NAICS 621999 — ALL OTHER MISCELLANEOUS AMBULATORY HEALTH CARE SERVICES
Federal contract awards classified under NAICS code 621999 (ALL OTHER MISCELLANEOUS AMBULATORY HEALTH CARE SERVICES) cover 228 unique federal contracts (255 total action records) from USASpending.gov. The top contractors, awarding agencies, and geographic concentration below are aggregated from the highest-value awards in this market — the right view for sizing competition and identifying incumbents.
Top Contractors in NAICS 621999
Largest recipients of federal contract dollars in this NAICS code (ranked by total obligated value). These are the incumbent competitors to know if you sell into this market.
| Contractor | Awards | Total Obligated |
|---|---|---|
| STG INTERNATIONAL, INC. | 2 | $659.9M |
| SERVEFED INC. | 4 | $87.3M |
| THE ARORA GROUP, INC. | 1 | $54.3M |
| CG SERVICES LLC | 1 | $43.9M |
| QTC MEDICAL SERVICES INC | 1 | $43.0M |
| INGENESIS INC | 1 | $37.6M |
| KADIAK LLC | 1 | $28.3M |
| LONGVIEW INTERNATIONAL TECHNOLOGY SOLUTIONS, INC. | 1 | $27.4M |
| CHENEGA HEALTHCARE SERVICES LLC | 1 | $19.9M |
| DESTINY MANAGEMENT SERVICES, LLC | 6 | $19.0M |
Top Awarding Agencies
Federal agencies that obligate the most spending in NAICS 621999. Click any agency to see its full contract portfolio, top contractors, and sub-agencies.
| Agency | Awards | Total Obligated |
|---|---|---|
| Department of Homeland Security | 16 | $792.5M |
| Department of Health and Human Services | 37 | $236.7M |
| Department of Defense | 55 | $88.8M |
| General Services Administration | 1 | $43.9M |
| Department of Veterans Affairs | 59 | $39.6M |
| Department of Energy | 6 | $22.3M |
| Department of Transportation | 3 | $13.6M |
| National Aeronautics and Space Administration | 3 | $13.1M |
| Department of Justice | 23 | $5.2M |
| Department of the Interior | 7 | $1.8M |
Geographic Concentration
States where NAICS 621999 contract work is performed, ranked by total obligated value. Useful for sizing the local market and identifying state-level competitors.
| State | Awards | Total Obligated |
|---|---|---|
| VA | 22 | $715.4M |
| MD | 9 | $159.6M |
| TX | 14 | $59.6M |
| LA | 2 | $54.3M |
| PA | 6 | $45.3M |
| FL | 9 | $33.2M |
| CO | 10 | $30.5M |
| GA | 2 | $29.0M |
| NM | 5 | $22.2M |
| DC | 11 | $16.4M |
Most Recent Awards
DT-TRAK CONSULTING, INC.
PURCHASE ORDER FOR LABORATORY TECHNOLOGIST SERVICES
DT-TRAK CONSULTING, INC.
PURCHASE ORDER FOR LABORATORY TECHNOLOGIST SERVICES
QTC MEDICAL SERVICES INC
TAS::75 4552 001::TAS PRIVATE PROVIDER NETWORK OF MEDICAL SERVICES
HEALTHTRONICS STONE SOLUTIONS, LLC
EXTRACORPOREAL SHOCKWAVE LITHOTRIPSY (ESWL) TREATMENT LEASE SERVICE
PEMBROOKE OCCUPATIONAL HEALTH, INC.
MISSION CRITICAL - EXECUTING COURT ORDERS AND ARREST WARRANTS FY26 HRD DRUG AND ALCOHOL LAB COLLECTION (DOI TO)
All Unique Contracts in NAICS 621999
Showing 228 unique contracts (one entry per PIID, deduped from modifications) sorted by total dollars obligated.
STG INTERNATIONAL, INC.
IGF::OT::IGF IHSC MEDICAL STAFFING SERVICES
SERVEFED INC.
CLINICAL EAST OCCUPATIONAL HEALTH SUPPORT SERVICES
THE ARORA GROUP, INC.
