Payne Health Physics Corp

Payne Health Physics Corp, operating as sole proprietor Samuel L. Payne, delivers radiation physics consulting and clinical support services exclusively to the Department of Veterans Affairs as a prime contractor under full-and-open and Total Small Business set-aside designations. The company is based in Northumberland, Pennsylvania, and operates from Wilkes-Barre, supporting radiation oncology programs across VHA facilities in Pennsylvania and West Virginia.

Payne Health Physics operates a highly concentrated, single-customer footprint. The Department of Veterans Affairs Veterans Integrated Service Network 4 represents 100% of recent awards — all 22 prime awards, totaling $912 thousand in combined potential value, with $431 thousand obligated to date (47% of the ceiling). The vendor delivers radiation physicist services on firm fixed-price delivery orders and purchase orders; recent representative work includes a $75,160 delivery order awarded June 20, 2026, for radiation physicist services (ultimate completion June 19, 2027), a $51,965 purchase order for emergency radiation physicist services awarded June 20, 2025, and a $37,804 delivery order under Total Small Business set-aside awarded June 20, 2024. Work is categorized primarily under NAICS 541712 (Other Scientific and Technical Consulting Services) and PSC codes for professional support and equipment testing services.

The vendor holds multiple indefinite delivery contracts with VISN 4. The top vehicles are Indefinite Delivery Contract VA24412D0525 (6 task orders, $191 thousand combined potential value), Indefinite Delivery Contract 36C24420D0014 (5 task orders, $174 thousand), Indefinite Delivery Contract 36C24418D0134 (2 task orders, $18 thousand), and Indefinite Delivery Contract 36C24419D0055 (2 task orders, $18 thousand). Activity remains steady at one award per year from 2021 through 2026, with one award (combined potential value $75 thousand) reaching ultimate completion within the next twenty-four months. Payne Health Physics maintains no subcontract footprint and competes exclusively under the single VISN 4 customer relationship.