Top 83 Contractors in PSC AN42: Health R&D Services; Health Care – Other; Applied Research, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Analytic Services Inc. Through Advanced Technology International Top agencies HHS (Department of Health and Human Services)	$247,999,997	26.2%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2023, #1 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
2	Start2 Group, Inc. Top agencies HHS (Department of Health and Human Services)	$117,505,224	12.4%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #1 in FY2025; up 4 since Aug 2024–Jul 2025.
3	Mathematica Inc. Top agencies HHS (Department of Health and Human Services)	$88,055,459	9.3%	Rank history: #6 in FY2021, #6 in FY2022, #7 in FY2023, #3 in FY2024 and #2 in FY2025; unchanged since Aug 2024–Jul 2025.
4	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top agencies Navy (Department of the Navy)	$59,979,653	6.3%	Rank history: #1 in FY2021, #2 in FY2022, #4 in FY2023, #4 in FY2024 and #5 in FY2025; up 1 since Aug 2024–Jul 2025.
5	Basilea Pharmaceutica AG Through Basilea Pharmaceutica International Ltd, Allschwil Top agencies HHS (Department of Health and Human Services)	$54,706,190	5.8%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #4 in FY2025; down 1 since Aug 2024–Jul 2025.
6	National Opinion Research Center Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$51,249,013	5.4%	Rank history: #3 in FY2021, #5 in FY2022, #9 in FY2023, #5 in FY2024 and #6 in FY2025; up 2 since Aug 2024–Jul 2025.
7	Ossium Health Inc. Top agencies HHS (Department of Health and Human Services)	$39,993,959	4.2%	Rank history: not on the FY2021–FY2023 lists, #12 in FY2024 and not on the FY2025 list; up 4 since Aug 2024–Jul 2025.
8	Velico Medical, Inc. Top agencies HHS (Department of Health and Human Services)	$38,297,749	4.0%	Rank history: #4 in FY2021, #9 in FY2022, #5 in FY2023, #18 in FY2024 and #25 in FY2025; new, not ranked in Aug 2024–Jul 2025.
9	American Institutes for Research In the Behavioral Sciences Top agencies HHS (Department of Health and Human Services)	$28,855,729	3.0%	Rank history: #16 in FY2021, #16 in FY2022, #27 in FY2023, #13 in FY2024 and #10 in FY2025; up 1 since Aug 2024–Jul 2025.
10	UnitedHealth Group Incorporated Through The Lewin Group, Inc. Top agencies HHS (Department of Health and Human Services)	$27,246,495	2.9%	Rank history: not on the FY2021 list, #28 in FY2022, #14 in FY2023, #6 in FY2024 and #8 in FY2025; down 1 since Aug 2024–Jul 2025.
11	Teledyne Flir Unmanned Ground Systems Inc Through Teledyne Brown Engineering, Inc. Top agencies Navy (Department of the Navy)	$25,017,292	2.6%	Rank history: #5 in FY2021, #11 in FY2022, #13 in FY2023, #14 in FY2024 and #11 in FY2025; up 2 since Aug 2024–Jul 2025.
12	ABT Global LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$11,779,640	1.2%	Rank history: #23 in FY2021, #23 in FY2022, #20 in FY2023, not on the FY2024 list and #14 in FY2025; new, not ranked in Aug 2024–Jul 2025.
13	Deloitte Through Deloitte Consulting LLP Top agencies HHS (Department of Health and Human Services)	$10,338,088	1.1%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #13 in FY2025; new, not ranked in Aug 2024–Jul 2025.
14	Medtech Innovator Top agencies HHS (Department of Health and Human Services)	$8,628,007	0.9%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and #32 in FY2025; up 22 since Aug 2024–Jul 2025.
15	The Rand Corporation Top agencies HHS (Department of Health and Human Services)	$7,677,521	0.8%	Rank history: not on the FY2021 list, #32 in FY2022, #19 in FY2023, #59 in FY2024 and #44 in FY2025; up 38 since Aug 2024–Jul 2025.
16	Acumen LLC Top agencies HHS (Department of Health and Human Services)	$7,614,197	0.8%	Rank history: not on the FY2021–FY2023 lists, #46 in FY2024 and #15 in FY2025; up 1 since Aug 2024–Jul 2025.
17	Innovation Development Institute Inc. Top agencies HHS (Department of Health and Human Services)	$7,368,462	0.8%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #16 in FY2025; up 20 since Aug 2024–Jul 2025.
18	Lumos Diagnostics, Inc. Top agencies HHS (Department of Health and Human Services)	$6,198,459	0.7%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #17 in FY2025; up 10 since Aug 2024–Jul 2025.
