Foss Therapy Services, Inc.

Foss Therapy Services, Inc., a for-profit Subchapter S Corporation based in North Hollywood, California, manufactures and maintains irradiator equipment and provides radioactive source reload services to federal research, disease prevention, and pest control programs as a prime contractor across a small-customer set of civilian and defense agencies. The company operates entirely as a prime (100% of recent awards) and competes predominantly under small-business set-asides; of the 44 total awards in the portfolio, 24 carry Total Small Business designations, while the remainder are full-and-open or carry no set-aside.

Foss Therapy's capability portfolio centers on Cobalt-60 irradiator manufacture, maintenance, repair, and radioactive source reloading. The company holds exclusive Nuclear Regulatory Commission and California Radiologic Health Branch authorization to perform cobalt-60 source reloading on specific equipment models, including the JL-Shepard Model 484F-C, and manufactures irradiator equipment. Representative work includes a $1.237 million definitive contract with CDC Pittsburgh (awarded September 2022, running through September 2027) for preventative maintenance and reload services on a GammaCell irradiator; an $881,736 small-business purchase order from USDA's Veterinary Services (June 2023) for equipment delivery to the National Veterinary Services Laboratories; a $780,700 small-business award from the Army's Materiel Command at Aberdeen Proving Ground (August 2022) for removal and installation of 6,500 curie cobalt-60 sources; and a $1.095 million sole-source small-business purchase order from USDA APHIS (September 2026) for cobalt-60 reload services at the Phoenix Rearing Facility. Most recent work sits across preventative maintenance contracts, equipment replacement, and source-reload operations.

Customer concentration is split between defense and civilian users. DOD's Uniformed Services University of the Health Sciences dominates by award count with 21 awards totaling $2.4 million in combined potential value, anchored by recurring blanket purchase agreement calls for equipment maintenance services on express car fleets (no set-aside) at the Bethesda, Maryland campus. CDC Pittsburgh anchors potential value with 6 awards worth $3.4 million combined. USDA APHIS splits across two program offices: Plant Protection and Quarantine (8 awards, $257 thousand) and Marketing and Regulatory Programs Business Services (3 awards, $1.1 million). The Department of the Army and other civilian agencies account for the remainder. Top customers by award count and potential value rankings diverge slightly — CDC's larger-value contracts (definitive agreements in the $1+ million range) outpace USUHS by dollars despite USUHS's volume advantage through smaller maintenance calls.

Foss Therapy sits on one named parent vehicle: the Uniformed Services University of the Health Sciences Blanket Purchase Agreement HU000116AJV12, from which it has placed 15 task orders valued at $395 thousand combined. The company does not hold positions on government-wide acquisition contracts or other multi-agency IDIQs; its work flows through direct purchase orders and agency-specific BPAs.

Activity has declined over the past five years, from five awards in 2022 to one in 2025 and two in 2026 (most recent award September 2026). The combined potential value of awards completing in the next twenty-four months is $2.3 million across two contracts (a CDC maintenance agreement and the recent USDA reload order), representing modest recompete exposure. The vendor holds no subcontract footprint; all 44 awards are prime contracts. Foss Therapy's category footprint aligns tightly with its core business: 26 awards fall under NAICS 811213 (Other Electronic and Precision Equipment Repair and Maintenance), 16 under NAICS 333992 (Irradiation Apparatus Manufacturing), and the remainder under related repair and equipment codes.