Top 100 Contractors in NAICS 621512: Diagnostic Imaging Centers, FY2022

Name: Top 100 Contractors in NAICS 621512: Diagnostic Imaging Centers, FY2022
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2021 – Sep 30, 2022 Code page on GovTribe

The top 10 won 53% of FY2022 NAICS 621512 contract dollars

Contract obligations: $59,928,610 Net of deobligations, by contracts coded NAICS 621512
Contractors: 132 Parent companies with an obligation
Largest contractor: Valor Network, Inc. $12.8 million, 18.0% 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	Valor Network, Inc. Top agencies Army (Department of the Army) DHA (Defense Health Agency) DHS (Department of Homeland Security)	$12,808,786	18.0%	Rank history: #1 in FY2021, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2021.
2	Government Imaging Services LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USAF (Department of the Air Force)	$6,626,056	9.3%	Rank history: #2 in FY2021, #3 in FY2023, #4 in FY2024 and #3 in FY2025; unchanged since FY2021.
3	Vetmed Group LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$3,618,399	5.1%	Rank history: #4 in FY2021 and not on the FY2023–FY2025 lists; up 1 since FY2021.
4	Diagnostic Imaging Associates, Inc. Top agencies HHS (Department of Health and Human Services)	$2,881,343	4.1%	Rank history: #5 in FY2021, #8 in FY2023, #5 in FY2024 and #6 in FY2025; up 1 since FY2021.
5	Advanced Imaging Management, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$2,307,691	3.3%	Rank history: #6 in FY2021, #4 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2021.
6	Riverside Radiology and Interventional Associates, Inc. Top agencies VA (Department of Veterans Affairs)	$2,224,444	3.1%	Rank history: #9 in FY2021, #9 in FY2023, #9 in FY2024 and not on the FY2025 list; up 3 since FY2021.
7	Redhawk Group International, LLC Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$2,081,592	2.9%	Rank history: not on the FY2021 list, #6 in FY2023, #17 in FY2024 and #7 in FY2025; new.
8	Mystic Ventures Group LLC Top agencies VA (Department of Veterans Affairs)	$1,865,046	2.6%	Rank history: #3 in FY2021, #5 in FY2023, #6 in FY2024 and #5 in FY2025; down 5 since FY2021.
9	Dt-Trak Consulting, Inc. Top agencies HHS (Department of Health and Human Services)	$1,782,000	2.5%	Rank history: not on the FY2021 list, #11 in FY2023 and not on the FY2024–FY2025 lists; new.
10	Shared Medical Services Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$1,408,241	2.0%	Rank history: #31 in FY2021, #7 in FY2023, #8 in FY2024 and #8 in FY2025; up 21 since FY2021.
11	IS Healthcare LLC Top agencies VA (Department of Veterans Affairs)	$1,365,381	1.9%	Rank history: #10 in FY2021, #18 in FY2023, #16 in FY2024 and #11 in FY2025; down 1 since FY2021.
12	All Valley Imaging, L.l.c Top agencies HHS (Department of Health and Human Services)	$1,301,860	1.8%	Rank history: #11 in FY2021, #14 in FY2023, #14 in FY2024 and #17 in FY2025; down 1 since FY2021.
13	Government of the United States Through DLA Troop Support Top agencies DOJ (Department of Justice)	$1,277,301	1.8%	Rank history: not on the FY2021 list, #33 in FY2023, #79 in FY2024 and not on the FY2025 list; new.
14	Med-Share Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$1,243,158	1.8%	Rank history: #20 in FY2021, #16 in FY2023, #21 in FY2024 and #15 in FY2025; up 6 since FY2021.
15	Radiology Professional Management, LLC Top agencies VA (Department of Veterans Affairs)	$1,221,992	1.7%	Rank history: #12 in FY2021, #10 in FY2023, #10 in FY2024 and #32 in FY2025; down 3 since FY2021.
16	Maxmed Healthcare Inc. Top agencies USAF (Department of the Air Force)	$1,147,981	1.6%	Rank history: #14 in FY2021, #23 in FY2023, #12 in FY2024 and #14 in FY2025; down 2 since FY2021.
17	Insight Health Corp. Top agencies VA (Department of Veterans Affairs)	$1,079,407	1.5%	Rank history: #16 in FY2021, #12 in FY2023, #11 in FY2024 and not on the FY2025 list; down 1 since FY2021.