19	Regents of the University of Michigan Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$5,673,062	0.6%	Rank history: #18 in FY2021, #18 in FY2022, #22 in FY2023, #27 in FY2024 and #20 in FY2025; unchanged since Aug 2024–Jul 2025.
20	Culmen International, LLC Top agencies Navy (Department of the Navy)	$5,422,300	0.6%	Rank history: not on the FY2021–FY2023 lists, #80 in FY2024 and #19 in FY2025; up 12 since Aug 2024–Jul 2025.
21	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$5,150,138	0.5%	Rank history: not on the FY2021 list, #20 in FY2022, #44 in FY2023, #9 in FY2024 and #12 in FY2025; unchanged since Aug 2024–Jul 2025.
22	Federal Connect LLC Top agencies Navy (Department of the Navy)	$4,694,267	0.5%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #24 in FY2025; up 1 since Aug 2024–Jul 2025.
23	Econometrica, Inc. Top agencies HHS (Department of Health and Human Services)	$4,341,123	0.5%	Rank history: #12 in FY2021, #19 in FY2022, #25 in FY2023, #25 in FY2024 and #21 in FY2025; down 5 since Aug 2024–Jul 2025.
24	Goldbelt, Incorporated Through Goldbelt Apex, LLC Top agencies Navy (Department of the Navy)	$3,886,607	0.4%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; new, not ranked in Aug 2024–Jul 2025.
25	Kaleo, Inc. Top agencies HHS (Department of Health and Human Services)	$3,784,396	0.4%	Rank history: not on the FY2021–FY2023 lists, #31 in FY2024 and #7 in FY2025; down 18 since Aug 2024–Jul 2025.
26	Vysnova Partners LLC Top agencies Navy (Department of the Navy)	$3,707,137	0.4%	Rank history: #11 in FY2021, #10 in FY2022, #16 in FY2023, #19 in FY2024 and #30 in FY2025; down 10 since Aug 2024–Jul 2025.
27	Kaiser Foundation Hospitals Top agencies HHS (Department of Health and Human Services)	$3,692,716	0.4%	Rank history: not on the FY2021–FY2023 lists, #28 in FY2024 and #23 in FY2025; up 23 since Aug 2024–Jul 2025.
28	Priority One Services, Inc. Top agencies HHS (Department of Health and Human Services)	$3,199,828	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
29	PPD Development LP Top agencies HHS (Department of Health and Human Services)	$3,092,829	0.3%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
30	University of Washington Top agencies HHS (Department of Health and Human Services)	$2,897,937	0.3%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and not on the FY2025 list; up 1 since Aug 2024–Jul 2025.
31	Westat, Inc. 2 awardees Top agencies HHS (Department of Health and Human Services)	$2,878,333	0.3%	Rank history: #37 in FY2021, not on the FY2022 list, #38 in FY2023, not on the FY2024 list and #26 in FY2025; down 6 since Aug 2024–Jul 2025.
32	Odyssey Systems Consulting Group, Ltd. Top agencies Navy (Department of the Navy)	$2,506,827	0.3%	Rank history: #19 in FY2021, #22 in FY2022, #30 in FY2023, #33 in FY2024 and #27 in FY2025; down 5 since Aug 2024–Jul 2025.
33	Deutsches Zentrum FÜR Luft- UND Raumfahrt E.V. Top agencies NASA (National Aeronautics and Space Administration)	$2,370,219	0.3%	Rank history: not on the FY2021 list, #14 in FY2022, not on the FY2023 list, #21 in FY2024 and #39 in FY2025; up 14 since Aug 2024–Jul 2025.
34	Parsons Corporation Through Parsons Government Services Inc. Top agencies Navy (Department of the Navy)	$2,366,240	0.2%	Rank history: #10 in FY2021, #12 in FY2022, #24 in FY2023, #26 in FY2024 and #18 in FY2025; down 19 since Aug 2024–Jul 2025.
35	Axiom Resource Management, Inc. Top agencies Navy (Department of the Navy)	$1,941,602	0.2%	Rank history: #38 in FY2021, #30 in FY2022, #42 in FY2023, #37 in FY2024 and #33 in FY2025; down 2 since Aug 2024–Jul 2025.
36	Children's National Medical Center Through Children's Research Institute Top agencies HHS (Department of Health and Human Services)	$1,500,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; new, not ranked in Aug 2024–Jul 2025.
37	Noguchi Memorial Institute for Medical Research Top agencies Navy (Department of the Navy)	$1,299,310	0.1%	Rank history: #36 in FY2021, #37 in FY2022, #46 in FY2023, #57 in FY2024 and #37 in FY2025; up 12 since Aug 2024–Jul 2025.
38	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$1,283,408	0.1%	Rank history: #48 in FY2021, #35 in FY2022, #54 in FY2023, #62 in FY2024 and #46 in FY2025; up 16 since Aug 2024–Jul 2025.
