# Notice of Intent to Sole Source - Clinical Research Support Services for NIEHS – Contract HHSN273201600002I – Extension of Ordering Period for IDIQ Contract

Canonical: https://abierto.us/opportunities/hhsn273201600002i

- Solicitation number: HHSN273201600002I
- Notice type: Special notice
- Status: Awarded to Social & Scientific Systems, Inc.
- Department: Department of Health and Human Services
- Agency: National Institutes of Health
- Contracting office: National Institutes of Health Nichd (75N940)
- NAICS: 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- Product or service code: AJ11 General Science And Technology R&D Services; General Science And Technology; Basic Research
- Place of performance: Silver Spring, Maryland
- County: Montgomery County (FIPS 24031). https://abierto.us/counties/montgomery-county-md-24031
- City: Silver Spring. https://abierto.us/cities/silver-spring-md-2472450
- First posted: March 4, 2026
- Last posted: March 4, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/c39347ea7969408ebd4b12d4bdd9c9cc/view

## Description

THIS IS A NOTICE OF INTENT TO AWARD A SOLE SOURCE CONTRACT MODIFICATION WITHOUT PROVIDING FOR FULL AND OPEN COMPETITION. THIS IS NOT A SOLICITATION OR A REQUEST FOR COMPETITIVE PROPOSALS.

The purpose of this announcement is for the Clinical Research Support Services for NIEHS, within the National Institute of Environmental Health Services (NIEHS), National Institutes of Health, to issue a modification to the existing Indefinite Delivery, Indefinite Quantity (IDIQ) contract number HHSN273201600002I on a sole source basis.

The objective of this modification is to extend the ordering period to ensure continuity of mission-critical research while the NIH procurement team continues acquisition planning for the re-competition of these services. Please see attached notice.

## Award on USAspending

- Recipient: Social & Scientific Systems, Inc. (UEI XKMBEM2BTLK3)
- Contract: HHSN273201600002I
- Obligated: $0.00
- Competition: Full and Open Competition, 3 offers received
- Link: solicitation number HHSN273201600002I was reused as the contract number; same sub-agency 7529 (high confidence)
- Record: https://www.usaspending.gov/award/CONT_IDV_HHSN273201600002I_7529/


## Publications

- March 4, 2026: Special notice, due March 19, 2026 at 4:00 PM EDT. Notice c39347ea7969408ebd4b12d4bdd9c9cc. https://sam.gov/workspace/contract/opp/c39347ea7969408ebd4b12d4bdd9c9cc/view

## Points of contact

- BANK, SARAH N, sarah.bank@nih.gov
- SCHAUPP, LISA L, lisa.schaupp@nih.gov

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Source: SAM.gov Contract Opportunities bulk extract and USAspending.gov award data. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/hhsn273201600002i.