18	Ansible Government Solutions LLC Top agencies VA (Department of Veterans Affairs)	$1,018,865	1.4%	Rank history: not on the FY2021 list, #2 in FY2023, #2 in FY2024 and not on the FY2025 list; new.
19	Clinical Imaging Systems, Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$622,423	0.9%	Rank history: not on the FY2021 list, #17 in FY2023, #18 in FY2024 and #43 in FY2025; new.
20	Catalina Imaging, Inc. Top agencies USAF (Department of the Air Force)	$620,982	0.9%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #44 in FY2025; up 107 since FY2021.
21	Bronze Star Industries, Inc. Top agencies HHS (Department of Health and Human Services)	$604,800	0.9%	Rank history: #23 in FY2021, #20 in FY2023, #25 in FY2024 and #54 in FY2025; up 2 since FY2021.
22	Alliance Healthcare Services, Inc. Top agencies VA (Department of Veterans Affairs)	$579,300	0.8%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
23	Modular Devices Inc. Top agencies VA (Department of Veterans Affairs)	$570,000	0.8%	Rank history: #18 in FY2021 and not on the FY2023–FY2025 lists; down 5 since FY2021.
24	Xrad Tele-Services Inc. Top agencies DHS (Department of Homeland Security)	$516,363	0.7%	Rank history: #13 in FY2021 and not on the FY2023–FY2025 lists; down 11 since FY2021.
25	Shared Medical Technology, LLC Top agencies HHS (Department of Health and Human Services)	$500,000	0.7%	Rank history: not on the FY2021 list, #31 in FY2023, #28 in FY2024 and #23 in FY2025; new.
26	A&B Technical LLC Top agencies VA (Department of Veterans Affairs)	$489,810	0.7%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #36 in FY2025; new.
27	Dilligas Corp Top agencies HHS (Department of Health and Human Services)	$476,546	0.7%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
28	Kalispell Regional Medical Center Inc. Top agencies HHS (Department of Health and Human Services)	$458,784	0.6%	Rank history: #21 in FY2021, #89 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2021.
29	Mission Search International, Inc. Top agencies VA (Department of Veterans Affairs)	$420,950	0.6%	Rank history: #28 in FY2021, #40 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
30	Nitelines USA Inc. Top agencies VA (Department of Veterans Affairs)	$395,075	0.6%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
31	Dockside Imaging LLC Top agencies VA (Department of Veterans Affairs)	$378,240	0.5%	Rank history: #8 in FY2021, #29 in FY2023 and not on the FY2024–FY2025 lists; down 23 since FY2021.
32	Hamamatsu / Queen's Pet Imaging Center, LLC Top agencies Army (Department of the Army)	$349,307	0.5%	Rank history: #24 in FY2021, #21 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2021.
33	Healthtronics Stone Solutions, LLC Top agencies VA (Department of Veterans Affairs)	$342,200	0.5%	Rank history: #32 in FY2021, #78 in FY2023, not on the FY2024 list and #88 in FY2025; down 1 since FY2021.
34	Assured Imaging Womens Wellness of Southern Arizona LLC Top agencies HHS (Department of Health and Human Services)	$340,730	0.5%	Rank history: #52 in FY2021, #30 in FY2023, #22 in FY2024 and #38 in FY2025; up 18 since FY2021.
35	Northland Healthcare Alliance Top agencies HHS (Department of Health and Human Services)	$337,426	0.5%	Rank history: #43 in FY2021, #22 in FY2023, #27 in FY2024 and #22 in FY2025; up 8 since FY2021.
36	MXR Imaging, Inc. Top agencies VA (Department of Veterans Affairs)	$329,000	0.5%	Rank history: #47 in FY2021 and not on the FY2023–FY2025 lists; up 11 since FY2021.
37	Traversent Solutions Inc. Top agencies DOJ (Department of Justice)	$306,250	0.4%	Rank history: #37 in FY2021, #27 in FY2023, #26 in FY2024 and #26 in FY2025; unchanged since FY2021.
38	Correctional Diagnostic Imaging Inc. Top agencies DOJ (Department of Justice)	$306,224	0.4%	Rank history: #19 in FY2021, #50 in FY2023 and not on the FY2024–FY2025 lists; down 19 since FY2021.
