Top 100 Contractors in PSC Q999: Other Medical Services, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Triwest Healthcare Alliance Corp Top agencies VA (Department of Veterans Affairs)	$271,758,863	17.2%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023 and #3 in FY2025; up 1 since FY2023.
2	American Medical Response Inc. 2 awardees, including American Medical Response West Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$126,109,624	8.0%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
3	KBR Wyle Services, LLC 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$97,331,468	6.1%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2025; new.
4	Naphcare LLC Top agencies DOJ (Department of Justice)	$42,918,895	2.7%	Rank history: #10 in FY2021, #7 in FY2022, #7 in FY2023 and #6 in FY2025; up 3 since FY2023.
5	Tribal Health, LLC Top agencies HHS (Department of Health and Human Services)	$37,992,559	2.4%	Rank history: #15 in FY2021, #11 in FY2022, #12 in FY2023 and #21 in FY2025; up 7 since FY2023.
6	Wellpath LLC Top agencies DOJ (Department of Justice)	$34,202,515	2.2%	Rank history: #11 in FY2021, #13 in FY2022, #13 in FY2023 and #11 in FY2025; up 7 since FY2023.
7	Acuity-Chs, LLC Top agencies DHS (Department of Homeland Security)	$28,421,282	1.8%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2025; new.
8	Blue Cross and Blue Shield of South Carolina Through Karna LLC Top agencies HHS (Department of Health and Human Services)	$24,627,656	1.6%	Rank history: not on the FY2021 list, #19 in FY2022, #10 in FY2023 and #10 in FY2025; up 2 since FY2023.
9	Sedgwick Public Sector LLC Through Managed Care Advisors, Inc. Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$22,565,932	1.4%	Rank history: not on the FY2021 list, #21 in FY2022, #14 in FY2023 and not on the FY2025 list; up 5 since FY2023.
10	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$21,773,500	1.4%	Rank history: #7 in FY2021, #6 in FY2022, #4 in FY2023 and not on the FY2025 list; down 6 since FY2023.
11	Acuity - CHS Middle East, LLC Top agencies DOS (Department of State)	$21,314,635	1.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
12	Servefed Inc. Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration) DOJ (Department of Justice)	$21,199,136	1.3%	Rank history: #34 in FY2021, #15 in FY2022, #16 in FY2023 and #15 in FY2025; up 4 since FY2023.
13	Sanofi Pasteur Inc. Through Sanofi Vaccines US Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$20,767,279	1.3%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2025; new.
14	STG International, Inc. Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior) AOUSC (Administrative Office of the U.S. Courts)	$20,451,687	1.3%	Rank history: #17 in FY2021, #17 in FY2022, #19 in FY2023 and #19 in FY2025; up 5 since FY2023.
15	Seven Corners Inc. Top agencies DOJ (Department of Justice)	$19,298,415	1.2%	Rank history: #53 in FY2021, #16 in FY2022, #17 in FY2023 and #12 in FY2025; up 2 since FY2023.
16	SNA International LLC Top agencies OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service)	$17,407,755	1.1%	Rank history: not on the FY2021 list, #25 in FY2022, #20 in FY2023 and #18 in FY2025; up 4 since FY2023.
17	Bay Area Anesthesia LLC Top agencies HHS (Department of Health and Human Services)	$14,956,858	0.9%	Rank history: #87 in FY2021, #31 in FY2022, #22 in FY2023 and #24 in FY2025; up 5 since FY2023.
18	Prime Physicians PLLC Top agencies HHS (Department of Health and Human Services) SSA (Social Security Administration)	$13,815,643	0.9%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2025; up 388 since FY2023.
19	Hospital Housekeeping Systems LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$13,309,650	0.8%	Rank history: #33 in FY2021, #36 in FY2022, not on the FY2023 list and #25 in FY2025; returned.
20	Luke & Associates Inc. 2 awardees Top agencies DHA (Defense Health Agency)	$13,005,827	0.8%	Rank history: #24 in FY2021, #37 in FY2022, #27 in FY2023 and #51 in FY2025; up 7 since FY2023.
21	Aphena Pharma Solutions-Tennessee, LLC Top agencies VA (Department of Veterans Affairs)	$12,153,924	0.8%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2025; new.
22	University of Massachusetts Through University of Massachusetts Medical School Top agencies DOJ (Department of Justice)	$11,887,492	0.8%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; new.
23	Mercy Hospital Springfield Top agencies DOJ (Department of Justice)	$11,868,908	0.7%	Rank history: #31 in FY2021, #44 in FY2022, #29 in FY2023 and #34 in FY2025; up 6 since FY2023.
24	American Institutes for Research In the Behavioral Sciences Top agencies HHS (Department of Health and Human Services)	$10,975,465	0.7%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; new.
