Top 95 Contractors in PSC R420: Support – Professional: Certifications and Accreditations (Other Than Education or Information Technology C&A), Jul 2025–Jun 2026

Name: Top 95 Contractors in PSC R420: Support – Professional: Certifications and Accreditations (Other Than Education or Information Technology C&A), Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 81% of PSC R420 contract dollars from July 2025 through June 2026

Contract obligations: $49,813,911 Net of deobligations, by contracts coded PSC R420
Contractors: 96 Parent companies with an obligation
Largest contractor: Joint Commission On Accreditation of Healthcare Organizations $15 million, 27.4% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 95 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Joint Commission On Accreditation of Healthcare Organizations Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$14,989,639	27.4%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023, #2 in FY2024 and #1 in FY2025; up 1 since Jul 2024–Jun 2025.
2	College of American Pathologists Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$7,432,158	13.6%	Rank history: #4 in FY2021, #3 in FY2022, #4 in FY2023, #4 in FY2024 and #2 in FY2025; up 1 since Jul 2024–Jun 2025.
3	National Committee for Quality Assurance Top agencies HHS (Department of Health and Human Services)	$6,002,146	11.0%	Rank history: not on the FY2021 list, #5 in FY2022, #3 in FY2023, #3 in FY2024 and #3 in FY2025; new, not ranked in Jul 2024–Jun 2025.
4	Tetrad Digital Integrity LLC Top agencies Navy (Department of the Navy)	$4,058,188	7.4%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023, #6 in FY2024 and #6 in FY2025; up 7 since Jul 2024–Jun 2025.
5	Colossal Contracting LLC Top agencies Commerce (Department of Commerce)	$3,048,396	5.6%	Rank history: not on the FY2021–FY2024 lists and #5 in FY2025; new, not ranked in Jul 2024–Jun 2025.
6	Pherson Associates, LLC Top agencies DCSA (Defense Counterintelligence and Security Agency)	$2,506,264	4.6%	Rank history: not on the FY2021–FY2023 lists, #8 in FY2024 and #8 in FY2025; down 1 since Jul 2024–Jun 2025.
7	Relx Inc. Through Elsevier Inc. Top agencies DHA (Defense Health Agency)	$2,017,373	3.7%	Rank history: not on the FY2021–FY2024 lists and #15 in FY2025; up 56 since Jul 2024–Jun 2025.
8	Old Harbor Solutions LLC Top agencies DHS (Department of Homeland Security)	$1,650,636	3.0%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2023, #7 in FY2024 and #9 in FY2025; down 1 since Jul 2024–Jun 2025.
9	American College of Surgeons Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$1,541,228	2.8%	Rank history: #8 in FY2021, #10 in FY2022, #7 in FY2023, #53 in FY2024 and #11 in FY2025; unchanged since Jul 2024–Jun 2025.
10	American Association of Blood Banks, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,120,070	2.0%	Rank history: #14 in FY2021, #15 in FY2022, #12 in FY2023, #10 in FY2024 and #12 in FY2025; unchanged since Jul 2024–Jun 2025.
11	Accreditation Association for Ambulatory Health Care, Inc. Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$988,155	1.8%	Rank history: #12 in FY2021, #13 in FY2022, #15 in FY2023, #11 in FY2024 and #14 in FY2025; up 3 since Jul 2024–Jun 2025.
12	Windsor Group LLC Top agencies HHS (Department of Health and Human Services)	$922,422	1.7%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #10 in FY2025; down 4 since Jul 2024–Jun 2025.
13	Accreditation Council for Graduate Medical Education Top agencies DHA (Defense Health Agency)	$766,828	1.4%	Rank history: #47 in FY2021, #34 in FY2022, #41 in FY2023, #33 in FY2024 and #13 in FY2025; unchanged since Jul 2024–Jun 2025.
14	Center for Public Safety Excellence, Inc. Top agencies Navy (Department of the Navy)	$688,598	1.3%	Rank history: #17 in FY2021, #18 in FY2022, #16 in FY2023, #20 in FY2024 and #16 in FY2025; new, not ranked in Jul 2024–Jun 2025.
15	The National Registry of Emergency Medical Technicians Inc. Top agencies Army (Department of the Army)	$464,850	0.8%	Rank history: #23 in FY2021, #23 in FY2022, #17 in FY2023, #15 in FY2024 and #18 in FY2025; unchanged since Jul 2024–Jun 2025.
