Top 100 Contractors in PSC Q: Medical Services, FY2021

Name: Top 100 Contractors in PSC Q: Medical Services, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 68% of FY2021 PSC Q contract dollars

Contract obligations: $37,977,739,310 Net of deobligations, by contracts coded PSC Q or a code under it
Contractors: 4,664 Parent companies with an obligation
Largest contractor: UnitedHealth Group Incorporated $9.59 billion, 24.3% 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 6 awardees, including Optum Public Sector Solutions, Inc., Optumserve Health Services, Inc. and United Healthcare Services,Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$9,589,444,909	24.3%	Rank history: #5 in FY2022, #5 in FY2023, #1 in FY2024 and #1 in FY2025; up 3 since FY2020.
2	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) Army (Department of the Army)	$7,085,317,820	17.9%	Rank history: #2 in FY2022, #2 in FY2023, #4 in FY2024 and not on the FY2025 list; unchanged since FY2020.
3	Centene Corporation Through Health Net Federal Services, LLC Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$3,225,257,977	8.2%	Rank history: #3 in FY2022, #3 in FY2023, #7 in FY2024 and not on the FY2025 list; unchanged since FY2020.
4	Triwest Healthcare Alliance Corp Top agencies VA (Department of Veterans Affairs)	$3,081,764,460	7.8%	Rank history: #13 in FY2022, #14 in FY2023, #12 in FY2024 and #3 in FY2025; down 3 since FY2020.
5	Walgreen Co. Top agencies HHS (Department of Health and Human Services)	$898,993,762	2.3%	Rank history: #4 in FY2022 and not on the FY2023–FY2025 lists; up 21 since FY2020.
6	Leidos Holdings, Inc. Through QTC Medical Services Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) DOJ (Department of Justice)	$876,507,818	2.2%	Rank history: #6 in FY2022, #4 in FY2023, #6 in FY2024 and #4 in FY2025; down 1 since FY2020.
7	Accredo Health Group Inc. 2 awardees, including Express Scripts Inc. Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$743,274,894	1.9%	Rank history: #7 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
8	Highmark Inc. 2 awardees, including United Concordia Companies, Inc. and Allegheny General Hospital Top agencies DHA (Defense Health Agency) DOJ (Department of Justice)	$436,642,051	1.1%	Rank history: #10 in FY2022, #10 in FY2023, #27 in FY2024 and not on the FY2025 list; up 1 since FY2020.
9	Martins Point Health Care Inc. Top agencies DHA (Defense Health Agency)	$392,296,666	1.0%	Rank history: #12 in FY2022, #9 in FY2023, #11 in FY2024 and #12 in FY2025; up 1 since FY2020.
10	The Johns Hopkins Health System Corporation 3 awardees, including The Johns Hopkins Medical Services Corporation Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$391,962,479	1.0%	Rank history: #11 in FY2022, #8 in FY2023, #18 in FY2024 and not on the FY2025 list; down 2 since FY2020.
11	Rite Aid Corporation Through Rite Aid Hdqtrs. Corp. Top agencies HHS (Department of Health and Human Services)	$376,079,968	1.0%	Rank history: #27 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
12	E3Health Solutions, LLC Top agencies HHS (Department of Health and Human Services)	$375,405,960	0.9%	Rank history: #24 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
13	American Medical Response Inc. 4 awardees, including American Medical Response Mid-Atlantic, Inc., Lifefleet Southeast Inc. and American Medical Response of Colorado, Inc. Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) Army (Department of the Army)	$355,378,852	0.9%	Rank history: #21 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
14	Veterans Evaluation Services, Inc. Top agencies VA (Department of Veterans Affairs)	$297,000,000	0.8%	Rank history: not on the FY2022–FY2023 lists, #8 in FY2024 and not on the FY2025 list; down 7 since FY2020.