39	Venesco LLC Top agencies Navy (Department of the Navy)	$1,075,320	0.1%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; up 17 since Aug 2024–Jul 2025.
40	Behavidence, Inc. Top agencies VA (Department of Veterans Affairs)	$1,019,423	0.1%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; up 8 since Aug 2024–Jul 2025.
41	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies HHS (Department of Health and Human Services)	$849,986	0.1%	Rank history: #78 in FY2021, not on the FY2022 list, #32 in FY2023, #29 in FY2024 and #29 in FY2025; down 21 since Aug 2024–Jul 2025.
42	American Type Culture Collection Top agencies HHS (Department of Health and Human Services)	$684,216	0.1%	Rank history: #70 in FY2021, not on the FY2022 list, #49 in FY2023, #60 in FY2024 and #42 in FY2025; up 9 since Aug 2024–Jul 2025.
43	Rutgers, the State University Through Rutgers the State University of New Jersey Top agencies VA (Department of Veterans Affairs)	$626,377	0.1%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; new, not ranked in Aug 2024–Jul 2025.
44	Vanderbilt University Medical Center Top agencies VA (Department of Veterans Affairs)	$602,739	0.1%	Rank history: not on the FY2021–FY2023 lists, #71 in FY2024 and not on the FY2025 list; up 15 since Aug 2024–Jul 2025.
45	Fedpoint Systems LLC Top agencies DHA (Defense Health Agency)	$545,104	0.1%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023, #66 in FY2024 and #47 in FY2025; up 10 since Aug 2024–Jul 2025.
46	Yale Univ Top agencies VA (Department of Veterans Affairs)	$499,999	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
47	The Regents of the University of California. San Francisco Top agencies VA (Department of Veterans Affairs)	$468,344	<0.1%	Rank history: not on the FY2021–FY2023 lists, #58 in FY2024 and #34 in FY2025; down 9 since Aug 2024–Jul 2025.
48	General Dynamics Corporation Through General Dynamics Information Technology, Inc. Top agencies Navy (Department of the Navy)	$405,128	<0.1%	Rank history: #9 in FY2021, #13 in FY2022, #18 in FY2023, #35 in FY2024 and #41 in FY2025; down 9 since Aug 2024–Jul 2025.
49	Johns Hopkins University Top agencies HHS (Department of Health and Human Services)	$373,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Aug 2024–Jul 2025.
50	Emergency Care Research Institute Top agencies HHS (Department of Health and Human Services)	$340,000	<0.1%	Rank history: #34 in FY2021, #49 in FY2022, #53 in FY2023, #55 in FY2024 and #53 in FY2025; new, not ranked in Aug 2024–Jul 2025.
51	University of Illinois Top agencies VA (Department of Veterans Affairs)	$300,852	<0.1%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; new, not ranked in Aug 2024–Jul 2025.
52	Technical Resources International, Inc. Top agencies HHS (Department of Health and Human Services)	$289,996	<0.1%	Rank history: #71 in FY2021, not on the FY2022 list, #60 in FY2023, #40 in FY2024 and #28 in FY2025; down 26 since Aug 2024–Jul 2025.
53	Systems Plus, Inc. Top agencies DHA (Defense Health Agency)	$254,437	<0.1%	Rank history: not on the FY2021–FY2023 lists, #68 in FY2024 and #52 in FY2025; up 7 since Aug 2024–Jul 2025.
54	Pathoseq Bio, LLC Top agencies Navy (Department of the Navy)	$247,497	<0.1%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and #54 in FY2025; new, not ranked in Aug 2024–Jul 2025.
55	Eurofins Discovery Services North America, LLC Top agencies HHS (Department of Health and Human Services)	$238,886	<0.1%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023, #99 in FY2024 and #55 in FY2025; new, not ranked in Aug 2024–Jul 2025.
56	University System of Maryland Through University of Maryland, College Park Top agencies VA (Department of Veterans Affairs)	$237,312	<0.1%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; new, not ranked in Aug 2024–Jul 2025.
57	University of Texas System Through University of Texas Medical Branch At Galveston Top agencies Navy (Department of the Navy)	$204,095	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
58	Biosurv International Ltd Top agencies Navy (Department of the Navy)	$147,789	<0.1%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023, #78 in FY2024 and #59 in FY2025; new, not ranked in Aug 2024–Jul 2025.
59	Universidad Peruana Cayetano Heredia Top agencies Navy (Department of the Navy)	$140,903	<0.1%	Rank history: #52 in FY2021, #52 in FY2022, #70 in FY2023, #84 in FY2024 and #60 in FY2025; up 7 since Aug 2024–Jul 2025.
