Top 100 Contractors in NAICS 621111: Offices of Physicians (except Mental Health Specialists), FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Leidos Holdings, Inc. Through QTC Medical Services Inc. Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$1,118,080,821	31.7%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2024 and #1 in FY2025; unchanged since FY2022.
2	UnitedHealth Group Incorporated Through Optumserve Health Services, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$736,372,066	20.9%	Rank history: #3 in FY2021, #2 in FY2022, #2 in FY2024 and #2 in FY2025; unchanged since FY2022.
3	Maximus Inc. Through Veterans Evaluation Services, Inc. Top agencies VA (Department of Veterans Affairs)	$692,925,364	19.6%	Rank history: #5 in FY2021, #3 in FY2022, #4 in FY2024 and not on the FY2025 list; unchanged since FY2022.
4	Loyal Source Government Services LLC Top agencies VA (Department of Veterans Affairs)	$91,273,632	2.6%	Rank history: not on the FY2021 list, #8 in FY2022, #5 in FY2024 and #4 in FY2025; up 4 since FY2022.
5	Triwest Healthcare Alliance Corp Top agencies VA (Department of Veterans Affairs)	$33,584,105	1.0%	Rank history: #1 in FY2021, #4 in FY2022, #75 in FY2024 and not on the FY2025 list; down 1 since FY2022.
6	The Chenega Corporation 3 awardees, including Chenega Tri-Services, LLC, Chenega Reliable Services LLC and Chenega Healthcare Services LLC Top agencies Army (Department of the Army) Commerce (Department of Commerce) NSF (National Science Foundation)	$32,158,072	0.9%	Rank history: #6 in FY2021, #7 in FY2022, #8 in FY2024 and not on the FY2025 list; up 1 since FY2022.
7	International Sos Government Medical Services, Inc. Top agencies Army (Department of the Army)	$17,146,704	0.5%	Rank history: not on the FY2021 list, #5 in FY2022, #18 in FY2024 and not on the FY2025 list; down 2 since FY2022.
8	Medicus Healthcare Solutions, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$9,628,856	0.3%	Rank history: #20 in FY2021, #11 in FY2022, #16 in FY2024 and #14 in FY2025; up 3 since FY2022.
9	Ghost RX Inc. 2 awardees Top agencies VA (Department of Veterans Affairs)	$8,554,234	0.2%	Rank history: #29 in FY2021, #37 in FY2022 and not on the FY2024–FY2025 lists; up 28 since FY2022.
10	Jade Wolf Operations, LLC Top agencies VA (Department of Veterans Affairs)	$6,656,841	0.2%	Rank history: #52 in FY2021, #55 in FY2022, #28 in FY2024 and #27 in FY2025; up 45 since FY2022.
11	Vetmed Group LLC 2 awardees Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$5,521,305	0.2%	Rank history: #30 in FY2021, #27 in FY2022, #12 in FY2024 and #12 in FY2025; up 16 since FY2022.
12	Sequoyah Staffing Agency, LLC Top agencies HHS (Department of Health and Human Services)	$5,409,526	0.2%	Rank history: #21 in FY2021, #60 in FY2022, #14 in FY2024 and #18 in FY2025; up 48 since FY2022.
13	Bay Area Anesthesia LLC Top agencies HHS (Department of Health and Human Services)	$4,741,883	0.1%	Rank history: #92 in FY2021, #38 in FY2022, #24 in FY2024 and #44 in FY2025; up 25 since FY2022.
14	Ansible Government Solutions LLC Top agencies VA (Department of Veterans Affairs)	$4,667,160	0.1%	Rank history: #17 in FY2021, #13 in FY2022, #42 in FY2024 and #33 in FY2025; down 1 since FY2022.
15	Rielcad JV LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency)	$4,539,522	0.1%	Rank history: #85 in FY2021, #30 in FY2022, #32 in FY2024 and #29 in FY2025; up 15 since FY2022.
16	Acuity International LLC Top agencies Army (Department of the Army) USDA (Department of Agriculture)	$4,359,368	0.1%	Rank history: not on the FY2021 list, #16 in FY2022, #21 in FY2024 and #9 in FY2025; unchanged since FY2022.
17	Oklahoma State University Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$4,314,864	0.1%	Rank history: #14 in FY2021, #19 in FY2022, #85 in FY2024 and not on the FY2025 list; up 2 since FY2022.