15	Davita Inc. 7 awardees, including Renal Treatment Centers-West, Inc., DVA Renal Healthcare Inc. and Total Renal Care, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) USAF (Department of the Air Force)	$283,395,891	0.7%	Rank history: #16 in FY2022, #15 in FY2023, not on the FY2024 list and #10 in FY2025; down 4 since FY2020.
16	Fresenius USA Inc. 8 awardees, including Fresenius Medical Care Holdings Inc., Bio-Medical Applications of Louisiana, LLC and Bio-Medical Applications of Maryland, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$277,166,082	0.7%	Rank history: #15 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
17	Clinical Enterprise, LLC Top agencies Army (Department of the Army)	$274,862,880	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
18	Loyal Source Government Services LLC 2 awardees Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$236,163,438	0.6%	Rank history: #22 in FY2022, #11 in FY2023, #9 in FY2024 and #7 in FY2025; down 1 since FY2020.
19	Maximus Inc. Through Veterans Evaluation Services, Inc. Top agencies VA (Department of Veterans Affairs)	$225,204,497	0.6%	Rank history: #8 in FY2022, #6 in FY2023, #14 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
20	Battelle Memorial Institute Top agencies Army (Department of the Army) HHS (Department of Health and Human Services)	$220,198,474	0.6%	Rank history: not on the FY2022–FY2025 lists; up 179 since FY2020.
21	Laboratory Corporation of America Holdings 10 awardees, including Laboratory Corporation of America, Monogram Biosciences, Inc. and Esoterix Genetic Laboratories LLC Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$200,503,341	0.5%	Rank history: #20 in FY2022, #70 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
22	Pacmed Clinics Top agencies DHA (Defense Health Agency)	$172,063,913	0.4%	Rank history: #19 in FY2022, #17 in FY2023, #20 in FY2024 and #15 in FY2025; down 6 since FY2020.
23	Quest Diagnostics Incorporated 12 awardees, including Quest Diagnostics Nichols Institute, Quest Diagnostics Clinical Laboratories, Inc. and Ameripath Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$161,817,138	0.4%	Rank history: #17 in FY2022, #22 in FY2023, #31 in FY2024 and #47 in FY2025; unchanged since FY2020.
24	Perkinelmer Inc. 2 awardees, including Revvity Health Sciences, Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$157,017,731	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
25	Brighton Marine, Inc. Top agencies DHA (Defense Health Agency)	$156,107,654	0.4%	Rank history: #23 in FY2022, #18 in FY2023, #22 in FY2024 and #18 in FY2025; down 6 since FY2020.
26	STG International, Inc. Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$154,636,718	0.4%	Rank history: #18 in FY2022, #16 in FY2023, #19 in FY2024 and #32 in FY2025; down 11 since FY2020.
27	Naphcare LLC Top agencies DOJ (Department of Justice)	$149,834,465	0.4%	Rank history: #25 in FY2022, #21 in FY2023, #23 in FY2024 and #17 in FY2025; down 7 since FY2020.
28	Christus Health 2 awardees, including Christus Health Ark-La-Tex Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$135,756,054	0.3%	Rank history: #26 in FY2022, #20 in FY2023, #24 in FY2024 and #19 in FY2025; down 7 since FY2020.
29	Svcmc, Inc. Top agencies DHA (Defense Health Agency)	$114,092,639	0.3%	Rank history: #31 in FY2022, #25 in FY2023, #25 in FY2024 and #22 in FY2025; down 5 since FY2020.
30	International SOS Government Services Inc. 3 awardees, including International Sos PTE Ltd Top agencies DHA (Defense Health Agency) USDA (Department of Agriculture) DODEA (Department of Defense Education Activity)	$108,358,127	0.3%	Rank history: #28 in FY2022, #19 in FY2023, #21 in FY2024 and #16 in FY2025; down 5 since FY2020.
31	Luke & Associates, Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$108,115,396	0.3%	Rank history: #33 in FY2022, #31 in FY2023, #35 in FY2024 and #46 in FY2025; up 27 since FY2020.
