Top 100 Contractors in NAICS 6215: Medical and Diagnostic Laboratories, FY2025

Name: Top 100 Contractors in NAICS 6215: Medical and Diagnostic Laboratories, FY2025
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 57% of FY2025 NAICS 6215 contract dollars

Contract obligations: $554,380,249 Net of deobligations, by contracts coded NAICS 6215 or a code under it
Contractors: 473 Parent companies with an obligation
Largest contractor: Laboratory Corporation of America Holdings $144 million, 21.1% of obligations
Data as of: Oct 23, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Laboratory Corporation of America Holdings 10 awardees, including Laboratory Corporation of America, Center for Disease Detection, LLC and NWT Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$143,558,138	21.1%	Rank history: #4 in FY2021, #3 in FY2022, #2 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	Quest Diagnostics Incorporated 8 awardees, including Ameripath Inc., Quest Diagnostics Nichols Institute Inc. and Quest Diagnostics of Puerto Rico Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DHA (Defense Health Agency)	$99,352,807	14.6%	Rank history: #5 in FY2021, #4 in FY2022, #1 in FY2023 and #2 in FY2024; unchanged since FY2024.
3	Roche Holdings Inc. 2 awardees, including Foundation Medicine, Inc. and Roche Diagnostics Corporation Top agencies VA (Department of Veterans Affairs)	$47,975,879	7.1%	Rank history: not on the FY2021–FY2024 lists; new.
4	Valor Network, Inc. Top agencies DHA (Defense Health Agency) DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$20,299,217	3.0%	Rank history: #24 in FY2021, #12 in FY2022, #7 in FY2023 and #5 in FY2024; up 1 since FY2024.
5	SNA International LLC Top agencies WHS (DOD Washington Headquarters Service)	$17,830,866	2.6%	Rank history: not on the FY2021 list, #11 in FY2022, #6 in FY2023 and #4 in FY2024; down 1 since FY2024.
6	Vetmed Group LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$16,594,864	2.4%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2024; up 3 since FY2024.
7	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies DHA (Defense Health Agency)	$12,003,842	1.8%	Rank history: #25 in FY2021, #16 in FY2022, #10 in FY2023 and #12 in FY2024; up 5 since FY2024.
8	Baylor College of Medicine Through Baylor Miraca Genetics Laboratories LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$11,645,670	1.7%	Rank history: not on the FY2021–FY2024 lists; up 354 since FY2024.
9	Family Health International Top agencies USAID (US Agency for International Development)	$9,456,610	1.4%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2024; up 11 since FY2024.
10	College of American Pathologists Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$9,208,194	1.4%	Rank history: not on the FY2021–FY2024 lists; up 140 since FY2024.
11	University of Utah 2 awardees, including Arup Laboratories Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Army (Department of the Army)	$7,420,079	1.1%	Rank history: #23 in FY2021, #17 in FY2022, #12 in FY2023 and #53 in FY2024; up 42 since FY2024.
12	Fulgent Genetics, Inc. 2 awardees, including Fulgent Therapeutics LLC Top agencies VA (Department of Veterans Affairs)	$7,414,652	1.1%	Rank history: #10 in FY2021, #20 in FY2022, #36 in FY2023 and #13 in FY2024; up 1 since FY2024.
13	Mayo Collaborative Services, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$6,896,510	1.0%	Rank history: #88 in FY2021, not on the FY2022–FY2023 lists and #16 in FY2024; up 3 since FY2024.
14	Tempus AI, Inc. 2 awardees, including Ambry Genetics Corporation Top agencies VA (Department of Veterans Affairs)	$5,734,095	0.8%	Rank history: not on the FY2021 list, #23 in FY2022, #40 in FY2023 and #8 in FY2024; down 6 since FY2024.
15	Abbott Laboratories Inc. 7 awardees, including Pembrooke Occupational Health, Inc., Exact Sciences Corporation and Alere Toxicology Services, Inc. Top agencies OSD (Office of the Secretary of Defense) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$5,714,029	0.8%	Rank history: #30 in FY2021, #18 in FY2022, #14 in FY2023 and #11 in FY2024; down 4 since FY2024.
16	Government Imaging Services LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$4,857,803	0.7%	Rank history: #33 in FY2021, #21 in FY2022, #16 in FY2023 and #10 in FY2024; down 6 since FY2024.
17	Northern Plains Laboratory LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$4,619,960	0.7%	Rank history: #35 in FY2021, #28 in FY2022, #18 in FY2023 and #18 in FY2024; up 1 since FY2024.
18	Inner Vision Radiology LLC Top agencies VA (Department of Veterans Affairs)	$4,619,010	0.7%	Rank history: not on the FY2021–FY2024 lists; new.
19	Sonora Quest Laboratories LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$4,484,426	0.7%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2024; down 4 since FY2024.
20	Caredx, Inc. 2 awardees Top agencies VA (Department of Veterans Affairs)	$4,139,251	0.6%	Rank history: not on the FY2021 list, #49 in FY2022, #33 in FY2023 and #73 in FY2024; up 53 since FY2024.
21	Creative Testing Solutions Top agencies DHA (Defense Health Agency)	$3,574,913	0.5%	Rank history: #54 in FY2021, #25 in FY2022, #46 in FY2023 and #31 in FY2024; up 10 since FY2024.
22	Mystic Ventures Group LLC Top agencies VA (Department of Veterans Affairs)	$3,286,512	0.5%	Rank history: #38 in FY2021, #44 in FY2022, #23 in FY2023 and #22 in FY2024; unchanged since FY2024.
23	Oregon Health & Science University Top agencies VA (Department of Veterans Affairs)	$3,081,030	0.5%	Rank history: #31 in FY2021, #55 in FY2022, #35 in FY2023 and #28 in FY2024; up 5 since FY2024.
24	Diagnostic Imaging Associates, Inc. Top agencies HHS (Department of Health and Human Services)	$2,982,040	0.4%	Rank history: #44 in FY2021, #31 in FY2022, #28 in FY2023 and #21 in FY2024; down 3 since FY2024.
25	Labcorp Oklahoma Inc. Top agencies HHS (Department of Health and Human Services)	$2,903,000	0.4%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2023 and #40 in FY2024; up 15 since FY2024.
26	Tatitlek Federal Services LLC Top agencies Army (Department of the Army)	$2,851,300	0.4%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; down 1 since FY2024.
27	Redhawk Group International, LLC Top agencies VA (Department of Veterans Affairs)	$2,739,728	0.4%	Rank history: not on the FY2021 list, #40 in FY2022, #24 in FY2023 and #62 in FY2024; up 35 since FY2024.
28	Cherokee Nation Through Cherokee Nation Operational Solutions, L.L.C. Top agencies HHS (Department of Health and Human Services)	$2,707,088	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
29	Vitalant Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,466,282	0.4%	Rank history: #78 in FY2021, #82 in FY2022, #79 in FY2023 and not on the FY2024 list; returned.
30	Shared Medical Services Inc. Top agencies VA (Department of Veterans Affairs)	$2,200,820	0.3%	Rank history: not on the FY2021 list, #50 in FY2022, #27 in FY2023 and #24 in FY2024; down 6 since FY2024.
31	Neogenomics Inc. Through Neogenomics Laboratories, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$2,089,681	0.3%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2024; down 4 since FY2024.
32	Advanced Imaging Management LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$2,035,710	0.3%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; down 9 since FY2024.
33	Prairie Band Health Services Inc. Top agencies HHS (Department of Health and Human Services)	$1,960,920	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
34	Deployed Resources LLC Top agencies HHS (Department of Health and Human Services)	$1,907,209	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
35	Insight Health Corp Top agencies VA (Department of Veterans Affairs)	$1,880,089	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
36	Bloodworks Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$1,836,215	0.3%	Rank history: #52 in FY2021, #81 in FY2022, #84 in FY2023 and #90 in FY2024; up 54 since FY2024.
37	University of Wisconsin Hospitals and Clinics Authority Top agencies VA (Department of Veterans Affairs)	$1,724,277	0.3%	Rank history: not on the FY2021–FY2024 lists; up 96 since FY2024.
