Lidov Hart

Lidov Hart, a sole proprietorship based in Boston, Massachusetts, provides expert witness and medical expert services to the Department of Health and Human Services and the Department of Justice as a prime contractor, operating exclusively in full-and-open competition with no small business set-aside designation on its most recent award, though prior work carried Total Small Business set-aside status.

Lidov Hart's federal footprint is narrow and specialized. The vendor has received 45 awards across approximately fifteen years, with a combined potential value of $990 thousand and $174 thousand in obligated dollars (18% of potential value). The customer base consists almost entirely of HHS Health Resources and Services Administration, which accounts for 44 awards and $965 thousand of combined potential value. A single Department of Justice Civil Division purchase order for $24,375, awarded February 27, 2026, represents the only non-HHS work in the source data. HHS work centers on the Vaccine Injury Compensation Program (VICP), where Lidov Hart provides medical expert case review and analysis to support adjudication of vaccine injury claims. The DOJ award covers expert witness and litigative case support services on a Time and Materials basis, with performance through February 26, 2029.

Lidov Hart's work flows through HHS BPAs rather than broader government-wide vehicles. The four highest-activity parent BPAs collectively account for 40 task orders and $168 thousand in combined potential value: BPA HHSH250201000063B (20 task orders, $58 thousand), BPA 75R60219A00031 (9 task orders, $38 thousand), BPA 75R60221A00001 (6 task orders, $42 thousand), and BPA HHSH250201400045B (5 task orders, $30 thousand). All 45 awards fall under PSC Support-Professional: Expert Witness, with 44 classified under NAICS Offices of Physicians (except Mental Health Specialists).

Activity has declined significantly. The vendor received four awards in 2019 and seven in 2020, dropped to four in 2021 and three in 2022, and shows only one award recorded in 2026 to date. The most recent obligated dollars are concentrated in the 2021–2022 period; recent awards carry smaller individual values and longer completion horizons, suggesting either reduced volume or a shift toward smaller task orders. No subcontract work appears in the source data.