32	Heritage Health Solutions, Inc. Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs)	$103,091,129	0.3%	Rank history: not on the FY2022 list, #27 in FY2023, not on the FY2024 list and #24 in FY2025; down 4 since FY2020.
33	Humana Government Business Inc. Top agencies DHA (Defense Health Agency)	$100,328,573	0.3%	Rank history: not on the FY2022–FY2023 lists, #2 in FY2024 and #2 in FY2025; up 363 since FY2020.
34	Distinctive Health Spectrum Care JV LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$99,467,479	0.3%	Rank history: #34 in FY2022, #30 in FY2023, #43 in FY2024 and not on the FY2025 list; up 15 since FY2020.
35	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies USSOCOM (United States Special Operations Command)	$93,702,420	0.2%	Rank history: #32 in FY2022, #26 in FY2023, #74 in FY2024 and not on the FY2025 list; down 6 since FY2020.
36	Team Health Inc. 2 awardees, including Spectrum Healthcare Resources, Inc. and Spectrum Federal Solutions LLC Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$77,300,548	0.2%	Rank history: #40 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; down 9 since FY2020.
37	Wisconsin Physicians Service Insurance Corp. Top agencies DHA (Defense Health Agency)	$72,167,837	0.2%	Rank history: #42 in FY2022, #47 in FY2023, #41 in FY2024 and #52 in FY2025; down 5 since FY2020.
38	AB Staffing Solutions LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Treasury (Department of the Treasury)	$72,069,067	0.2%	Rank history: #37 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
39	Noridian Mutual Insurance Company Through Noridian Healthcare Solutions, LLC Top agencies HHS (Department of Health and Human Services)	$71,774,188	0.2%	Rank history: #48 in FY2022, #51 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
40	CVS Health Corporation 3 awardees, including Minuteclinic, L.L.C. and CVS Pharmacy, Inc. Top agencies HHS (Department of Health and Human Services) EOP (Executive Office of the President) USDA (Department of Agriculture)	$70,944,371	0.2%	Rank history: #14 in FY2022, #23 in FY2023, #83 in FY2024 and not on the FY2025 list; up 15 since FY2020.
41	Enterprise Resource Planning International, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) DHA (Defense Health Agency)	$70,926,745	0.2%	Rank history: #38 in FY2022, #29 in FY2023, #30 in FY2024 and #23 in FY2025; down 8 since FY2020.
42	Matrix Providers Inc. Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) Army (Department of the Army)	$68,558,169	0.2%	Rank history: #41 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
43	Sterling Medical Corporation 2 awardees, including Sterling Medical Associates, Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) Army (Department of the Army)	$68,530,847	0.2%	Rank history: #67 in FY2022, #40 in FY2023, #45 in FY2024 and not on the FY2025 list; up 9 since FY2020.
44	Seven Corners Inc. Top agencies DOJ (Department of Justice)	$68,276,563	0.2%	Rank history: #44 in FY2022, #38 in FY2023, #37 in FY2024 and #33 in FY2025; down 8 since FY2020.
45	Crassociates, Inc. 2 awardees, including Medmark Veteran Services LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$67,663,119	0.2%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
46	The Arora Group, Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$66,671,190	0.2%	Rank history: #35 in FY2022, #36 in FY2023, #40 in FY2024 and #36 in FY2025; up 7 since FY2020.
47	Provizor Federal Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$66,467,718	0.2%	Rank history: #58 in FY2022, #68 in FY2023 and not on the FY2024–FY2025 lists; up 38 since FY2020.
48	Teamstaff Inc. 2 awardees, including DLH Solutions Inc. and Social & Scientific Systems, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$59,646,558	0.2%	Rank history: #36 in FY2022, #28 in FY2023, #62 in FY2024 and not on the FY2025 list; down 6 since FY2020.