38	Ginkgo Bioworks Holdings Inc. Through Ginkgo Bioworks, Inc. Top agencies HHS (Department of Health and Human Services)	$1,721,834	0.3%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2024; down 5 since FY2024.
39	Commonspirit Health Through Commonspirit Oregon Top agencies VA (Department of Veterans Affairs)	$1,598,281	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
40	IS Healthcare LLC Top agencies VA (Department of Veterans Affairs)	$1,578,474	0.2%	Rank history: #56 in FY2021, #52 in FY2022, #71 in FY2023 and #52 in FY2024; up 12 since FY2024.
41	Ibex It Business Experts LLC Top agencies DHA (Defense Health Agency)	$1,549,690	0.2%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023 and #41 in FY2024; unchanged since FY2024.
42	Mariano Prime LLC Top agencies DHA (Defense Health Agency)	$1,541,391	0.2%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; down 7 since FY2024.
43	Veracyte, Inc. 2 awardees, including Veracyte Labs SD Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$1,526,706	0.2%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2023 and #64 in FY2024; up 21 since FY2024.
44	White Mountain Radiology, P.L.L.C. Top agencies HHS (Department of Health and Human Services)	$1,506,658	0.2%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023 and #47 in FY2024; up 3 since FY2024.
45	University of Washington 2 awardees, including University of Washington School of Medicine Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Commerce (Department of Commerce)	$1,504,888	0.2%	Rank history: #43 in FY2021, #30 in FY2022 and not on the FY2023–FY2024 lists; up 101 since FY2024.
46	La Nigerienne D' Assurances Et De Reassurances NIA Top agencies DOS (Department of State)	$1,491,017	0.2%	Rank history: not on the FY2021–FY2024 lists; up 167 since FY2024.
47	Avmedical LLC Top agencies VA (Department of Veterans Affairs)	$1,449,100	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
48	Upmc 2 awardees, including Upmc Presbyterian Shadyside and Upmc Western Maryland Corp Top agencies VA (Department of Veterans Affairs)	$1,422,020	0.2%	Rank history: #46 in FY2021, #47 in FY2022, #49 in FY2023 and not on the FY2024 list; returned.
49	Cytopath Biopsy Lab Inc. Top agencies VA (Department of Veterans Affairs)	$1,393,165	0.2%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2024; up 29 since FY2024.
50	Navitas Clinical Research Inc. Top agencies HHS (Department of Health and Human Services)	$1,388,618	0.2%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2024; down 2 since FY2024.
51	Danaher Corporation 2 awardees, including Cepheid and Beckman Coulter Gesellschaft MIT Beschraenkter Haftung Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$1,284,853	0.2%	Rank history: #36 in FY2021, #76 in FY2022, #39 in FY2023 and #51 in FY2024; unchanged since FY2024.
52	Maxmed Healthcare Inc. Top agencies DHA (Defense Health Agency)	$1,249,026	0.2%	Rank history: #70 in FY2021, #64 in FY2022, not on the FY2023 list and #39 in FY2024; down 13 since FY2024.
53	Med-Share Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$1,127,622	0.2%	Rank history: #82 in FY2021, #61 in FY2022, #53 in FY2023 and #81 in FY2024; up 28 since FY2024.
54	Physicians Laboratory, P.C. Top agencies VA (Department of Veterans Affairs)	$1,062,850	0.2%	Rank history: not on the FY2021 list, #53 in FY2022, #66 in FY2023 and #71 in FY2024; up 17 since FY2024.
55	Diagnostic Laboratory Services, Inc. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) HHS (Department of Health and Human Services)	$1,044,040	0.2%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2024; up 22 since FY2024.
56	California Department of Public Health Top agencies DHA (Defense Health Agency)	$1,038,696	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
57	Loyola University Health System Top agencies VA (Department of Veterans Affairs)	$1,037,000	0.2%	Rank history: not on the FY2021–FY2024 lists; up 101 since FY2024.
58	Genscript USA Inc. Top agencies HHS (Department of Health and Human Services)	$1,026,000	0.2%	Rank history: #71 in FY2021, #68 in FY2022, #63 in FY2023 and #61 in FY2024; up 3 since FY2024.