18	Nativearc, LLC Top agencies HHS (Department of Health and Human Services)	$4,189,730	0.1%	Rank history: not on the FY2021 list, #23 in FY2022, #30 in FY2024 and #74 in FY2025; up 5 since FY2022.
19	CHS Middle East LLC Through Acuity-Chs, LLC Top agencies WHS (DOD Washington Headquarters Service) Treasury (Department of the Treasury) HUD (Department of Housing and Urban Development)	$3,573,915	0.1%	Rank history: #23 in FY2021, #24 in FY2022, #67 in FY2024 and not on the FY2025 list; up 5 since FY2022.
20	AB Staffing Solutions LLC Top agencies HHS (Department of Health and Human Services)	$3,417,157	0.1%	Rank history: #18 in FY2021, #17 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
21	Avosys Technology, Inc. Top agencies USAF (Department of the Air Force)	$3,267,123	0.1%	Rank history: #10 in FY2021, #14 in FY2022, #17 in FY2024 and #16 in FY2025; down 7 since FY2022.
22	Nationwide Healthcare Solutions, LLC Top agencies Army (Department of the Army)	$3,108,675	0.1%	Rank history: #35 in FY2021, #40 in FY2022, #40 in FY2024 and #39 in FY2025; up 18 since FY2022.
23	Assurgent Medical Staffing LLC Top agencies VA (Department of Veterans Affairs)	$3,074,474	0.1%	Rank history: #63 in FY2021, #77 in FY2022, #34 in FY2024 and #34 in FY2025; up 54 since FY2022.
24	Medical Faculty Associates, Inc. Top agencies DHA (Defense Health Agency) Smithsonian (Smithsonian Institution) Peace Corps	$3,013,102	0.1%	Rank history: #25 in FY2021, #32 in FY2022, #35 in FY2024 and #69 in FY2025; up 8 since FY2022.
25	Chickasaw Business Solutions, LLC Top agencies USAF (Department of the Air Force)	$3,007,893	0.1%	Rank history: not on the FY2021 list, #34 in FY2022, #37 in FY2024 and #36 in FY2025; up 9 since FY2022.
26	Team Health Inc. Through Spectrum Healthcare Resources, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$2,960,876	0.1%	Rank history: #22 in FY2021, not on the FY2022 list, #23 in FY2024 and not on the FY2025 list; returned.
27	Native Health Top agencies HHS (Department of Health and Human Services)	$2,854,083	0.1%	Rank history: #33 in FY2021, #6 in FY2022, #33 in FY2024 and #32 in FY2025; down 21 since FY2022.
28	CHG Healthcare Services Inc. Through CHG Companies, Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$2,718,947	0.1%	Rank history: #95 in FY2021, #35 in FY2022, #27 in FY2024 and not on the FY2025 list; up 7 since FY2022.
29	Prairie Band Health Services Inc. Top agencies HHS (Department of Health and Human Services)	$2,708,764	0.1%	Rank history: not on the FY2021 list, #21 in FY2022, #13 in FY2024 and #8 in FY2025; down 8 since FY2022.
30	Vision Technology Inc. Top agencies Army (Department of the Army)	$2,580,322	0.1%	Rank history: #65 in FY2021, #36 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
31	All Valley Imaging, L.l.c Top agencies HHS (Department of Health and Human Services)	$2,010,462	0.1%	Rank history: not on the FY2021 list, #67 in FY2022, #38 in FY2024 and #77 in FY2025; up 36 since FY2022.
32	U.s. Federal Solutions, Inc. Top agencies DHA (Defense Health Agency)	$1,996,653	0.1%	Rank history: #54 in FY2021, #44 in FY2022, #46 in FY2024 and not on the FY2025 list; up 12 since FY2022.
33	Eagle Health Analytics, LLC Top agencies DHA (Defense Health Agency)	$1,895,939	0.1%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2024 and #57 in FY2025; new.
34	Total Emergency Ambulatory Medicine LLP Top agencies VA (Department of Veterans Affairs)	$1,888,772	0.1%	Rank history: #11 in FY2021, #18 in FY2022, #53 in FY2024 and not on the FY2025 list; down 16 since FY2022.
35	University of Washington Top agencies HHS (Department of Health and Human Services)	$1,803,504	0.1%	Rank history: not on the FY2021 list, #97 in FY2022 and not on the FY2024–FY2025 lists; up 62 since FY2022.
36	Metropolitan Medical LLC Top agencies USDA (Department of Agriculture)	$1,802,600	0.1%	Rank history: not on the FY2021 list, #53 in FY2022, #44 in FY2024 and not on the FY2025 list; up 17 since FY2022.
37	Brigham & Womens Hospital Inc 3 awardees, including The General Hospital Corporation and Massachusetts General Physicians Organization, Inc. Top agencies HHS (Department of Health and Human Services)	$1,741,177	<0.1%	Rank history: not on the FY2021 list, #81 in FY2022 and not on the FY2024–FY2025 lists; up 44 since FY2022.
38	Market Services, Inc. Top agencies HHS (Department of Health and Human Services)	$1,723,762	<0.1%	Rank history: #39 in FY2021, #31 in FY2022, #74 in FY2024 and not on the FY2025 list; down 7 since FY2022.
39	WJM Professional Services LLC Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$1,595,819	<0.1%	Rank history: not on the FY2021 list, #87 in FY2022, #83 in FY2024 and #7 in FY2025; up 48 since FY2022.
40	TDY Medical Staffing Inc. Top agencies VA (Department of Veterans Affairs)	$1,542,267	<0.1%	Rank history: #28 in FY2021, #91 in FY2022, #61 in FY2024 and #52 in FY2025; up 51 since FY2022.
41	MCV Associated Physicians Top agencies VA (Department of Veterans Affairs)	$1,520,637	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
42	Avera Health 2 awardees, including Avera Mckennan and Wagner Community Memorial Hospital Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$1,512,686	<0.1%	Rank history: #31 in FY2021, #52 in FY2022 and not on the FY2024–FY2025 lists; up 10 since FY2022.
43	EGA Associates LLC Top agencies VA (Department of Veterans Affairs)	$1,484,081	<0.1%	Rank history: #34 in FY2021, #25 in FY2022, #31 in FY2024 and #24 in FY2025; down 18 since FY2022.
44	Minneapolis Radiology Associates, Ltd. Top agencies VA (Department of Veterans Affairs)	$1,426,479	<0.1%	Rank history: #41 in FY2021, #49 in FY2022, #41 in FY2024 and #47 in FY2025; up 5 since FY2022.
45	Call Solutions, LLC Top agencies VA (Department of Veterans Affairs)	$1,354,700	<0.1%	Rank history: #58 in FY2021, #46 in FY2022, #78 in FY2024 and #42 in FY2025; up 1 since FY2022.
46	Four Winds Staffing LLC Top agencies HHS (Department of Health and Human Services)	$1,294,340	<0.1%	Rank history: not on the FY2021 list, #99 in FY2022, #57 in FY2024 and #37 in FY2025; up 53 since FY2022.
47	Inrad, LLC Top agencies HHS (Department of Health and Human Services)	$1,274,073	<0.1%	Rank history: #27 in FY2021, #29 in FY2022 and not on the FY2024–FY2025 lists; down 18 since FY2022.
48	State of California Controllers Office 3 awardees, including The Regents of the University of California. San Francisco and University of California, LOS Angeles Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$1,264,209	<0.1%	Rank history: #50 in FY2021, #33 in FY2022 and not on the FY2024–FY2025 lists; down 15 since FY2022.
49	Rice Solutions, LLC Top agencies VA (Department of Veterans Affairs)	$1,163,344	<0.1%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2024 and not on the FY2025 list; up 56 since FY2022.
50	DAX Safety & Staffing Solutions, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,139,433	<0.1%	Rank history: not on the FY2021 list, #63 in FY2022, #29 in FY2024 and #54 in FY2025; up 13 since FY2022.
51	Wellpath LLC Top agencies DOJ (Department of Justice)	$1,128,665	<0.1%	Rank history: #24 in FY2021, #22 in FY2022 and not on the FY2024–FY2025 lists; down 29 since FY2022.
52	Akicita Cyber LLC Top agencies HHS (Department of Health and Human Services)	$1,049,689	<0.1%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2024 and #61 in FY2025; new.
53	Tech62 Inc. Top agencies VA (Department of Veterans Affairs)	$1,048,963	<0.1%	Rank history: #75 in FY2021, #83 in FY2022, #54 in FY2024 and #60 in FY2025; up 30 since FY2022.
54	Mednax Inc. Through Bexar Pediatric Surgery Associates, P.L.L.C. Top agencies Army (Department of the Army)	$1,038,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
55	Shelin, Agrawal, and Hyer, PLLC Top agencies USAF (Department of the Air Force)	$1,009,644	<0.1%	Rank history: #72 in FY2021, #73 in FY2022, #69 in FY2024 and #70 in FY2025; up 18 since FY2022.
56	Emory University Top agencies VA (Department of Veterans Affairs)	$1,003,565	<0.1%	Rank history: not on the FY2021 list, #76 in FY2022, #77 in FY2024 and not on the FY2025 list; up 20 since FY2022.
57	Progressive Radiology LLC Top agencies VA (Department of Veterans Affairs)	$995,600	<0.1%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2024 and #49 in FY2025; new.
58	University System of Maryland 2 awardees, including University of Maryland Diagnostic Imaging Specialists, P. A. and University of Maryland Neurology Associates Pa Top agencies VA (Department of Veterans Affairs)	$995,185	<0.1%	Rank history: #19 in FY2021, #41 in FY2022, #43 in FY2024 and not on the FY2025 list; down 17 since FY2022.
59	Cardiopulmonary Support Services, LLC Top agencies VA (Department of Veterans Affairs)	$991,086	<0.1%	Rank history: not on the FY2021 list, #92 in FY2022, #49 in FY2024 and not on the FY2025 list; up 33 since FY2022.
60	Wichita Radiological Group Pa Top agencies VA (Department of Veterans Affairs)	$982,636	<0.1%	Rank history: #69 in FY2021, #69 in FY2022, #60 in FY2024 and #62 in FY2025; up 9 since FY2022.
61	Circulatory Services Inc. Top agencies VA (Department of Veterans Affairs)	$978,860	<0.1%	Rank history: #70 in FY2021, #75 in FY2022, not on the FY2024 list and #67 in FY2025; up 14 since FY2022.
62	University of Minnesota Physicians Top agencies VA (Department of Veterans Affairs)	$962,482	<0.1%	Rank history: #12 in FY2021, #58 in FY2022, not on the FY2024 list and #63 in FY2025; down 4 since FY2022.
63	Dilligas Corp Top agencies VA (Department of Veterans Affairs)	$960,600	<0.1%	Rank history: #13 in FY2021, #20 in FY2022 and not on the FY2024–FY2025 lists; down 43 since FY2022.
64	Watanabe Enterprises LLC Top agencies VA (Department of Veterans Affairs)	$933,351	<0.1%	Rank history: #100 in FY2021, #72 in FY2022, #86 in FY2024 and #71 in FY2025; up 8 since FY2022.
65	Regency Consulting Inc Top agencies HHS (Department of Health and Human Services)	$931,219	<0.1%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2024 and #55 in FY2025; new.
66	Pinnacle Emergency Medical Group, PLLC Top agencies HHS (Department of Health and Human Services)	$925,125	<0.1%	Rank history: #26 in FY2021, #28 in FY2022 and not on the FY2024–FY2025 lists; down 38 since FY2022.
67	Health Carousel, LLC Through Next Medical Staffing LLC Top agencies VA (Department of Veterans Affairs)	$900,131	<0.1%	Rank history: #73 in FY2021, #82 in FY2022, #64 in FY2024 and not on the FY2025 list; up 15 since FY2022.
68	Posterity Group LLC Top agencies VA (Department of Veterans Affairs)	$889,416	<0.1%	Rank history: not on the FY2021 list, #96 in FY2022, #95 in FY2024 and not on the FY2025 list; up 28 since FY2022.
69	AMG Healthcare Services Inc. Top agencies DHA (Defense Health Agency)	$887,846	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
70	Clark. Narvarte & Vicks A Professional Corporation O'neill Top agencies VA (Department of Veterans Affairs)	$871,805	<0.1%	Rank history: #93 in FY2021, #89 in FY2022, not on the FY2024 list and #79 in FY2025; up 19 since FY2022.
71	Eskridge Enterprises, LLC Top agencies VA (Department of Veterans Affairs)	$847,453	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
72	Sentrillion Corporation Through Altos Federal Group Inc. Top agencies CSOSA (Court Services and Offender Supervision Agency)	$832,727	<0.1%	Rank history: #51 in FY2021, #45 in FY2022 and not on the FY2024–FY2025 lists; down 27 since FY2022.
73	Mayo Clinic Top agencies DOJ (Department of Justice)	$826,335	<0.1%	Rank history: #88 in FY2021, #84 in FY2022 and not on the FY2024–FY2025 lists; up 11 since FY2022.
74	Department of Medicine Medical Service Group At the Suny Health Science Center At Syracuse Inc. Top agencies VA (Department of Veterans Affairs)	$807,101	<0.1%	Rank history: #94 in FY2021, #79 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
75	University Physicians & Surgeons, Inc. Top agencies VA (Department of Veterans Affairs)	$765,325	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 108 since FY2022.
76	Wellmont Cardiology Services Top agencies VA (Department of Veterans Affairs)	$728,868	<0.1%	Rank history: #78 in FY2021, not on the FY2022 list, #68 in FY2024 and #78 in FY2025; up 32 since FY2022.
77	Wander Staffing LLC Top agencies HHS (Department of Health and Human Services)	$693,832	<0.1%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2024 and not on the FY2025 list; new.
78	Chloeta Holdings LLC Top agencies HHS (Department of Health and Human Services)	$688,854	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
79	Michael N. Clemenshaw, LLC Top agencies Army (Department of the Army)	$684,560	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
80	Iowa Digestive Disease Center, P.C. Top agencies VA (Department of Veterans Affairs)	$673,532	<0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2024 and not on the FY2025 list; up 30 since FY2022.
81	Jackson Healthcare, LLC Through Locumtenens.com, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$669,843	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 383 since FY2022.
82	Johnsons Consulting LLC Top agencies DLA (Defense Logistics Agency)	$624,576	<0.1%	Rank history: not on the FY2021 list, #93 in FY2022 and not on the FY2024–FY2025 lists; up 11 since FY2022.
83	Vascular Radiology Associates II Top agencies VA (Department of Veterans Affairs)	$622,491	<0.1%	Rank history: #82 in FY2021, #65 in FY2022 and not on the FY2024–FY2025 lists; down 18 since FY2022.
84	Laredo Technical Services, Inc. Top agencies USAF (Department of the Air Force)	$588,112	<0.1%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2024 and not on the FY2025 list; up 19 since FY2022.
85	Unmc Physicians Top agencies VA (Department of Veterans Affairs)	$584,201	<0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2024 and #82 in FY2025; new.
86	SI2 LLC Top agencies VA (Department of Veterans Affairs)	$573,655	<0.1%	Rank history: not on the FY2021 list, #71 in FY2022, not on the FY2024 list and #68 in FY2025; down 15 since FY2022.
87	Amol Katkar Pa Top agencies Army (Department of the Army)	$537,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 45 since FY2022.
88	The Johns Hopkins University Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$532,940	<0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2024 and not on the FY2025 list; up 37 since FY2022.
89	Iowa Pathology Associates, P.C. Top agencies VA (Department of Veterans Affairs)	$518,905	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 13 since FY2022.
90	Emergency Physicians Medical Group P.C. Through Vista Staffing Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$490,323	<0.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2024 and not on the FY2025 list; up 71 since FY2022.
91	SAI R Nimmagadda Top agencies SSA (Social Security Administration)	$487,408	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 56 since FY2022.
92	Workcare, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$474,070	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 132 since FY2022.
93	Chopra MD Arvind Top agencies SSA (Social Security Administration)	$474,044	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 25 since FY2022.
94	Nancy M Simpkins Top agencies SSA (Social Security Administration)	$438,591	<0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2024 and #72 in FY2025; up 63 since FY2022.
95	University of New Mexico Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$429,768	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 22 since FY2022.
96	Cardiothoracic & Vascular Surgical Associates SC Top agencies VA (Department of Veterans Affairs)	$429,558	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #96 in FY2025; up 280 since FY2022.
97	J L Minder, Prof. LLC Top agencies HHS (Department of Health and Human Services)	$424,250	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 18 since FY2022.
98	Onesourcepcs, LLC Top agencies USAF (Department of the Air Force)	$423,958	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 32 since FY2022.
99	University of Louisville Top agencies VA (Department of Veterans Affairs)	$419,805	<0.1%	Rank history: #83 in FY2021, #64 in FY2022 and not on the FY2024–FY2025 lists; down 35 since FY2022.
100	Amarillo Pathology Group L.L.P. Top agencies VA (Department of Veterans Affairs)	$419,285	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 28 since FY2022.

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 $3.53 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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