49	The Johns Hopkins Medical Services Corporation Top agencies DHA (Defense Health Agency)	$55,643,234	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
50	Ghost RX Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DOI (Department of the Interior)	$55,163,515	0.1%	Rank history: #46 in FY2022 and not on the FY2023–FY2025 lists; up 50 since FY2020.
51	Millbrook Support Services Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$51,607,023	0.1%	Rank history: #43 in FY2022 and not on the FY2023–FY2025 lists; up 79 since FY2020.
52	Magnificus Corporation Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) Army (Department of the Army)	$48,279,345	0.1%	Rank history: #51 in FY2022, #32 in FY2023, #50 in FY2024 and #37 in FY2025; down 1 since FY2020.
53	Rapid Temps, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$48,057,729	0.1%	Rank history: #47 in FY2022, #79 in FY2023 and not on the FY2024–FY2025 lists; up 83 since FY2020.
54	Donald L. Mooney Enterprises, LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army) USAF (Department of the Air Force)	$45,620,266	0.1%	Rank history: #53 in FY2022, #33 in FY2023, #36 in FY2024 and #90 in FY2025; up 9 since FY2020.
55	Aegis Sciences Corporation 2 awardees Top agencies HHS (Department of Health and Human Services)	$43,624,646	0.1%	Rank history: not on the FY2022–FY2025 lists; up 160 since FY2020.
56	Wellpath LLC Top agencies DOJ (Department of Justice)	$43,171,376	0.1%	Rank history: #57 in FY2022, #35 in FY2023, #34 in FY2024 and #29 in FY2025; down 17 since FY2020.
57	The Broad Institute, Inc. 2 awardees Top agencies HHS (Department of Health and Human Services)	$42,167,319	0.1%	Rank history: not on the FY2022–FY2025 lists; up 228 since FY2020.
58	University of Massachusetts Through University of Massachusetts Medical School Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services)	$41,428,652	0.1%	Rank history: #60 in FY2022, #45 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2020.
59	Dilligas Corp Top agencies Army (Department of the Army) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$41,239,102	0.1%	Rank history: #59 in FY2022 and not on the FY2023–FY2025 lists; up 18 since FY2020.
60	Integrated Medical Solutions, LLC Top agencies DOJ (Department of Justice)	$40,162,145	0.1%	Rank history: #71 in FY2022, #67 in FY2023, #67 in FY2024 and #70 in FY2025; down 4 since FY2020.
61	AMN Healthcare Services Incorporated 5 awardees, including AMN Healthcare Inc., AMN Healthcare Locum Tenens, Inc. and AMN Healthcare Allied, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$37,669,173	0.1%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; up 418 since FY2020.
62	Tribal Health, LLC Top agencies HHS (Department of Health and Human Services)	$35,665,892	0.1%	Rank history: #49 in FY2022, #48 in FY2023, #48 in FY2024 and #51 in FY2025; up 17 since FY2020.
63	The University of North Texas Health Science Center At Fort Worth Top agencies DOJ (Department of Justice) Army (Department of the Army)	$34,582,241	0.1%	Rank history: not on the FY2022 list, #87 in FY2023, #64 in FY2024 and #67 in FY2025; down 25 since FY2020.
64	Ansible Government Solutions LLC Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$33,857,174	0.1%	Rank history: #68 in FY2022, #39 in FY2023, #42 in FY2024 and #45 in FY2025; up 9 since FY2020.
65	Fulgent Genetics, Inc. Through Fulgent Therapeutics LLC Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$33,283,337	0.1%	Rank history: not on the FY2022–FY2025 lists; up 204 since FY2020.
66	National Marrow Donor Program Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$30,494,596	0.1%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
67	CHS Middle East LLC 2 awardees, including Acuity-Chs, LLC and Acuity - CHS Middle East, LLC Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior) DOS (Department of State)	$30,236,128	0.1%	Rank history: #45 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; up 123 since FY2020.
