Midwest Special Instruments Corp

Midwest Special Instruments Corp, a for-profit Subchapter S corporation based in Prior Lake, Minnesota, manufactures and distributes audiology and vestibular testing equipment to the federal healthcare system as a prime contractor operating exclusively in full-and-open and small-business set-aside procurements — no subcontracting footprint and no participation in government-wide vehicles or GSA Schedules beyond a single-award VA indefinite-delivery contract for maintenance services.

The vendor's customer concentration is extreme. The Department of Veterans Affairs Veterans Integrated Service Network 23 (VISN 23) accounts for 22 of 30 awards (100% coverage across top customers by count and potential value), representing $1.8 million in combined potential value. The Indian Health Service places four awards worth $66 thousand, and the VA's main office carries two awards valued at $432 thousand. Exposure to the Coast Guard and South Dakota Army National Guard is incidental. This VISN 23 dependence is characteristic: nearly all work supports audiology and vestibular diagnostic equipment at VA medical centers across Iowa, Nebraska, North Dakota, and South Dakota.

Midwest Special Instruments' capability portfolio centers on distribution, calibration, repair, and installation of specialized audiology equipment. Representative prime work includes a $287.8 thousand purchase order from VISN 23 for a vestibular testing system (May 2024); a $259.6 thousand order for nineteen Interacoustics Titan V4 tympanometers with diagnostic add-ons at the Minneapolis VA Medical Center (August 2022); a $117.5 thousand purchase order for an Orion Rotary Chair system with integrated VNG and caloric testing equipment at the Nebraska-Western Iowa VA Healthcare System (July 2025); and a $105.3 thousand order for audiology equipment repair and sound-room certification across VISN 23 facilities, awarded July 2024 and running through July 2029. The vendor operates as a sole-source or authorized distributor for equipment brands including Interacoustics, GSI, Audioscan, and Micromedical; several awards cite 41 U.S.C. 3304(a)(1) justification for noncompetitive procurement based on vendor exclusivity or single-manufacturer authority.

Recent activity is flat to declining — three awards in 2025 and two in 2026 — with three awards (combined potential value $185 thousand) reaching completion within the next twenty-four months. In August 2025, Midwest Special Instruments secured a single-award indefinite-delivery contract with VISN 23 valued at $378 thousand through July 2030 for audiology equipment calibrations, maintenance, and support across VA medical centers in the four-state region. A $54.4 thousand delivery order under this IDIQ was issued the same day. Primary NAICS coding aligns with electromedical apparatus manufacturing (9 awards) and surgical instrument manufacturing (6 awards), with PSC codes concentrated in medical and surgical instruments and equipment (19 awards) and maintenance and repair of medical equipment (7 awards).