16	Solutions for Information Design, Inc. Top agencies USAF (Department of the Air Force)	$430,644	0.8%	Rank history: #21 in FY2021, #25 in FY2022, #18 in FY2023, #16 in FY2024 and #19 in FY2025; down 4 since Jul 2024–Jun 2025.
17	American Association for Laboratory Accreditation, Inc. Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) USDA (Department of Agriculture)	$409,794	0.7%	Rank history: #28 in FY2021, #60 in FY2022, #27 in FY2023, #23 in FY2024 and #22 in FY2025; up 2 since Jul 2024–Jun 2025.
18	Black Fox LLC Top agencies Army (Department of the Army)	$393,834	0.7%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; new, not ranked in Jul 2024–Jun 2025.
19	Ansi National Accreditation Board LLC Top agencies DHS (Department of Homeland Security) DHA (Defense Health Agency) DOJ (Department of Justice)	$324,773	0.6%	Rank history: #22 in FY2021, #19 in FY2022, #21 in FY2023, #14 in FY2024 and #17 in FY2025; down 1 since Jul 2024–Jun 2025.
20	Iwaterman LLC Top agencies Navy (Department of the Navy)	$233,930	0.4%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
21	American National Standards Institute Incorporated Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$205,605	0.4%	Rank history: #48 in FY2021, #58 in FY2022, #53 in FY2023, #45 in FY2024 and #35 in FY2025; up 18 since Jul 2024–Jun 2025.
22	Hoolaulima Government Solutions, LLC Top agencies DHA (Defense Health Agency)	$199,356	0.4%	Rank history: not on the FY2021 list, #36 in FY2022, #31 in FY2023, #29 in FY2024 and #25 in FY2025; up 2 since Jul 2024–Jun 2025.
23	American Nurses Credentialing Center, Inc. A / K / A American Nurses Credentialing Center Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$186,358	0.3%	Rank history: not on the FY2021–FY2023 lists, #36 in FY2024 and #43 in FY2025; up 20 since Jul 2024–Jun 2025.
24	Blue Yonder Inc. Top agencies Navy (Department of the Navy)	$180,662	0.3%	Rank history: not on the FY2021–FY2023 lists, #13 in FY2024 and #26 in FY2025; down 2 since Jul 2024–Jun 2025.
25	Global Strategic Energy LLC Top agencies USAF (Department of the Air Force)	$170,682	0.3%	Rank history: #20 in FY2021, #27 in FY2022, #20 in FY2023, #18 in FY2024 and #21 in FY2025; down 9 since Jul 2024–Jun 2025.
26	American Society for Radiation Oncology Top agencies VA (Department of Veterans Affairs)	$142,500	0.3%	Rank history: #40 in FY2021, #51 in FY2022, #39 in FY2023, #40 in FY2024 and #29 in FY2025; up 7 since Jul 2024–Jun 2025.
27	Eagle Force, Inc. Top agencies Army (Department of the Army)	$136,800	0.3%	Rank history: #42 in FY2021, #63 in FY2022, #36 in FY2023, #35 in FY2024 and #54 in FY2025; up 14 since Jul 2024–Jun 2025.
28	International Electrical Testing Association Top agencies Army (Department of the Army)	$122,720	0.2%	Rank history: #41 in FY2021, #44 in FY2022, #48 in FY2023, #30 in FY2024 and #33 in FY2025; down 3 since Jul 2024–Jun 2025.
29	Association for Clinical Pastoral Education Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$114,428	0.2%	Rank history: #68 in FY2021, #53 in FY2022, #56 in FY2023, #50 in FY2024 and #34 in FY2025; up 17 since Jul 2024–Jun 2025.
30	American Society of Health-System Pharmacists Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$85,506	0.2%	Rank history: #37 in FY2021, #48 in FY2022, #49 in FY2023, #34 in FY2024 and #24 in FY2025; down 4 since Jul 2024–Jun 2025.
31	National Commission On Correctional Health Care Top agencies DHS (Department of Homeland Security)	$80,996	0.1%	Rank history: #59 in FY2021, #61 in FY2022, #61 in FY2023, #27 in FY2024 and #38 in FY2025; up 9 since Jul 2024–Jun 2025.
32	Insi Cloud Inc Top agencies Army (Department of the Army)	$78,208	0.1%	Rank history: not on the FY2021–FY2023 lists, #54 in FY2024 and #58 in FY2025; up 16 since Jul 2024–Jun 2025.
33	Sylver Rain Consulting, LLC Top agencies DHS (Department of Homeland Security)	$73,989	0.1%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; down 5 since Jul 2024–Jun 2025.
34	Crisis Action Specialists, LLC Top agencies Navy (Department of the Navy)	$70,342	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
35	Palmetto Air & Water Balance - Raleigh, Inc. Through Palmetto Air & Water Balance Inc. Top agencies VA (Department of Veterans Affairs)	$67,716	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
36	Association of Certified Anti-Money Laundering Specialists, LLC Top agencies DOJ (Department of Justice)	$58,440	0.1%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	Software Information Resource Corp Top agencies EEOC (Equal Employment Opportunity Commission)	$54,722	0.1%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Jul 2024–Jun 2025.
38	L1 Enterprises Incorporated Top agencies VA (Department of Veterans Affairs)	$53,408	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39	Mountain State ESC Top agencies Army (Department of the Army)	$52,500	0.1%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023, #59 in FY2024 and #47 in FY2025; up 10 since Jul 2024–Jun 2025.
40	American Indian Health & Services Corporation Through Webmd Health Corp. Top agencies HHS (Department of Health and Human Services)	$48,466	0.1%	Rank history: not on the FY2021–FY2023 lists, #42 in FY2024 and #49 in FY2025; down 2 since Jul 2024–Jun 2025.
41	Foxfire Scientific, Inc. Top agencies DHA (Defense Health Agency)	$46,570	0.1%	Rank history: not on the FY2021–FY2023 lists, #84 in FY2024 and #73 in FY2025; up 27 since Jul 2024–Jun 2025.
42	Government and Military Certification Systems, Inc. Top agencies Army (Department of the Army)	$42,532	0.1%	Rank history: #71 in FY2021, #94 in FY2022, #42 in FY2023, #46 in FY2024 and #37 in FY2025; unchanged since Jul 2024–Jun 2025.
43	American Bar Association Top agencies Navy (Department of the Navy)	$41,500	0.1%	Rank history: not on the FY2021 list, #80 in FY2022, #76 in FY2023, #64 in FY2024 and #57 in FY2025; up 16 since Jul 2024–Jun 2025.
44	Koniag Operations Services LLC Top agencies Treasury (Department of the Treasury)	$41,068	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
45	Clinical and Laboratory Standards Institute, Inc. Top agencies DHA (Defense Health Agency)	$38,500	0.1%	Rank history: #83 in FY2021, not on the FY2022 list, #79 in FY2023, #72 in FY2024 and #60 in FY2025; up 16 since Jul 2024–Jun 2025.
46	Tetrahedron, Inc. Top agencies Army (Department of the Army)	$38,468	0.1%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; new, not ranked in Jul 2024–Jun 2025.
47	Quality Management International Inc. Top agencies DHS (Department of Homeland Security)	$37,526	0.1%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Jul 2024–Jun 2025.
48	Relias LLC Top agencies VA (Department of Veterans Affairs)	$36,042	0.1%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; up 28 since Jul 2024–Jun 2025.
49	Directtrust.ORG Inc. Top agencies HHS (Department of Health and Human Services)	$35,250	0.1%	Rank history: not on the FY2021–FY2023 lists, #62 in FY2024 and #62 in FY2025; up 3 since Jul 2024–Jun 2025.
50	Detroit East Medical Control Authority (Demca,) Inc. Top agencies VA (Department of Veterans Affairs)	$35,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023, #92 in FY2024 and #63 in FY2025; up 14 since Jul 2024–Jun 2025.
51	Zoll Medical Corporation Top agencies VA (Department of Veterans Affairs)	$33,392	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
52	Integration Technologies Group, Inc. Top agencies DOT (Department of Transportation)	$30,965	0.1%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; new, not ranked in Jul 2024–Jun 2025.
53	Simx, Inc. Top agencies Army (Department of the Army)	$30,940	0.1%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023, not on the FY2024 list and #65 in FY2025; new, not ranked in Jul 2024–Jun 2025.
54	Foundation for the Accreditation of Cellular Therapy Top agencies DHA (Defense Health Agency)	$28,145	0.1%	Rank history: not on the FY2021 list, #89 in FY2022, #85 in FY2023, #75 in FY2024 and #68 in FY2025; up 13 since Jul 2024–Jun 2025.
