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Key OSI Employees

Please contact the following individuals for information regarding the services listed:

Nick Rinaldi, MA

President, Senior Health Physicist
E-mail: nick at occserv dot com
Direct: (619) 252-2211

Health Physics
Unknown Radionuclides Identification
Radiation Instrument Calibration Services

V. Chad Hansen, MS, CIH, CSP, CPE

Vice President, Director of EH&S Services
E-mail: chad at occserv dot com
Direct: (619) 708-8130

Environmental Health & Safety
Industrial Hygiene
Regulatory Compliance

Kaleb James

Chief Financial Officer
E-mail: kaleb at occserv dot com
Direct: (858) 558-6736

Accounting Management
Human Resources
Information Technologies


For questions, comments or concerns regarding this website, please contact Kaleb James at kaleb at occserv dot com.