60	University of Oxford Top agencies Navy (Department of the Navy)	$135,187	<0.1%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
61	The Regents of the University of Colorado Top agencies HHS (Department of Health and Human Services)	$132,999	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
62	Altec, Inc. Top agencies Navy (Department of the Navy)	$120,296	<0.1%	Rank history: not on the FY2021–FY2023 lists, #73 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
63	Partners Healthcare System Incorporated Through Massachusetts Eye and Ear Infirmary Top agencies VA (Department of Veterans Affairs)	$104,000	<0.1%	Rank history: #64 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
64	University of Kansas Through University of Kansas Medical Center Research Institute, Inc. Top agencies HHS (Department of Health and Human Services)	$90,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; new, not ranked in Aug 2024–Jul 2025.
65	Oregon Health & Science University Top agencies HHS (Department of Health and Human Services)	$90,000	<0.1%	Rank history: #17 in FY2021, #21 in FY2022, #26 in FY2023, #24 in FY2024 and #66 in FY2025; down 43 since Aug 2024–Jul 2025.
66	Nanoskunkworkx Sdn. BHD Top agencies Navy (Department of the Navy)	$90,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 6 since Aug 2024–Jul 2025.
67	Regents of the University of Minnesota Top agencies HHS (Department of Health and Human Services)	$90,000	<0.1%	Rank history: #30 in FY2021, #43 in FY2022, #35 in FY2023, #54 in FY2024 and #65 in FY2025; down 10 since Aug 2024–Jul 2025.
68	University of Southern California Top agencies HHS (Department of Health and Human Services)	$90,000	<0.1%	Rank history: #49 in FY2021, #44 in FY2022, #36 in FY2023, #52 in FY2024 and #49 in FY2025; down 10 since Aug 2024–Jul 2025.
69	Brown University Top agencies HHS (Department of Health and Human Services)	$90,000	<0.1%	Rank history: #32 in FY2021, #24 in FY2022, #40 in FY2023, #34 in FY2024 and #50 in FY2025; down 7 since Aug 2024–Jul 2025.
70	Komfo Anokye Teaching Hospital Top agencies Navy (Department of the Navy)	$70,054	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
71	Mayo Clinic Top agencies HHS (Department of Health and Human Services)	$68,174	<0.1%	Rank history: #39 in FY2021, #59 in FY2022, #34 in FY2023, #77 in FY2024 and #69 in FY2025; down 4 since Aug 2024–Jul 2025.
72	The Administrators of Tulane Educational Fund Top agencies Navy (Department of the Navy)	$66,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023, #89 in FY2024 and #70 in FY2025; down 3 since Aug 2024–Jul 2025.
73	Navrongo Health Research Center Top agencies Navy (Department of the Navy)	$63,274	<0.1%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023, #100 in FY2024 and #75 in FY2025; up 1 since Aug 2024–Jul 2025.
74	University Lab Partners Top agencies HHS (Department of Health and Human Services)	$59,956	<0.1%	Rank history: not on the FY2021–FY2023 lists, #42 in FY2024 and #9 in FY2025; down 39 since Aug 2024–Jul 2025.
75	Platt & Associates Inc. Top agencies VA (Department of Veterans Affairs)	$54,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; new, not ranked in Aug 2024–Jul 2025.
76	Perceptronics Solutions, Inc. Top agencies Navy (Department of the Navy)	$48,138	<0.1%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; new, not ranked in Aug 2024–Jul 2025.
77	Laboratory Corporation of America Holdings Top agencies HHS (Department of Health and Human Services)	$46,800	<0.1%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; new, not ranked in Aug 2024–Jul 2025.
78	Duke University Top agencies VA (Department of Veterans Affairs)	$46,090	<0.1%	Rank history: #24 in FY2021, #31 in FY2022, not on the FY2023–FY2024 lists and #62 in FY2025; up 5 since Aug 2024–Jul 2025.
79	University of South Carolina Top agencies VA (Department of Veterans Affairs)	$44,587	<0.1%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; down 1 since Aug 2024–Jul 2025.
80	Menzies School of Health Research Top agencies Navy (Department of the Navy)	$40,015	<0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
81	Institut Pasteur De Tunis Top agencies Navy (Department of the Navy)	$30,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; new, not ranked in Aug 2024–Jul 2025.
82	Emory University Top agencies HHS (Department of Health and Human Services)	$20,118	<0.1%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
83	Premier Healthcare Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$7,500	<0.1%	Rank history: not on the FY2021–FY2023 lists, #82 in FY2024 and #58 in FY2025; down 18 since Aug 2024–Jul 2025.

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 $947 million 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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.
• Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
• Rank changes compare with Aug 2024–Jul 2025. "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.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers