ON SITE SYSTEMS INC (MO)
Registration and award facts
SAM.gov registration as of
- Net obligations since FY2008
- $905.56K
- $905,564under this UEI
- FY2026 obligations
- $60.01K†
- $60,005Provisional
- Awards and orders
- 35
- with positive net obligations
- Latest action
- Sep 11, 2026
- SAM.gov registration
- Active
- Registration expiration date Jul 14, 2027
Registration
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Business start date
- Sep 1, 1982 (44 years)
- Location
- Saint Louis, MO
- State of incorporation
- Missouri
- Purpose of registration
- All Awards
- Website
- hpassist.com
† FY2026 obligations (provisional; DoD awards signed after Jul 25, 2026 are not yet public).
Contract actions that the Department of Defense both funds and awards are withheld at the source for 90 days, so DoD awards signed after Jul 25, 2026 are not yet public.
Source: SAM.gov entity registration and FPDS contract actions recorded under UEI STLMHDJNX5C7. GovChime does not check exclusions.
Performance
Net obligations recorded under this UEI since FY2008. Top lists show the largest five by share of this vendor's net obligations; the shares do not sum to 100%.
Net obligations by fiscal year of action
- FY2026: $60,005 (provisional)
- FY2025: $91,263
- FY2024: $38,938
- FY2023: $114,638
- FY2022: $23,140
- FY2021: $23,140
- FY2020: $23,140
- FY2019: $88,020
Show all 19 yearsEarlier years (FY2008–FY2018)
- FY2018: $23,695
- FY2017: $50,023
- FY2016: $23,695
- FY2015: $18,801
- FY2014: $35,050
- FY2013: $17,843
- FY2012: $81,580
- FY2011: $55,769
- FY2010: $18,399
- FY2009: $44,919
- FY2008: $73,507
Total across 19 fiscal years: $905,564
Top awarding agencies
- Department of Defense$398,251, 44.0%
- Department of Health and Human Services$282,382, 31.2%
- Department of Veterans Affairs$188,066, 20.8%
- Department of Commerce$36,865, 4.1%
Top awarding sub-agencies
- National Institutes of Health$246,302, 27.2%
- Department of Veterans Affairs$188,066, 20.8%
- Uniformed Services University of the Health Sciences$175,612, 19.4%
- Department of the Army$73,854, 8.2%
- Department of the Navy$70,637, 7.8%
Top NAICS by obligations
- 511210Software publishers$554,482, 61.2%
- 513210Software publishers$212,284, 23.4%
- 339112Surgical and medical instrument manufacturing$17,260, 1.9%
Top product and service codes by obligations
- 7030Information technology software$356,270, 39.3%
- 7A21IT and telecom - business application software (perpetual license software)$204,890, 22.6%
- DH10IT and telecom - platform as a service: database, mainframe, middleware$123,094, 13.6%
- 4940Miscellaneous maintenance and repair shop specialized equipment$60,000, 6.6%
- D319IT and telecom- annual software maintenance service plans$41,568, 4.6%
Capabilities
NAICS codes
- 541511Custom Computer Programming Services(primary)Small
- 513210Software PublishersSmall
Small: small business for that NAICS, self-certified in SAM.gov registration.
SBA certifications
No certification in the SBA profile data.
Federal Capability Statement
Software Development, specializing in Web Based Radioactive material management, Hazardous Chemical Safety, Biological Safety & Protocol Tracking. We also have other Web based Safety programs
Capabilities & Services
Contracts
Latest awards and orders
- 75N96022P00173Purchase orderDepartment of Health and Human ServicesNational Institutes of HealthLatest action
- 1333ND26PNB150375Purchase orderDepartment of CommerceNational Institute of Standards and TechnologyLatest action
- HU000123P0055Purchase orderDepartment of DefenseUniformed Services University of the Health SciencesLatest action
- FA702225P0005Purchase orderDepartment of DefenseDepartment of the Air ForceLatest action
- HHSN273201700125PPurchase orderDepartment of Health and Human ServicesNational Institutes of HealthLatest action
- 75D30119P06969Purchase orderDepartment of Health and Human ServicesCenters for Disease Control and PreventionLatest action
- N0017319P1450Purchase orderDepartment of DefenseDepartment of the NavyLatest action
- HU000116MB034Purchase orderDepartment of DefenseUniformed Services University of the Health SciencesLatest action
- VA25517C0240Definitive contractDepartment of Veterans AffairsLatest action
- HHSN273201600295PPurchase orderDepartment of Health and Human ServicesNational Institutes of HealthLatest action
Contact Info
As of . Source: SAM.gov Points of Contact.
SAM.gov registration for ON SITE SYSTEMS INC lists a physical address and a separate mailing address, along with 5 verified points of contact. Past Performance contacts are the recommended outreach channel for due-diligence references; Government Business contacts handle procurement-facing correspondence.
Source: SAM.gov entity registration. Contacts displaying numeric or placeholder names have been filtered (defense-in-depth).
Physical Address
8780 BIG BEND BLVD
STE D
SAINT LOUIS, MO, 63119
USA
Mailing Address
8780 BIG BEND BLVD
Suite D
SAINT LOUIS, MO, 63119
USA
Government Business Contact
Mike DaPrato
Sales
8780 Big Bend Blvd
Suite D
st louis, MO, 63119
USA
Electronic Business Contact
SHARON WHITELEY
Director of Operations
8780 Big Bend Blvd
Suite D
st louis, MO, 63119
USA
Past Performance Contact
MICHAEL A DaPRATO
8780 big bend blvd
SUITE D
WEBSTER GROVES, MO, 63119
USA
Government Business Alternate Contact
MICHAEL A DaPRATO
8780 big bend blvd
SUITE D
SAINT LOUIS, MO, 63119
USA
Electronic Business Alternate Contact
SHARON WHITELEY
8780 big bend blvd
SUITE D
SAINT LOUIS, MO, 63119
USA
Additional Details
As of . Source: SAM.gov Entity Registration.
ON SITE SYSTEMS INC has no active federal suspension or debarment on record in SAM.gov. Current SAM.gov registration expires July 14, 2027.
Source: SAM.gov entity registration (FAR responses, registration status). Always verify active exclusions against the authoritative record on SAM.gov before contract award.
Compliance & Risk Assessment
Source: SAM.gov FAR responsesSuspension/Debarment Status
SAM.gov registration reports no active exclusion
Public Display
Entity information is publicly displayed
Disaster Relief Registry
Not registered for disaster relief
Bonding Information
No bonding information provided
EDI
Not declared in SAM.gov
Business Structure
Source: SAM.govRegistration Details
Source: SAM.govInitial Registration
Last Update
Registration Activation
Fiscal Year End
Country of Incorporation
Congressional District
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