59	Iowa Pathology Associates, P.C. Top agencies VA (Department of Veterans Affairs)	$1,005,863	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and not on the FY2024 list; up 48 since FY2024.
60	The Vanderbilt University Through Vanderbilt University Medical Center Top agencies VA (Department of Veterans Affairs)	$998,749	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
61	South Central Pathology Lab Pa Top agencies VA (Department of Veterans Affairs)	$958,089	0.1%	Rank history: not on the FY2021 list, #80 in FY2022, #96 in FY2023 and #93 in FY2024; up 32 since FY2024.
62	Mobile Imaging of America Corp Top agencies DHA (Defense Health Agency)	$954,500	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
63	The University of Iowa Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$882,924	0.1%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2023 and #63 in FY2024; unchanged since FY2024.
64	All Valley Imaging, L.l.c Top agencies HHS (Department of Health and Human Services)	$880,885	0.1%	Rank history: #64 in FY2021, #56 in FY2022, #50 in FY2023 and #46 in FY2024; down 18 since FY2024.
65	Stanford Health Care Top agencies VA (Department of Veterans Affairs)	$859,551	0.1%	Rank history: not on the FY2021–FY2024 lists; up 133 since FY2024.
66	Cardionet LLC Top agencies VA (Department of Veterans Affairs)	$853,562	0.1%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2024; down 7 since FY2024.
67	One Stop Recruiting LLC Top agencies VA (Department of Veterans Affairs)	$848,028	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
68	University of Wisconsin System Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$823,023	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
69	Regents of the University of Michigan Top agencies VA (Department of Veterans Affairs)	$782,039	0.1%	Rank history: #89 in FY2021, not on the FY2022 list, #70 in FY2023 and #60 in FY2024; down 9 since FY2024.
70	Ambulnz Holdings, LLC Through Rapid Temps, LLC Top agencies HHS (Department of Health and Human Services)	$732,080	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
71	Sophia Genetics Inc. Top agencies DHA (Defense Health Agency)	$731,240	0.1%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023 and not on the FY2024 list; returned.
72	Partners Healthcare System Incorporated 2 awardees, including Brigham & Womens Hospital Inc. and Massachusetts General Physicians Organization, Inc. Top agencies VA (Department of Veterans Affairs)	$722,279	0.1%	Rank history: not on the FY2021 list, #87 in FY2022, #55 in FY2023 and #66 in FY2024; down 6 since FY2024.
73	Biodesix, Inc. Top agencies VA (Department of Veterans Affairs)	$690,901	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
74	BTL Technologies, Inc. Top agencies VA (Department of Veterans Affairs)	$677,775	0.1%	Rank history: #76 in FY2021, not on the FY2022–FY2023 lists and #68 in FY2024; down 6 since FY2024.
75	Regents of the University of Minnesota Top agencies HHS (Department of Health and Human Services)	$674,381	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
76	DMS Health Technologies Inc. 2 awardees, including DMS Imaging, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$667,426	0.1%	Rank history: not on the FY2021–FY2024 lists; up 99 since FY2024.
77	University of Texas System 2 awardees, including The University of Texas Southwestern Medical Center Top agencies VA (Department of Veterans Affairs)	$644,857	0.1%	Rank history: not on the FY2021 list, #45 in FY2022, not on the FY2023 list and #42 in FY2024; down 35 since FY2024.
78	Nephropathology Associates, PLC Top agencies VA (Department of Veterans Affairs)	$635,621	0.1%	Rank history: not on the FY2021–FY2024 lists; up 54 since FY2024.
79	National Medical Services, Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$626,542	0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #85 in FY2024; up 6 since FY2024.
80	Genomic Health, Inc. 2 awardees, including Preventiongenetics LLC Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$609,826	0.1%	Rank history: #20 in FY2021, #60 in FY2022, #26 in FY2023 and #30 in FY2024; down 50 since FY2024.
81	Department of General Services Virginia Top agencies DHA (Defense Health Agency)	$607,200	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
82	Amprion, Inc. Top agencies HHS (Department of Health and Human Services)	$598,400	0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and #95 in FY2024; up 13 since FY2024.
83	State of South Carolina Through Medical University Hospital Authority Top agencies VA (Department of Veterans Affairs)	$587,926	0.1%	Rank history: not on the FY2021 list, #94 in FY2022, not on the FY2023 list and #55 in FY2024; down 28 since FY2024.
84	Central TOX LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$586,349	0.1%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and #83 in FY2024; down 1 since FY2024.
85	Psomagen Inc. Top agencies HHS (Department of Health and Human Services)	$585,703	0.1%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2024; down 51 since FY2024.
86	Incyte Pathology, P.S Top agencies VA (Department of Veterans Affairs)	$585,330	0.1%	Rank history: not on the FY2021 list, #71 in FY2022, #68 in FY2023 and not on the FY2024 list; up 27 since FY2024.
87	Yale Univ Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$581,708	0.1%	Rank history: not on the FY2021 list, #34 in FY2022 and not on the FY2023–FY2024 lists; up 19 since FY2024.
88	Peninsula Histopathology Laboratory Inc. Top agencies VA (Department of Veterans Affairs)	$540,592	0.1%	Rank history: not on the FY2021 list, #89 in FY2022, #64 in FY2023 and #94 in FY2024; up 6 since FY2024.
89	Medical University Hospital Authority Top agencies VA (Department of Veterans Affairs)	$518,369	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
90	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$508,380	0.1%	Rank history: not on the FY2021 list, #35 in FY2022, #20 in FY2023 and #76 in FY2024; down 14 since FY2024.
91	Dhhs State Public Health Lab Top agencies DHA (Defense Health Agency)	$506,880	0.1%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2024; down 3 since FY2024.
92	Chesapeake Toxicology Resources, LLC Top agencies DOT (Department of Transportation)	$506,319	0.1%	Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 4 since FY2024.
93	Northland Healthcare Alliance Top agencies HHS (Department of Health and Human Services)	$504,025	0.1%	Rank history: not on the FY2021–FY2024 lists; up 17 since FY2024.
94	Mdxhealth Inc. Top agencies VA (Department of Veterans Affairs)	$494,260	0.1%	Rank history: not on the FY2021–FY2022 lists, #89 in FY2023 and #82 in FY2024; down 12 since FY2024.
95	The Chenega Corporation Through Chenega Tri-Services, LLC Top agencies DHA (Defense Health Agency)	$490,052	0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023 and not on the FY2024 list; returned.
96	Fresenius Medical Care Holdings Inc. Through Dialysis Clinic, Inc. Top agencies VA (Department of Veterans Affairs)	$477,990	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	Interpath Laboratory, Inc. Top agencies VA (Department of Veterans Affairs)	$476,970	0.1%	Rank history: not on the FY2021–FY2024 lists; up 46 since FY2024.
98	University of California, LOS Angeles Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$469,474	0.1%	Rank history: not on the FY2021–FY2023 lists and #84 in FY2024; down 14 since FY2024.
99	American Veteran Contracting Solutions LLC Top agencies VA (Department of Veterans Affairs)	$468,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023 and #98 in FY2024; down 1 since FY2024.
100	Fairbanks Memorial Hospital, LLC Top agencies DHA (Defense Health Agency)	$459,148	0.1%	Rank history: not on the FY2021–FY2024 lists; up 22 since FY2024.

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100 of 473 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 6215

Code	Net obligations	Largest contractor
62151 Medical and Diagnostic Laboratories	$554,380,249	Laboratory Corporation of America Holdings

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 $680 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.
Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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 NAICS 6215 contractors in FY2025?

1. Laboratory Corporation of America Holdings ($144M), 2. Quest Diagnostics Incorporated ($99.4M), 3. Roche Holdings Inc. ($48M), 4. Valor Network, Inc. ($20.3M), 5. SNA International LLC ($17.8M), 6. Vetmed Group LLC ($16.6M), 7. The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. ($12M), 8. Baylor College of Medicine ($11.6M), 9. Family Health International ($9.46M), 10. College of American Pathologists ($9.21M).

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