39	OU Medicine Inc. Top agencies HHS (Department of Health and Human Services)	$300,000	0.4%	Rank history: #34 in FY2021, not on the FY2023 list, #46 in FY2024 and not on the FY2025 list; down 5 since FY2021.
40	Precise Information Systems & Professional Services Inc. Top agencies Army (Department of the Army)	$275,789	0.4%	Rank history: #42 in FY2021, #35 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2021.
41	Trinity Health Top agencies HHS (Department of Health and Human Services)	$255,000	0.4%	Rank history: not on the FY2021 list, #26 in FY2023 and not on the FY2024–FY2025 lists; new.
42	Unimed S.R.L. Top agencies USAF (Department of the Air Force)	$248,604	0.4%	Rank history: #41 in FY2021, #49 in FY2023, #41 in FY2024 and #48 in FY2025; down 1 since FY2021.
43	Medispace Diagnostics Ltd Top agencies USAF (Department of the Air Force)	$229,504	0.3%	Rank history: not on the FY2021 list, #39 in FY2023, #37 in FY2024 and not on the FY2025 list; new.
44	Unique Mobile Diagnostic Services Inc. Top agencies DOJ (Department of Justice)	$216,078	0.3%	Rank history: #30 in FY2021, #32 in FY2023, #43 in FY2024 and #25 in FY2025; down 14 since FY2021.
45	Sisters of Charity of Leavenworth Health System Through SCL Health - Montana Top agencies HHS (Department of Health and Human Services)	$210,000	0.3%	Rank history: #39 in FY2021, #53 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2021.
46	Navix Holdings Corp. Through Navix Diagnostix, Inc. Top agencies VA (Department of Veterans Affairs)	$195,680	0.3%	Rank history: not on the FY2021 list, not on the FY2023 list, #38 in FY2024 and not on the FY2025 list; new.
47	Ausdanbrook Properties Inc. Top agencies Army (Department of the Army)	$175,250	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
48	New Paradigm Technologies, LLC Top agencies VA (Department of Veterans Affairs)	$166,400	0.2%	Rank history: #44 in FY2021 and not on the FY2023–FY2025 lists; down 4 since FY2021.
49	Real Radiology, LLC Top agencies Army (Department of the Army)	$163,207	0.2%	Rank history: #22 in FY2021 and not on the FY2023–FY2025 lists; down 27 since FY2021.
50	Hologic, Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$156,828	0.2%	Rank history: #98 in FY2021, #34 in FY2023, #34 in FY2024 and #42 in FY2025; up 48 since FY2021.
51	Foxfire Scientific, Inc. Top agencies VA (Department of Veterans Affairs)	$137,608	0.2%	Rank history: #87 in FY2021, #65 in FY2023 and not on the FY2024–FY2025 lists; up 36 since FY2021.
52	White Mountain Radiology, P.L.L.C. Top agencies HHS (Department of Health and Human Services)	$123,475	0.2%	Rank history: #63 in FY2021, #15 in FY2023, #15 in FY2024 and #13 in FY2025; up 11 since FY2021.
53	Siemens Aktiengesellschaft Through Siemens Medical Solutions Usa, Inc. Top agencies VA (Department of Veterans Affairs)	$122,223	0.2%	Rank history: not on the FY2021 list, #58 in FY2023 and not on the FY2024–FY2025 lists; new.
54	General Electric Company 2 awardees, including GE Healthcare Inc. Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$120,316	0.2%	Rank history: #48 in FY2021, #37 in FY2023, #40 in FY2024 and #40 in FY2025; down 6 since FY2021.
55	Johnson Venture Management Solutions, Inc. Top agencies USAF (Department of the Air Force)	$113,151	0.2%	Rank history: #55 in FY2021, #44 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
56	American Correctional Healthcare, Inc. Top agencies DOJ (Department of Justice)	$104,500	0.1%	Rank history: #61 in FY2021, #60 in FY2023, #56 in FY2024 and #85 in FY2025; up 5 since FY2021.
57	The Vanderbilt University Top agencies HHS (Department of Health and Human Services)	$98,728	0.1%	Rank history: #40 in FY2021, #51 in FY2023 and not on the FY2024–FY2025 lists; down 17 since FY2021.
58	Cardiovascular Imaging Services, Inc. Top agencies VA (Department of Veterans Affairs)	$97,444	0.1%	Rank history: not on the FY2021 list, #52 in FY2023, #65 in FY2024 and #64 in FY2025; new.