55	LBT Diagnostic Radiation Physics Consulting Ltd Top agencies DHA (Defense Health Agency)	$25,475	<0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
56	Wisconsin Hospital Association Inc. Top agencies VA (Department of Veterans Affairs)	$25,350	<0.1%	Rank history: #89 in FY2021, not on the FY2022 list, #89 in FY2023, #80 in FY2024 and #71 in FY2025; up 14 since Jul 2024–Jun 2025.
57	A2La Workplace Training, Inc. Top agencies Army (Department of the Army)	$24,874	<0.1%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2023, #57 in FY2024 and #70 in FY2025; up 5 since Jul 2024–Jun 2025.
58	Cola Inc. Top agencies HHS (Department of Health and Human Services)	$23,882	<0.1%	Rank history: not on the FY2021 list, #84 in FY2022, not on the FY2023 list, #70 in FY2024 and not on the FY2025 list; up 43 since Jul 2024–Jun 2025.
59	Perry Johnson Laboratory Accreditation Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$23,531	<0.1%	Rank history: not on the FY2021 list, #99 in FY2022, not on the FY2023 list, #89 in FY2024 and #72 in FY2025; up 44 since Jul 2024–Jun 2025.
60	Aaalac International Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$21,605	<0.1%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023, #73 in FY2024 and #55 in FY2025; down 4 since Jul 2024–Jun 2025.
61	Therapeutic Research Center, LLC Top agencies VA (Department of Veterans Affairs)	$20,796	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
62	SAI Global Inc. Top agencies Army (Department of the Army)	$20,100	<0.1%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; new, not ranked in Jul 2024–Jun 2025.
63	North Carolina Department of Environmental Quality Top agencies DOI (Department of the Interior)	$20,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; new, not ranked in Jul 2024–Jun 2025.
64	American Industrial Hygiene Association Top agencies DHA (Defense Health Agency) DOL (Department of Labor)	$19,805	<0.1%	Rank history: #77 in FY2021, #54 in FY2022, #55 in FY2023, #43 in FY2024 and #41 in FY2025; down 27 since Jul 2024–Jun 2025.
65	Positive Approach LLC Top agencies VA (Department of Veterans Affairs)	$18,860	<0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; new, not ranked in Jul 2024–Jun 2025.
66	Joint Commission Resources, Inc. Top agencies VA (Department of Veterans Affairs)	$18,200	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
67	Quality Systems Registrars, Inc. Top agencies Army (Department of the Army)	$18,100	<0.1%	Rank history: #75 in FY2021, #93 in FY2022, not on the FY2023 list, #47 in FY2024 and #77 in FY2025; down 10 since Jul 2024–Jun 2025.
68	The American Correctional Association Top agencies Army (Department of the Army) DOS (Department of State)	$17,000	<0.1%	Rank history: #50 in FY2021, #22 in FY2022, #22 in FY2023, #49 in FY2024 and #39 in FY2025; down 23 since Jul 2024–Jun 2025.
69	Energy Psychology Group, LLC Top agencies VA (Department of Veterans Affairs)	$16,924	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
70	Trauma & Acute Care Foundation Texas Ems Top agencies DHA (Defense Health Agency)	$16,500	<0.1%	Rank history: not on the FY2021–FY2023 lists, #99 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
71	Institute for Credentialing Excellence Top agencies DCSA (Defense Counterintelligence and Security Agency)	$15,075	<0.1%	Rank history: #88 in FY2021, not on the FY2022–FY2024 lists and #74 in FY2025; up 11 since Jul 2024–Jun 2025.
72	The Nelac Institute Top agencies EPA (Environmental Protection Agency)	$14,533	<0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; new, not ranked in Jul 2024–Jun 2025.
73	Informa Business Intelligence Inc. Through Informa TECH Holdings LLC Top agencies DISA (Defense Information Systems Agency)	$13,200	<0.1%	Rank history: not on the FY2021–FY2024 lists and #30 in FY2025; down 29 since Jul 2024–Jun 2025.
74	Partners for Advancing Clinical Education, LLC Top agencies DHA (Defense Health Agency)	$12,375	<0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; new, not ranked in Jul 2024–Jun 2025.
75	Medhub LLC Top agencies DHA (Defense Health Agency)	$11,840	<0.1%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 9 since Jul 2024–Jun 2025.
76	I-2-I Solutions, Inc. Top agencies Commerce (Department of Commerce)	$11,529	<0.1%	Rank history: not on the FY2021–FY2023 lists, #81 in FY2024 and not on the FY2025 list; up 23 since Jul 2024–Jun 2025.