25	The University of North Texas Health Science Center At Fort Worth Top agencies DOJ (Department of Justice)	$10,553,253	0.7%	Rank history: #26 in FY2021, #26 in FY2022, #28 in FY2023 and #49 in FY2025; up 3 since FY2023.
26	American Correctional Healthcare, Inc. Top agencies DOJ (Department of Justice)	$9,398,451	0.6%	Rank history: not on the FY2021 list, #34 in FY2022, #24 in FY2023 and #40 in FY2025; down 2 since FY2023.
27	Jackson Healthcare, LLC 2 awardees, including Locumtenens.com, LLC Top agencies VA (Department of Veterans Affairs)	$8,805,150	0.6%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2023 and not on the FY2025 list; up 17 since FY2023.
28	Transox Inc. Top agencies VA (Department of Veterans Affairs)	$8,566,024	0.5%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2025; new.
29	Commonwealth Home Health Care, Inc. Top agencies VA (Department of Veterans Affairs)	$7,710,926	0.5%	Rank history: #38 in FY2021, #41 in FY2022, #33 in FY2023 and #30 in FY2025; up 4 since FY2023.
30	American Pet Insurance Company Top agencies VA (Department of Veterans Affairs)	$7,613,084	0.5%	Rank history: not on the FY2021 list, #49 in FY2022, #40 in FY2023 and not on the FY2025 list; up 10 since FY2023.
31	Prairie Band Health Services Inc. Top agencies HHS (Department of Health and Human Services)	$7,368,615	0.5%	Rank history: not on the FY2021 list, #73 in FY2022, #47 in FY2023 and #29 in FY2025; up 16 since FY2023.
32	Ridgecrest Regional Hospital Top agencies Navy (Department of the Navy)	$6,761,304	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	Integrated Medical Solutions, LLC Top agencies DOJ (Department of Justice)	$6,755,802	0.4%	Rank history: #21 in FY2021, #27 in FY2022, #25 in FY2023 and #27 in FY2025; down 8 since FY2023.
34	Cherokee Nation Integrated Health, L.L.C. Top agencies DHA (Defense Health Agency)	$6,620,239	0.4%	Rank history: not on the FY2021 list, #57 in FY2022, #42 in FY2023 and not on the FY2025 list; up 8 since FY2023.
35	Managed Care Advisors, Inc. Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$6,470,589	0.4%	Rank history: #56 in FY2021, #90 in FY2022, not on the FY2023 list and #13 in FY2025; returned.
36	Vista Staffing Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$6,436,893	0.4%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2025; up 119 since FY2023.
37	Property & Environmental Management Inc. Top agencies HHS (Department of Health and Human Services)	$6,171,781	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
38	SS Medical, Inc. Top agencies VA (Department of Veterans Affairs)	$6,152,796	0.4%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2025; new.
39	Emergency Physicians Medical Group P.C. Through Vista Staffing Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$6,061,388	0.4%	Rank history: #57 in FY2021, #61 in FY2022, #49 in FY2023 and not on the FY2025 list; up 10 since FY2023.
40	Seattle Indian Health Board Top agencies HHS (Department of Health and Human Services)	$5,829,148	0.4%	Rank history: #48 in FY2021, #51 in FY2022, #46 in FY2023 and #38 in FY2025; up 6 since FY2023.
41	Enterprise Resource Planning International, LLC Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency)	$5,679,624	0.4%	Rank history: #30 in FY2021, #32 in FY2022, #23 in FY2023 and #55 in FY2025; down 18 since FY2023.
42	West Virginia University Hospitals, Inc. Top agencies DOJ (Department of Justice)	$5,336,824	0.3%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023 and not on the FY2025 list; up 51 since FY2023.
43	Oregon Health & Science University Top agencies VA (Department of Veterans Affairs)	$5,328,843	0.3%	Rank history: #69 in FY2021, #69 in FY2022, #30 in FY2023 and #68 in FY2025; down 13 since FY2023.
44	Dilligas Corp Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$5,031,961	0.3%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2025; up 92 since FY2023.
45	United Network for Organ Sharing Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$5,025,041	0.3%	Rank history: #40 in FY2021, #45 in FY2022, #58 in FY2023 and #35 in FY2025; up 13 since FY2023.
46	Sequoyah Staffing Agency, LLC Top agencies HHS (Department of Health and Human Services)	$5,018,983	0.3%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023 and #53 in FY2025; up 6 since FY2023.
47	Aphena Pharma Solutions Holdings, Inc. Through Aphena Pharma Solutions-Tennessee, LLC Top agencies VA (Department of Veterans Affairs)	$4,879,606	0.3%	Rank history: #29 in FY2021, #29 in FY2022, #21 in FY2023 and not on the FY2025 list; down 26 since FY2023.
