Michael B Phillips

Michael B Phillips, doing business as Ontario Prosthetic Systems, is a manufacturer and fabricator of custom prosthetic devices serving the Department of Veterans Affairs as a prime contractor, competing full-and-open with no set-aside designation. The company is a minority-owned, Hispanic American-owned sole proprietorship based in Rancho Cucamonga, California, operating under primary NAICS 339113 (Surgical Appliance and Supplies Manufacturing) with a twenty-year federal contract history spanning 118 awards since 2006.

Ontario Prosthetic Systems maintains extreme customer concentration within the VA health system. The top customer, Department of Veterans Affairs Veterans Health Administration Veterans Integrated Service Network 22 (VISN 22), accounts for 106 of 118 awards (91% coverage) and $58 million of the $58.6 million combined potential value across the vendor's entire footprint. VISN 22 serves Southern California, the vendor's home region. The vendor operates under three indefinite delivery contracts issued by the VA: VA26216D0020 (33 task orders, $580 thousand combined potential value), VA262PC0827 (29 task orders, $396 thousand combined potential value), and VA600PC0048 (1 task order, $22 thousand combined potential value). Recent representative awards include a $43.6 thousand firm fixed-price purchase order from VISN 22 on March 2, 2026, for prosthetic devices; a $32.9 thousand purchase order on January 26, 2026, for prosthetic artificial limbs; and a $48.6 thousand order on August 5, 2025, for above-knee prostheses. All orders specify performance in Rancho Cucamonga, California and support the VA's Prosthetic and Sensory Aids Service program.

Ontario Prosthetic Systems' capability scope centers on the design, fabrication, repair, and installation of lower-limb and upper-limb prosthetic devices, including below-knee prostheses, above-knee prostheses, backup prosthetic legs, and advanced microprocessor-controlled knee components. Award activity has declined over the past five years — five awards in 2022 declining to two awards in 2026 — with only three awards placed in 2025. The vendor operates as a 100% prime contractor with no subcontract work. The vendor does not participate in any government-wide acquisition contracts, multiple-award schedules, or cross-agency IDIQs; all awards flow directly through VA regional purchase orders.

Prosthetics