This Sources Sought announcement is preliminary and seeks information only; the VA NCO 21 is assessing contractor capability to provide Diagnostic Medical Physics services for the VA Central California Health Care System. A draft Statement of Work is attached, and the period of performance is March 1, 2027 through February 29, 2028, with possible options/ordering periods. The applicable NAICS code is 541690 (Other Scientific and Technical Consulting Services) with a $19 million small-business size standard. Requested information includes socioeconomic status, SAM UEI and legal name, similar projects, diagnostic medical physics certifications, anticipated teaming/subcontracting, any GSA contract number, and completion of the attached price schedule; failure to provide the requested items may be considered non-responsive. The government will use the information to determine its procurement strategy/business-type decision and will not pay for submitted information.