68	University of Kentucky Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs)	$29,925,290	0.1%	Rank history: not on the FY2022 list, #95 in FY2023 and not on the FY2024–FY2025 lists; up 78 since FY2020.
69	9940 West Union Hills Drive Operations LLC 68 awardees, including 10 Woodland Drive Operations LLC, Peak Medical Colorado NO. 2, LLC and 279 Cabot Street Operations LLC Top agencies VA (Department of Veterans Affairs)	$29,648,996	0.1%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
70	Akahi Ingenesis Partners LLC Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) Army (Department of the Army)	$29,330,983	0.1%	Rank history: #73 in FY2022, #61 in FY2023, #58 in FY2024 and #48 in FY2025; up 31 since FY2020.
71	The Chenega Corporation 7 awardees, including Chenega Tri-Services, LLC, Chenega Healthcare Services LLC and Chenega Reliable Services LLC Top agencies Army (Department of the Army) DOE (Department of Energy) Commerce (Department of Commerce)	$29,019,981	0.1%	Rank history: #70 in FY2022, #50 in FY2023, #78 in FY2024 and not on the FY2025 list; down 1 since FY2020.
72	Roche Holding AG 3 awardees, including Foundation Medicine, Inc., Roche Diagnostics Corporation and Ventana Medical Systems, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$28,732,484	0.1%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; up 343 since FY2020.
73	Luminostics Inc. Top agencies HHS (Department of Health and Human Services)	$28,621,000	0.1%	Rank history: not on the FY2022–FY2025 lists; up 76 since FY2020.
74	Dialysis Clinic, Inc. Top agencies VA (Department of Veterans Affairs)	$28,372,482	0.1%	Rank history: #75 in FY2022, #65 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
75	Loma Linda University 2 awardees, including Loma Linda University Medical Center Top agencies VA (Department of Veterans Affairs)	$27,831,522	0.1%	Rank history: not on the FY2022–FY2025 lists; up 50 since FY2020.
76	Icahn School of Medicine at Mount Sinai 2 awardees, including Mount Sinai Hospital Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$27,166,866	0.1%	Rank history: #94 in FY2022, #57 in FY2023, #46 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
77	Giamed Alliance JV LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$27,057,339	0.1%	Rank history: not on the FY2022 list, #90 in FY2023, #94 in FY2024 and not on the FY2025 list; up 12 since FY2020.
78	First Nations Community Health Source Inc. Top agencies HHS (Department of Health and Human Services)	$26,651,639	0.1%	Rank history: not on the FY2022–FY2025 lists; up 99 since FY2020.
79	Vesa Health & Technology Inc. Top agencies DHS (Department of Homeland Security) DHA (Defense Health Agency) USAF (Department of the Air Force)	$26,484,549	0.1%	Rank history: #98 in FY2022 and not on the FY2023–FY2025 lists; down 15 since FY2020.
80	Infinity Biologix LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$25,307,970	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
81	University of Texas System 6 awardees, including The University of Texas Southwestern Medical Center, University of Texas Health Science Center of San Antonio and The Univeristy of Texas M.d. Anderson Cancer Center Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Army (Department of the Army)	$24,398,832	0.1%	Rank history: #81 in FY2022, #73 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
82	Microgem US Inc. Top agencies HHS (Department of Health and Human Services)	$24,369,230	0.1%	Rank history: not on the FY2022–FY2025 lists; up 23 since FY2020.
83	Qorvo, Inc. Through Qorvo Biotechnologies LLC Top agencies HHS (Department of Health and Human Services)	$24,360,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	Quidel Corp Top agencies HHS (Department of Health and Human Services)	$24,174,950	0.1%	Rank history: not on the FY2022–FY2025 lists; down 49 since FY2020.
85	Federal Staffing Resources, LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$24,139,263	0.1%	Rank history: #95 in FY2022 and not on the FY2023–FY2025 lists; up 34 since FY2020.