MEDICAL STAFFING SERVICES
CG SERVICES LLC
DEPARTMENT OF DEFENSE MEDICAL EXAMINATION REVIEW BOARD MEDICAL SERVICES
QTC MEDICAL SERVICES INC
TAS::75 4552 001::TAS PRIVATE PROVIDER NETWORK OF MEDICAL SERVICES
INGENESIS INC
MEDICAL STAFFING SERVICES FOR THE ICE HEALTH SERVICE CORPS (IHSC) TASK ORDER 3
KADIAK LLC
HEALTH SERVICES, ENTERPRISE, SBA EM1608747851Z
LONGVIEW INTERNATIONAL TECHNOLOGY SOLUTIONS, INC.
ICATT
SERVEFED INC.
CLINICAL WEST OCCUPATIONAL HEALTH SUPPORT SERVICES
CHENEGA HEALTHCARE SERVICES LLC
MEDICAL SUPPORT SERVICES FOR THE DOE/NNSA OFFICE OF SECURE TRANSPORTATION - NA-15.
STG INTERNATIONAL, INC.
THIS IS AN ISSUANCE OF TASK ORDER 8, AGAINST STG INTERNATIONAL CONTRACT # HHSP233201800010I FOR THE NATIONAL STAFFING SERVICES SUPPORT. THIS TASK ORDER WILL HAVE A BASE PERIOD OF PERFORMANCE MARCH 1, 2025 THROUGH JUNE 30, 2025.
NATIONWIDE HEALTHCARE SOLUTIONS, LLC
CLINICAL NATIONAL CAPITAL REGION (NCR) SUPPORT SERVICES TASK ORDER#1
NORTH EAST SOUTH WEST HEALTHCARE SOLUTIONS, LLC
MEDICAL STAFFING SERVICES FOR THE ICE HEALTH SERVICE CORPS (IHSC)
ARAPAHO TECHNICAL SERVICES LLC
MEDICAL SUPPORT SERVICES
DESTINY MANAGEMENT SERVICES, LLC
MEDICAL OFFICE CLERKS
SEATTLE INDIAN HEALTH BOARD
SIHB - URBAN INDIAN HEALTH CARE SERVICES - SEATTLE, WASHINGTON
AVOSYS TECHNOLOGY, INC.
MEDICAL OFFICE CLERKS AND REFERRAL CLERK
ACUITY-CHS, LLC
MEDICAL SERVICES
FORENSIC DRUG & ALCOHOL TESTING LLC
SPECIMEN COLLECTION SERVICES RELATED TO DRUG/ALCOHOL TESTING SERVICES DOT-WIDE.
SERVEFED INC.
OCCUPATIONAL HEALTH SERVICE - PHASE-IN THE CONTRACTOR SHALL PROVIDE OCCUPATIONAL HEALTH SERVICES IN ACCORDANCE WITH ATTACHMENT 1, PERFORMANCE WORK STATEMENT(PWS)
URBAN INDIAN CENTER OF SALT LAKE
SERVICES. INDIAN HEALTH CARE IMPROVEMENT ACT (IHCIA). LETTER CONTRACT HHSI247202220013C. PROFESSIONAL MEDICAL AND HEALTH CARE SERVICES FOR URBAN INDIANS RESIDING IN THE SAALT LAKE CITY METROPOLITAN URBAN AREA. IAW WITH TERMS AND CONDITIONS.
JOHNSON VENTURE MANAGEMENT SOLUTIONS, INC.
OCCUPATIONAL HEALTH SUPPORT SERVICES
CSRS3 LLC
INTEGRATED REFERRAL MANAGEMENT AND APPOINTING CENTERS (IRMAC) SERVICES, FL PANHANDLE
COGNOSANTE MVH LLC
EXPRESS REPORT DECEMBER 2025
FORENSIC DRUG & ALCOHOL TESTING LLC
ESTABLISH NEW TASK ORDER TO OBLIGATE FUNDING TO OPTION YEAR 2 (FROM OCTOBER 1, 2025, TO SEPTEMBER 30, 2026) AND PROVIDE FUNDING IN THE AMOUNT OF $1,458.000.00 FROM OCTOBER 1, 2025, THRU OCTOBER 31, 2025.