Ghosh, Partha Sekhar

Ghosh, Partha Sekhar, a Boston-based sole proprietorship, provides medical expert witness and case review services to the federal government as a prime contractor under small-business set-asides and full-and-open vehicles, with work concentrated in support of litigation and healthcare-related investigations across the Department of Health and Human Services and the Department of Justice. The vendor operates without designated SBA certifications (8(a), HUBZone, SDVOSB, or WOSB) but competes under Total Small Business set-asides on nearly all work and holds a single-award Blanket Purchase Agreement with HRSA.

Ghosh's capability portfolio centers narrowly on medical expert witness testimony and case review services. The vendor derives approximately 98% of combined potential value from the Department of Health and Human Services Health Resources and Services Administration, which in August 2024 awarded a single-award BPA valued at $7.5 million running through August 13, 2029 for medical expert services supporting the National Vaccine Injury Compensation Program (VICP). Work under this BPA involves individual case reviews and expert testimony on vaccine injury claims; representative task orders include a $18,750 BPA call issued July 27, 2026 for VICP medical case review, a $15,000 call from December 16, 2024, and a $6,000 call from June 3, 2025. The vendor also performs expert witness services for the Department of Justice Civil Division under full-and-open purchase orders (no set-aside), including a $16,872 time-and-materials order from May 20, 2024 and a $13,202 purchase order from December 11, 2023, both running through 2026 or 2027. These DOJ engagements focus on civil litigation support and healthcare fraud recovery activities.

Customer concentration is absolute: HRSA accounts for 15 awards totaling $7.8 million of the $7.9 million combined potential value across all federal work; DOJ Civil Division places the remaining three awards worth $38,000. The vendor operates under two parent BPAs (both internally managed and not government-wide vehicles): BPA 75R60218A00025 with nine task orders and BPA 75R60224A00027 with four task orders. Activity has declined materially — four awards in 2022 and 2024, but only one award in 2025 and one in 2026 — and only three awards with combined potential value of $49,000 reach ultimate completion in the next twenty-four months, presenting minimal recompete exposure relative to the $7.5 million IDV ceiling. The vendor operates as a prime on 100% of awards with no subcontract footprint. Primary NAICS coding reflects the specialist profile: 16 of 18 awards fall under Offices of Physicians (except Mental Health Specialists), and PSC coding shows 17 of 18 awards under Support–Professional: Expert Witness.