48	Mednick Associates, LLC Top agencies SSA (Social Security Administration)	$4,852,740	0.3%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2023 and #59 in FY2025; down 13 since FY2023.
49	Rapid Temps, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$4,709,649	0.3%	Rank history: not on the FY2021 list, #46 in FY2022, #76 in FY2023 and not on the FY2025 list; up 27 since FY2023.
50	Team Health Inc. Through Spectrum Healthcare Resources, Inc. Top agencies HHS (Department of Health and Human Services)	$4,532,561	0.3%	Rank history: #19 in FY2021, #35 in FY2022, #32 in FY2023 and not on the FY2025 list; down 18 since FY2023.
51	Leidos Holdings, Inc. Through QTC Medical Services Inc. Top agencies DOJ (Department of Justice) DOL (Department of Labor)	$4,087,592	0.3%	Rank history: #59 in FY2021, not on the FY2022 list, #54 in FY2023 and not on the FY2025 list; up 3 since FY2023.
52	Dentrust Dental International, Inc. 2 awardees, including Dentrust Dental Texas, P.C. Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$4,014,313	0.3%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2025; up 147 since FY2023.
53	The Native American Rehabilitation Association of the Northwest, Incorporated Top agencies HHS (Department of Health and Human Services)	$3,538,748	0.2%	Rank history: #55 in FY2021, #55 in FY2022, #50 in FY2023 and #57 in FY2025; down 3 since FY2023.
54	Greene Respiratory Services, Inc. Top agencies VA (Department of Veterans Affairs)	$3,500,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2023 and not on the FY2025 list; up 11 since FY2023.
55	Spectrum Healthcare Resources, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$3,489,987	0.2%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2023 and not on the FY2025 list; down 12 since FY2023.
56	Nevada Urban Indians Inc. Top agencies HHS (Department of Health and Human Services)	$3,395,574	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 47 since FY2023.
57	Millbrook Support Services Inc Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$3,389,660	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 100 since FY2023.
58	Nationwide Healthcare Solutions, LLC Top agencies HHS (Department of Health and Human Services)	$2,928,177	0.2%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; new.
59	Nitelines USA Inc. Top agencies DOJ (Department of Justice) DHA (Defense Health Agency)	$2,911,248	0.2%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2025; up 47 since FY2023.
60	Akicita Cyber LLC Top agencies HHS (Department of Health and Human Services)	$2,904,478	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 111 since FY2023.
61	GLC on-the-Go Inc. Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services)	$2,895,599	0.2%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023 and #88 in FY2025; up 12 since FY2023.
62	Native Health Top agencies HHS (Department of Health and Human Services)	$2,870,643	0.2%	Rank history: #95 in FY2021, #14 in FY2022, #67 in FY2023 and #61 in FY2025; up 5 since FY2023.
63	JJR Solutions LLC Top agencies DHA (Defense Health Agency)	$2,837,882	0.2%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023 and not on the FY2025 list; up 6 since FY2023.
64	First Community Care L.L.C. Top agencies VA (Department of Veterans Affairs)	$2,800,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023 and not on the FY2025 list; down 3 since FY2023.
65	Kebros & Associates LLC Top agencies DOJ (Department of Justice)	$2,712,974	0.2%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and #75 in FY2025; up 14 since FY2023.
66	Mystic Ventures Group LLC Top agencies VA (Department of Veterans Affairs)	$2,649,528	0.2%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
67	Native American Connections, Inc. Top agencies HHS (Department of Health and Human Services)	$2,603,730	0.2%	Rank history: not on the FY2021 list, #30 in FY2022, not on the FY2023 list and #100 in FY2025; up 89 since FY2023.
68	Reef Systems Corp Top agencies USAF (Department of the Air Force)	$2,561,789	0.2%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2025; new.
69	Akahi Ingenesis Partners LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$2,512,923	0.2%	Rank history: #90 in FY2021, #60 in FY2022, #75 in FY2023 and not on the FY2025 list; up 6 since FY2023.
70	Cross Country Healthcare, Inc. 2 awardees, including Medical Doctor Associates LLC and Assignment America LLC Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$2,508,124	0.2%	Rank history: #74 in FY2021, #67 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
71	Seaborn Health Care Inc. Top agencies DOJ (Department of Justice)	$2,489,550	0.2%	Rank history: #81 in FY2021, #96 in FY2022, #78 in FY2023 and #52 in FY2025; up 7 since FY2023.
72	Ghost RX Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$2,328,423	0.1%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and not on the FY2025 list; up 10 since FY2023.
73	EGA Associates LLC Top agencies VA (Department of Veterans Affairs)	$2,316,346	0.1%	Rank history: not on the FY2021 list, #97 in FY2022, #60 in FY2023 and not on the FY2025 list; down 13 since FY2023.