86	Decypher Technologies Ltd Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) Army (Department of the Army)	$23,172,865	0.1%	Rank history: #82 in FY2022, #69 in FY2023, #39 in FY2024 and #28 in FY2025; down 18 since FY2020.
87	Wellness Coaches USA LLC Top agencies DHS (Department of Homeland Security)	$23,135,080	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	Valor Healthcare Inc. Top agencies VA (Department of Veterans Affairs)	$23,098,287	0.1%	Rank history: #29 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
89	Medmark Veteran Services LLC Top agencies VA (Department of Veterans Affairs)	$23,087,072	0.1%	Rank history: not on the FY2022–FY2025 lists; up 13 since FY2020.
90	Solvet Services, LLC Top agencies VA (Department of Veterans Affairs)	$22,711,323	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	US Renal Care Inc. 2 awardees, including Dialysis Newco, LLC Top agencies VA (Department of Veterans Affairs)	$22,076,645	0.1%	Rank history: #86 in FY2022, #77 in FY2023, not on the FY2024 list and #41 in FY2025; down 9 since FY2020.
92	Amedistaf, LLC Top agencies HHS (Department of Health and Human Services)	$21,980,157	0.1%	Rank history: #77 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; up 49 since FY2020.
93	Center for Disease Detection, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$21,825,078	0.1%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
94	Platinum Business Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army) DHA (Defense Health Agency)	$21,790,257	0.1%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
95	The Royster Group, Inc. Top agencies DHA (Defense Health Agency) Army (Department of the Army) USAF (Department of the Air Force)	$21,756,154	0.1%	Rank history: #93 in FY2022, #84 in FY2023, #61 in FY2024 and #85 in FY2025; down 2 since FY2020.
96	American Renal Associates LLC Top agencies VA (Department of Veterans Affairs)	$21,589,756	0.1%	Rank history: not on the FY2022–FY2024 lists and #40 in FY2025; new, not ranked in FY2020.
97	Liquidagents Healthcare, LLC Top agencies HHS (Department of Health and Human Services)	$21,434,863	0.1%	Rank history: not on the FY2022–FY2025 lists; up 41 since FY2020.
98	Minute Molecular DIA Top agencies HHS (Department of Health and Human Services)	$21,300,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Primary Care Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$21,278,752	0.1%	Rank history: #74 in FY2022, #66 in FY2023, #69 in FY2024 and #68 in FY2025; up 45 since FY2020.
100	Readiforce Government Solutions LLC Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) Army (Department of the Army)	$21,038,393	0.1%	Rank history: #92 in FY2022, #62 in FY2023, #73 in FY2024 and #64 in FY2025; up 15 since FY2020.

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100 of 4,664 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	$23,098,864,963	UnitedHealth Group Incorporated
Q9 Other Medical Services	$5,450,137,526	Triwest Healthcare Alliance Corp
Q4 Nursing, Nursing Home, Eval/Screen	$3,690,217,042	Leidos Holdings, Inc.
Q3 Laboratory Testing Services	$3,588,947,004	Walgreen Co.
Q5 Medical, Dental, and Surgical Services	$1,723,289,117	Highmark Inc.
Q7 Specialized Technical/ Medical Support	$240,540,135	UnitedHealth Group Incorporated
Q8 Clerical Medical Support	$92,741,059	Stratus Federal Solutions LLC
Q6 Certified Medical Support	$64,073,547	Empowered Management Solutions LLC

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 $39.5 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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 FY2021?

1. UnitedHealth Group Incorporated ($9.59B), 2. Tcfii Valor Buyer LLC ($7.09B), 3. Centene Corporation ($3.23B), 4. Triwest Healthcare Alliance Corp ($3.08B), 5. Walgreen Co. ($899M), 6. Leidos Holdings, Inc. ($877M), 7. Accredo Health Group Inc. ($743M), 8. Highmark Inc. ($437M), 9. Martins Point Health Care Inc. ($392M), 10. The Johns Hopkins Health System Corporation ($392M).

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