77	Asis International Inc. Top agencies DHS (Department of Homeland Security)	$10,535	<0.1%	Rank history: #54 in FY2021, #59 in FY2022, not on the FY2023 list, #48 in FY2024 and #42 in FY2025; down 30 since Jul 2024–Jun 2025.
78	Council On Occupational Education, Inc. Top agencies DCSA (Defense Counterintelligence and Security Agency)	$10,095	<0.1%	Rank history: not on the FY2021–FY2023 lists, #95 in FY2024 and #88 in FY2025; unchanged since Jul 2024–Jun 2025.
79	United States Parachute Association, Inc. Top agencies Army (Department of the Army)	$9,999	<0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 8 since Jul 2024–Jun 2025.
80	Amboss SE Top agencies DHA (Defense Health Agency)	$9,855	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
81	American College of Cardiology Foundation Top agencies VA (Department of Veterans Affairs)	$8,950	<0.1%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; up 10 since Jul 2024–Jun 2025.
82	Kaminsky, Sullenberger & Associates, Inc. Top agencies USDA (Department of Agriculture)	$8,870	<0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; up 8 since Jul 2024–Jun 2025.
83	American College of Radiology Top agencies VA (Department of Veterans Affairs)	$8,500	<0.1%	Rank history: #86 in FY2021, #100 in FY2022, not on the FY2023 list, #77 in FY2024 and #98 in FY2025; down 18 since Jul 2024–Jun 2025.
84	Oregon Health Authority-Public Health Top agencies EPA (Environmental Protection Agency)	$7,700	<0.1%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; down 5 since Jul 2024–Jun 2025.
85	Collaborative Testing Services, Inc. Top agencies Navy (Department of the Navy)	$6,093	<0.1%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; up 12 since Jul 2024–Jun 2025.
86	Association for the Accreditation of Human Research Protection Programs, Inc. Top agencies VA (Department of Veterans Affairs)	$5,960	<0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; up 7 since Jul 2024–Jun 2025.
87	American Psychological Association Top agencies DHA (Defense Health Agency)	$5,176	<0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; up 7 since Jul 2024–Jun 2025.
88	Midwest Radiation Physicists, Inc. Top agencies HHS (Department of Health and Human Services)	$4,300	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 8 since Jul 2024–Jun 2025.
89	Public Health Accreditation Board Top agencies DHA (Defense Health Agency)	$4,200	<0.1%	Rank history: not on the FY2021–FY2023 lists, #65 in FY2024 and #85 in FY2025; down 38 since Jul 2024–Jun 2025.
90	Green Business Certification, Inc. Top agencies Army (Department of the Army)	$3,950	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 14 since Jul 2024–Jun 2025.
91	Precision Air Balancing Company Top agencies DOJ (Department of Justice)	$3,500	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 9 since Jul 2024–Jun 2025.
92	Springshare LLC Top agencies DHA (Defense Health Agency)	$3,167	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 10 since Jul 2024–Jun 2025.
93	Academy of Nutrition & Dietetics Top agencies HHS (Department of Health and Human Services)	$2,830	<0.1%	Rank history: not on the FY2021–FY2023 lists, #83 in FY2024 and not on the FY2025 list; down 5 since Jul 2024–Jun 2025.
94	Alain Dalencourt Top agencies HHS (Department of Health and Human Services)	$1,976	<0.1%	Rank history: not on the FY2021–FY2024 lists and #69 in FY2025; down 25 since Jul 2024–Jun 2025.
95	National Quality Assurance - U.s.a., Inc. Top agencies DOJ (Department of Justice)	$835	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.

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95 of 96 contractors listed here. See the rest on GovTribe.

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 $54.7 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. 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 Jul 2024–Jun 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

Who were the top 10 PSC R420 contractors in Jul 2025–Jun 2026?

1. Joint Commission On Accreditation of Healthcare Organizations ($15M), 2. College of American Pathologists ($7.43M), 3. National Committee for Quality Assurance ($6M), 4. Tetrad Digital Integrity LLC ($4.06M), 5. Colossal Contracting LLC ($3.05M), 6. Pherson Associates, LLC ($2.51M), 7. Relx Inc. ($2.02M), 8. Old Harbor Solutions LLC ($1.65M), 9. American College of Surgeons ($1.54M), 10. American Association of Blood Banks, Inc. ($1.12M).

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