radioactive Shipping & Recieving: (301) 496-3277