74	Massachusetts General Physicians Organization, Inc. Top agencies HHS (Department of Health and Human Services)	$2,296,794	0.1%	Rank history: not on the FY2021–FY2023 lists and #65 in FY2025; new.
75	Nebraska Urban Indian Health C Through Nebraska Urban Indian Health Coalition, Inc. Top agencies HHS (Department of Health and Human Services)	$2,290,085	0.1%	Rank history: #35 in FY2021, not on the FY2022 list, #62 in FY2023 and not on the FY2025 list; down 13 since FY2023.
76	Western Interstate Commission for Higher Education Top agencies VA (Department of Veterans Affairs)	$2,273,375	0.1%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023 and not on the FY2025 list; down 12 since FY2023.
77	Durham Exchange Club Industries, Inc. Top agencies VA (Department of Veterans Affairs)	$2,202,687	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and #76 in FY2025; up 15 since FY2023.
78	Native Americans for Community Action, Inc. Top agencies HHS (Department of Health and Human Services)	$2,151,156	0.1%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2025; new.
79	Interagency Readiness Solutions, LLC Top agencies Army (Department of the Army)	$2,127,102	0.1%	Rank history: #75 in FY2021, #85 in FY2022, #94 in FY2023 and #84 in FY2025; up 15 since FY2023.
80	Cigna Worldwide Insurance Branch Top agencies Army (Department of the Army)	$2,086,408	0.1%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2025; new.
81	Kadiak LLC Top agencies DHS (Department of Homeland Security)	$2,057,038	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	University of Arizona Top agencies HHS (Department of Health and Human Services)	$2,045,051	0.1%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2025; new.
83	Quality Innovation, Inc. Top agencies DOJ (Department of Justice)	$2,027,344	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
84	J & J Maintenance Inc. Top agencies DHA (Defense Health Agency)	$1,999,933	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	South Dakota Urban Indian Health Inc. (SDUIH) Top agencies HHS (Department of Health and Human Services)	$1,972,003	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	Urban Indian Center of Salt Lake Top agencies HHS (Department of Health and Human Services)	$1,956,790	0.1%	Rank history: not on the FY2021 list, #22 in FY2022, not on the FY2023 list and #86 in FY2025; up 31 since FY2023.
87	Bering Straits Professional Services, LLC Top agencies DHA (Defense Health Agency)	$1,951,388	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
88	The Native Project Top agencies HHS (Department of Health and Human Services)	$1,944,621	0.1%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2023 and #85 in FY2025; up 3 since FY2023.
89	Koniag, Inc. 2 awardees, including Koniag Information Security Services LLC Top agencies Treasury (Department of the Treasury)	$1,887,517	0.1%	Rank history: #62 in FY2021, #65 in FY2022, #97 in FY2023 and #42 in FY2025; up 8 since FY2023.
90	AA - Ring MD JV, LLC Top agencies HHS (Department of Health and Human Services)	$1,827,224	0.1%	Rank history: not on the FY2021–FY2023 lists and #91 in FY2025; up 25 since FY2023.
91	Native American Development Corp Top agencies HHS (Department of Health and Human Services)	$1,824,429	0.1%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023 and #90 in FY2025; down 4 since FY2023.
92	Laredo Technical Services, Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$1,817,273	0.1%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; new.
93	Comprehensive Human Services Corp Top agencies DOJ (Department of Justice)	$1,815,449	0.1%	Rank history: not on the FY2021–FY2023 lists and #54 in FY2025; up 11 since FY2023.
94	Clym Environmental Services LLC Top agencies HHS (Department of Health and Human Services)	$1,740,427	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 87 since FY2023.
95	Sodak Medical Management LLC Top agencies HHS (Department of Health and Human Services)	$1,711,561	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 164 since FY2023.
96	Indian Health Center of Santa Clara Valley Top agencies HHS (Department of Health and Human Services)	$1,698,934	0.1%	Rank history: #36 in FY2021, not on the FY2022 list, #95 in FY2023 and not on the FY2025 list; down 1 since FY2023.
97	Indian Family Health Clinic of Great Falls Inc. Top agencies HHS (Department of Health and Human Services)	$1,680,620	0.1%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2025; up 11 since FY2023.
98	Chenega Healthcare Services LLC Top agencies DOE (Department of Energy)	$1,679,315	0.1%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2025; new.
99	Leader Six Inc. Top agencies DHA (Defense Health Agency)	$1,676,914	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 41 since FY2023.
100	Saratoga Medical Center, Inc. Top agencies USAF (Department of the Air Force)	$1,674,013	0.1%	Rank history: not on the FY2021 list, #79 in FY2022, #63 in FY2023 and not on the FY2025 list; down 37 since FY2023.

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $1.58 billion obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Fiscal year 2024 ran Oct 1, 2023 – Sep 30, 2024. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2023. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2023 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers