Top 100 Contractors in PSC Q: Medical Services, FY2024

Name: Top 100 Contractors in PSC Q: Medical Services, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 76% of FY2024 PSC Q contract dollars

Contract obligations: $46,710,777,867 Net of deobligations, by contracts coded PSC Q or a code under it
Contractors: 4,249 Parent companies with an obligation
Largest contractor: UnitedHealth Group Incorporated $18.4 billion, 37.4% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	UnitedHealth Group Incorporated 7 awardees, including Optum Public Sector Solutions, Inc., Optumserve Health Services, Inc. and Optumserve Technology Services, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Army (Department of the Army)	$18,430,183,055	37.4%	Rank history: #1 in FY2021, #5 in FY2022, #5 in FY2023 and #1 in FY2025; up 4 since FY2023.
2	Humana Government Business Inc. Top agencies DHA (Defense Health Agency)	$4,963,545,132	10.1%	Rank history: #33 in FY2021, not on the FY2022–FY2023 lists and #2 in FY2025; returned.
3	Optum Public Sector Solutions Inc Top agencies VA (Department of Veterans Affairs)	$3,313,591,136	6.7%	Rank history: not on the FY2021 list, #1 in FY2022, #1 in FY2023 and not on the FY2025 list; down 2 since FY2023.
4	Tcfii Valor Buyer LLC 2 awardees, including Humana Government Business Inc. and Valor Healthcare Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$3,192,170,664	6.5%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and not on the FY2025 list; down 2 since FY2023.
5	Health Net Federal Services, LLC Top agencies DHA (Defense Health Agency)	$2,506,187,607	5.1%	Rank history: not on the FY2021 list, #9 in FY2022, #13 in FY2023 and #6 in FY2025; up 8 since FY2023.
6	Leidos Holdings, Inc. Through QTC Medical Services Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) DHS (Department of Homeland Security)	$1,940,842,390	3.9%	Rank history: #6 in FY2021, #6 in FY2022, #4 in FY2023 and #4 in FY2025; down 2 since FY2023.
7	Centene Corporation Through Health Net Federal Services, LLC Top agencies DHA (Defense Health Agency)	$1,039,804,162	2.1%	Rank history: #3 in FY2021, #3 in FY2022, #3 in FY2023 and not on the FY2025 list; down 4 since FY2023.
8	Veterans Evaluation Services, Inc. Top agencies VA (Department of Veterans Affairs)	$825,702,976	1.7%	Rank history: #14 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
9	Loyal Source Government Services LLC 2 awardees Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$542,447,657	1.1%	Rank history: #18 in FY2021, #22 in FY2022, #11 in FY2023 and #7 in FY2025; up 2 since FY2023.
10	Express Scripts Inc. 2 awardees Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$524,395,922	1.1%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023 and #9 in FY2025; down 3 since FY2023.
11	Martins Point Health Care Inc. Top agencies DHA (Defense Health Agency)	$424,200,000	0.9%	Rank history: #9 in FY2021, #12 in FY2022, #9 in FY2023 and #12 in FY2025; down 2 since FY2023.
12	Triwest Healthcare Alliance Corp Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$399,725,999	0.8%	Rank history: #4 in FY2021, #13 in FY2022, #14 in FY2023 and #3 in FY2025; up 2 since FY2023.
13	Livanta LLC Top agencies HHS (Department of Health and Human Services)	$314,839,247	0.6%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2023 and #83 in FY2025; up 36 since FY2023.
14	Maximus Inc. Through Veterans Evaluation Services, Inc. Top agencies VA (Department of Veterans Affairs)	$312,263,544	0.6%	Rank history: #19 in FY2021, #8 in FY2022, #6 in FY2023 and not on the FY2025 list; down 8 since FY2023.
15	Keystone Peer Review Organization, LLC Through Ohio Kepro, LLC Top agencies HHS (Department of Health and Human Services)	$298,576,419	0.6%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2023 and not on the FY2025 list; up 40 since FY2023.
16	Johns Hopkins University Through The Johns Hopkins Medical Services Corporation Top agencies DHA (Defense Health Agency)	$285,750,000	0.6%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2025; new.
17	United Concordia Companies, Inc. Top agencies DHA (Defense Health Agency)	$271,632,263	0.6%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; new.
18	The Johns Hopkins Health System Corporation Through The Johns Hopkins Medical Services Corporation Top agencies DHA (Defense Health Agency)	$204,300,000	0.4%	Rank history: #10 in FY2021, #11 in FY2022, #8 in FY2023 and not on the FY2025 list; down 10 since FY2023.
19	STG International, Inc. Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$195,403,184	0.4%	Rank history: #26 in FY2021, #18 in FY2022, #16 in FY2023 and #32 in FY2025; down 3 since FY2023.
20	Pacmed Clinics Top agencies DHA (Defense Health Agency)	$178,900,000	0.4%	Rank history: #22 in FY2021, #19 in FY2022, #17 in FY2023 and #15 in FY2025; down 3 since FY2023.
21	International SOS Government Services Inc. 3 awardees, including International Sos Assistance, Inc. Top agencies DHA (Defense Health Agency) Navy (Department of the Navy) USDA (Department of Agriculture)	$163,416,032	0.3%	Rank history: #30 in FY2021, #28 in FY2022, #19 in FY2023 and #16 in FY2025; down 2 since FY2023.
22	Brighton Marine, Inc. Top agencies DHA (Defense Health Agency)	$158,050,000	0.3%	Rank history: #25 in FY2021, #23 in FY2022, #18 in FY2023 and #18 in FY2025; down 4 since FY2023.
23	Naphcare LLC Top agencies DOJ (Department of Justice)	$147,857,070	0.3%	Rank history: #27 in FY2021, #25 in FY2022, #21 in FY2023 and #17 in FY2025; down 2 since FY2023.
24	Christus Health Top agencies DHA (Defense Health Agency)	$146,689,344	0.3%	Rank history: #28 in FY2021, #26 in FY2022, #20 in FY2023 and #19 in FY2025; down 4 since FY2023.
25	Svcmc, Inc. Top agencies DHA (Defense Health Agency)	$127,622,100	0.3%	Rank history: #29 in FY2021, #31 in FY2022, #25 in FY2023 and #22 in FY2025; unchanged since FY2023.
26	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	0.3%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2025; new.
27	Highmark Inc. Through United Concordia Companies, Inc. Top agencies DHA (Defense Health Agency)	$113,179,969	0.2%	Rank history: #8 in FY2021, #10 in FY2022, #10 in FY2023 and not on the FY2025 list; down 17 since FY2023.
28	Laboratory Corporation of America 9 awardees, including Center for Disease Detection, LLC, Labcorp Oklahoma Inc. and Medtox Laboratories Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) Army (Department of the Army)	$110,502,110	0.2%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2023 and #21 in FY2025; down 4 since FY2023.
29	KBR Wyle Services, LLC 3 awardees, including KBR Services, LLC Top agencies USAF (Department of the Air Force) DOS (Department of State) Navy (Department of the Navy)	$105,508,377	0.2%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2025; new.
30	Enterprise Resource Planning International, LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$104,031,373	0.2%	Rank history: #41 in FY2021, #38 in FY2022, #29 in FY2023 and #23 in FY2025; down 1 since FY2023.
31	Quest Diagnostics Incorporated 7 awardees, including Diagnostic Laboratory of Oklahoma LLC, Quest Diagnostics Clinical Laboratories, Inc. and Ameripath Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$94,513,672	0.2%	Rank history: #23 in FY2021, #17 in FY2022, #22 in FY2023 and #47 in FY2025; down 9 since FY2023.
32	Dilligas Corp Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$81,195,620	0.2%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023 and #35 in FY2025; up 14 since FY2023.
33	Spectrum Healthcare Resources, Inc. Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$78,388,188	0.2%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2025; up 170 since FY2023.
34	Wellpath LLC Top agencies DOJ (Department of Justice)	$66,454,446	0.1%	Rank history: #56 in FY2021, #57 in FY2022, #35 in FY2023 and #29 in FY2025; up 1 since FY2023.
35	Luke & Associates, Inc. 2 awardees Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$64,259,137	0.1%	Rank history: #31 in FY2021, #33 in FY2022, #31 in FY2023 and #46 in FY2025; down 4 since FY2023.
36	Donald L. Mooney Enterprises, LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$64,142,744	0.1%	Rank history: #54 in FY2021, #53 in FY2022, #33 in FY2023 and #90 in FY2025; down 3 since FY2023.
37	Seven Corners Inc. Top agencies DOJ (Department of Justice)	$55,426,801	0.1%	Rank history: #44 in FY2021, #44 in FY2022, #38 in FY2023 and #33 in FY2025; up 1 since FY2023.
38	Spectrum Services Group Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) DOJ (Department of Justice)	$51,267,937	0.1%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023 and #44 in FY2025; up 26 since FY2023.
39	Decypher Technologies Ltd Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$51,209,342	0.1%	Rank history: #86 in FY2021, #82 in FY2022, #69 in FY2023 and #28 in FY2025; up 30 since FY2023.
40	The Arora Group, Inc. Top agencies DHA (Defense Health Agency) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$47,014,024	0.1%	Rank history: #46 in FY2021, #35 in FY2022, #36 in FY2023 and #36 in FY2025; down 4 since FY2023.
41	Wisconsin Physicians Service Insurance Corp. Top agencies DHA (Defense Health Agency)	$46,858,113	0.1%	Rank history: #37 in FY2021, #42 in FY2022, #47 in FY2023 and #52 in FY2025; up 6 since FY2023.
42	Ansible Government Solutions LLC Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$46,345,209	0.1%	Rank history: #64 in FY2021, #68 in FY2022, #39 in FY2023 and #45 in FY2025; down 3 since FY2023.
43	Distinctive Health Spectrum Care JV LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$43,398,785	0.1%	Rank history: #34 in FY2021, #34 in FY2022, #30 in FY2023 and not on the FY2025 list; down 13 since FY2023.
44	University of Massachusetts Through University of Massachusetts Medical School Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services)	$42,516,231	0.1%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
45	Sterling Medical Corporation Through Sterling Medical Associates, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USAF (Department of the Air Force)	$40,865,879	0.1%	Rank history: #43 in FY2021, #67 in FY2022, #40 in FY2023 and not on the FY2025 list; down 5 since FY2023.
46	Icahn School of Medicine at Mount Sinai 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$40,311,942	0.1%	Rank history: #76 in FY2021, #94 in FY2022, #57 in FY2023 and not on the FY2025 list; up 11 since FY2023.
47	Complete Mobile Dentistry Inc. Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$39,761,943	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
48	Tribal Health, LLC Top agencies HHS (Department of Health and Human Services)	$38,928,619	0.1%	Rank history: #62 in FY2021, #49 in FY2022, #48 in FY2023 and #51 in FY2025; unchanged since FY2023.
49	Matrix Providers Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$37,870,445	0.1%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2025; up 95 since FY2023.
50	Magnificus Corporation Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$36,353,367	0.1%	Rank history: #52 in FY2021, #51 in FY2022, #32 in FY2023 and #37 in FY2025; down 18 since FY2023.
51	Bay Area Anesthesia LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$35,811,457	0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and #63 in FY2025; up 8 since FY2023.
52	Millbrook Support Services Inc Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$33,748,969	0.1%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2023 and not on the FY2025 list; up 2 since FY2023.
53	International Sos Government Medical Services, Inc. Top agencies Army (Department of the Army)	$33,143,692	0.1%	Rank history: not on the FY2021 list, #72 in FY2022, #34 in FY2023 and not on the FY2025 list; down 19 since FY2023.
54	Alphabet Inc. Through Verily Life Sciences LLC Top agencies HHS (Department of Health and Human Services)	$31,600,230	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 102 since FY2023.
55	New York City Health and Hospitals Corporation 2 awardees Top agencies HHS (Department of Health and Human Services)	$31,567,041	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and #62 in FY2025; up 21 since FY2023.
56	Acuity-Chs, LLC Top agencies DHS (Department of Homeland Security) DHRA (Defense Human Resources Activity) Navy (Department of the Navy)	$31,191,882	0.1%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; new.
57	Noridian Healthcare Solutions, LLC Top agencies HHS (Department of Health and Human Services)	$30,063,725	0.1%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2025; new.
58	Akahi Ingenesis Partners LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$29,346,734	0.1%	Rank history: #70 in FY2021, #73 in FY2022, #61 in FY2023 and #48 in FY2025; up 3 since FY2023.
59	The Research Foundation for the State University of New York Top agencies HHS (Department of Health and Human Services)	$29,232,021	0.1%	Rank history: not on the FY2021–FY2023 lists and #99 in FY2025; new.
60	Giacare & Medtrust JV LLC Top agencies Army (Department of the Army)	$28,147,228	0.1%	Rank history: not on the FY2021 list, #56 in FY2022, #81 in FY2023 and #72 in FY2025; up 21 since FY2023.
61	The Royster Group, Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$27,058,535	0.1%	Rank history: #95 in FY2021, #93 in FY2022, #84 in FY2023 and #85 in FY2025; up 23 since FY2023.
62	Teamstaff Inc. Through DLH Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$26,537,159	0.1%	Rank history: #48 in FY2021, #36 in FY2022, #28 in FY2023 and not on the FY2025 list; down 34 since FY2023.
63	Teya Enterprises LLC Top agencies DHA (Defense Health Agency)	$25,816,618	0.1%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and not on the FY2025 list; up 8 since FY2023.
64	The University of North Texas Health Science Center At Fort Worth Top agencies DOJ (Department of Justice)	$25,374,582	0.1%	Rank history: #63 in FY2021, not on the FY2022 list, #87 in FY2023 and #67 in FY2025; up 23 since FY2023.
65	Servefed Inc. Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration) DOJ (Department of Justice)	$25,212,300	0.1%	Rank history: not on the FY2021 list, #79 in FY2022, #80 in FY2023 and #71 in FY2025; up 15 since FY2023.
66	Blue Cross and Blue Shield of South Carolina Through Karna LLC Top agencies HHS (Department of Health and Human Services)	$24,627,656	<0.1%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and #54 in FY2025; up 16 since FY2023.
67	Integrated Medical Solutions, LLC Top agencies DOJ (Department of Justice)	$23,808,730	<0.1%	Rank history: #60 in FY2021, #71 in FY2022, #67 in FY2023 and #70 in FY2025; unchanged since FY2023.
68	Roche Diabetes Care Inc Through Foundation Medicine, Inc. Top agencies VA (Department of Veterans Affairs)	$23,245,082	<0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and not on the FY2025 list; up 26 since FY2023.
69	Primary Care Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$23,003,684	<0.1%	Rank history: #99 in FY2021, #74 in FY2022, #66 in FY2023 and #68 in FY2025; down 3 since FY2023.
70	Prairie Band Health Services Inc. Top agencies HHS (Department of Health and Human Services)	$22,724,120	<0.1%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2025; up 101 since FY2023.
71	Dawson Cms, LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$22,637,962	<0.1%	Rank history: not on the FY2021–FY2023 lists and #53 in FY2025; up 61 since FY2023.
72	Sedgwick Public Sector LLC Through Managed Care Advisors, Inc. Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$22,592,050	<0.1%	Rank history: not on the FY2021 list, #84 in FY2022, #63 in FY2023 and not on the FY2025 list; down 9 since FY2023.
73	Readiforce Government Solutions LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$22,580,237	<0.1%	Rank history: #100 in FY2021, #92 in FY2022, #62 in FY2023 and #64 in FY2025; down 11 since FY2023.
74	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$21,773,500	<0.1%	Rank history: #35 in FY2021, #32 in FY2022, #26 in FY2023 and not on the FY2025 list; down 48 since FY2023.
75	Four Winds Staffing LLC Top agencies HHS (Department of Health and Human Services)	$21,650,324	<0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2025; up 50 since FY2023.
76	Acuity - CHS Middle East, LLC Top agencies DOS (Department of State)	$21,309,025	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
77	Federal Staffing Resources LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$21,129,932	<0.1%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023 and not on the FY2025 list; down 3 since FY2023.
78	The Chenega Corporation 4 awardees, including Chenega Tri-Services, LLC, Chenega Reliable Services LLC and Chenega Healthcare Services LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency) DOE (Department of Energy)	$20,858,919	<0.1%	Rank history: #71 in FY2021, #70 in FY2022, #50 in FY2023 and not on the FY2025 list; down 28 since FY2023.
79	Sanofi Pasteur Inc. Through Sanofi Vaccines US Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$20,765,316	<0.1%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2025; new.
80	Saratoga Medical Center, Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$20,694,002	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 21 since FY2023.
81	Goodwill Industries of San Antonio Contract Services Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$20,618,911	<0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and #88 in FY2025; up 17 since FY2023.
82	Scandinavian Biopharma Holding AB Top agencies DHA (Defense Health Agency)	$20,479,340	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 162 since FY2023.
83	CVS Health Corporation 3 awardees, including CVS Pharmacy, Inc. and D & R Pharmaceutical Services, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$20,193,265	<0.1%	Rank history: #40 in FY2021, #14 in FY2022, #23 in FY2023 and not on the FY2025 list; down 60 since FY2023.
84	Centralcare, Incorporated Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$20,032,170	<0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023 and #75 in FY2025; up 15 since FY2023.
85	Wake Forest University Through Wake Forest University Health Sciences Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$19,971,227	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	Potomac Healthcare Solutions, LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$19,958,004	<0.1%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2025; up 26 since FY2023.
87	Gigagen Inc. Top agencies HHS (Department of Health and Human Services)	$19,633,226	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
88	Potomac Valor Healthcare 2, LLC Top agencies VA (Department of Veterans Affairs)	$18,807,027	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 180 since FY2023.
89	Chenega Tri-Services, LLC Top agencies Army (Department of the Army)	$18,469,423	<0.1%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2025; new.
90	Vetmed Group LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$18,224,669	<0.1%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2025; up 312 since FY2023.
91	SNA International LLC Top agencies OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service)	$17,407,755	<0.1%	Rank history: not on the FY2021–FY2023 lists and #100 in FY2025; up 25 since FY2023.
92	J Allen and Associates of Texas, LLC Top agencies DOJ (Department of Justice)	$16,589,231	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 74 since FY2023.
93	Magellan Federal Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) DHRA (Defense Human Resources Activity)	$16,485,620	<0.1%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; new.
94	Giamed Alliance JV LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$16,464,157	<0.1%	Rank history: #77 in FY2021, not on the FY2022 list, #90 in FY2023 and not on the FY2025 list; down 4 since FY2023.
95	Prime Physicians PLLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) SSA (Social Security Administration)	$16,291,045	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 283 since FY2023.
96	Cognito Systems LLC Top agencies Army (Department of the Army)	$16,150,361	<0.1%	Rank history: not on the FY2021–FY2023 lists and #89 in FY2025; up 28 since FY2023.
97	Cherokee Nation Integrated Health, L.L.C. Top agencies DHA (Defense Health Agency) DHS (Department of Homeland Security)	$15,933,144	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 93 since FY2023.
98	Dt-Trak Consulting, Inc. Top agencies HHS (Department of Health and Human Services)	$15,856,938	<0.1%	Rank history: not on the FY2021–FY2023 lists and #91 in FY2025; up 8 since FY2023.
99	Katmai Health Services LLC Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency)	$15,688,101	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 28 since FY2023.
100	Valor Network, Inc. Top agencies DHA (Defense Health Agency) DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$15,371,330	<0.1%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2025; up 21 since FY2023.

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100 of 4,249 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC Q

Code	Net obligations	Largest contractor
Q2 General Health Care Services	$35,846,363,074	UnitedHealth Group Incorporated
Q4 Nursing, Nursing Home, Eval/Screen	$6,522,020,656	Leidos Holdings, Inc.
Q5 Medical, Dental, and Surgical Services	$1,569,319,162	United Concordia Companies, Inc.
Q9 Other Medical Services	$1,469,621,612	Triwest Healthcare Alliance Corp
Q3 Laboratory Testing Services	$489,863,971	Laboratory Corporation of America
Q8 Clerical Medical Support	$122,463,978	UnitedHealth Group Incorporated
Q6 Certified Medical Support	$77,824,829	Goodwill Industries of San Antonio Contract Services
Q7 Specialized Technical/ Medical Support	-$23,862,379	CVS Health Corporation

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 $49.3 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

Who were the top 10 PSC Q contractors in FY2024?

1. UnitedHealth Group Incorporated ($18.4B), 2. Humana Government Business Inc. ($4.96B), 3. Optum Public Sector Solutions Inc ($3.31B), 4. Tcfii Valor Buyer LLC ($3.19B), 5. Health Net Federal Services, LLC ($2.51B), 6. Leidos Holdings, Inc. ($1.94B), 7. Centene Corporation ($1.04B), 8. Veterans Evaluation Services, Inc. ($826M), 9. Loyal Source Government Services LLC ($542M), 10. Express Scripts Inc. ($524M).

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