59	Harris Jeniffer N Top agencies DHA (Defense Health Agency)	$93,960	0.1%	Rank history: #60 in FY2021 and not on the FY2023–FY2025 lists; up 1 since FY2021.
60	A-Bear Consult LLC Top agencies VA (Department of Veterans Affairs)	$86,400	0.1%	Rank history: #68 in FY2021, #48 in FY2023, #39 in FY2024 and #37 in FY2025; up 8 since FY2021.
61	Koninklijke Philips N.V. 2 awardees, including Cardionet, LLC and Philips North America LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$80,882	0.1%	Rank history: #95 in FY2021 and not on the FY2023–FY2025 lists; up 34 since FY2021.
62	A Medical Corporation Quantum Neuromonitoring Corporation Top agencies USAF (Department of the Air Force)	$72,600	0.1%	Rank history: #77 in FY2021, #43 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2021.
63	University of Oklahoma Top agencies VA (Department of Veterans Affairs)	$70,164	0.1%	Rank history: #66 in FY2021, #55 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2021.
64	Trillamed LLC Top agencies VA (Department of Veterans Affairs)	$66,821	0.1%	Rank history: #7 in FY2021 and not on the FY2023–FY2025 lists; down 57 since FY2021.
65	Hilandco LLC Top agencies HHS (Department of Health and Human Services)	$65,050	0.1%	Rank history: #82 in FY2021 and not on the FY2023–FY2025 lists; up 17 since FY2021.
66	Fuji Photo Film Company Limited (0000) Through Fujifilm Sonosite Inc. Top agencies VA (Department of Veterans Affairs)	$62,078	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
67	Good Type Inc. Top agencies HHS (Department of Health and Human Services)	$60,822	0.1%	Rank history: #58 in FY2021 and not on the FY2023–FY2025 lists; down 9 since FY2021.
68	Central Oregon Radiology Assoc., P.C. Top agencies HHS (Department of Health and Human Services)	$60,000	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #63 in FY2024 and not on the FY2025 list; new.
69	Tower Imaging LLC Top agencies VA (Department of Veterans Affairs)	$54,400	0.1%	Rank history: not on the FY2021 list, #63 in FY2023 and not on the FY2024–FY2025 lists; new.
70	Griglock Thomas M PHD Top agencies VA (Department of Veterans Affairs)	$53,650	0.1%	Rank history: #74 in FY2021, #69 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2021.
71	Ghost RX Inc. Top agencies VA (Department of Veterans Affairs)	$52,039	0.1%	Rank history: not on the FY2021 list, #71 in FY2023 and not on the FY2024–FY2025 lists; new.
72	Tech62 Inc. Top agencies VA (Department of Veterans Affairs)	$51,800	0.1%	Rank history: not on the FY2021 list, #77 in FY2023, #67 in FY2024 and #67 in FY2025; new.
73	Medical Tactile Inc. Top agencies HHS (Department of Health and Human Services)	$51,450	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
74	Soundwave Imaging, Inc. Top agencies DOJ (Department of Justice)	$47,955	0.1%	Rank history: #93 in FY2021, #57 in FY2023, #62 in FY2024 and #71 in FY2025; up 19 since FY2021.
75	Drabbs Darcie L Top agencies HHS (Department of Health and Human Services)	$47,650	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 26 since FY2021.
76	Utah Lithotripsy LP Top agencies VA (Department of Veterans Affairs)	$46,800	0.1%	Rank history: not on the FY2021 list, #72 in FY2023 and not on the FY2024–FY2025 lists; up 45 since FY2021.
77	Alliance Medical Limited Top agencies USAF (Department of the Air Force)	$43,925	0.1%	Rank history: #36 in FY2021 and not on the FY2023–FY2025 lists; down 41 since FY2021.
78	Healthtronics Inc. Through Fayetteville Lithotripters Limited Partnership - South Carolina II Top agencies VA (Department of Veterans Affairs)	$41,650	0.1%	Rank history: not on the FY2021 list, #76 in FY2023 and not on the FY2024–FY2025 lists; new.
79	Medirad Top agencies USAF (Department of the Air Force)	$39,297	0.1%	Rank history: #89 in FY2021 and not on the FY2023–FY2025 lists; up 10 since FY2021.
80	Sonoaid Imaging, Inc. Top agencies DOJ (Department of Justice)	$36,000	0.1%	Rank history: #75 in FY2021, #79 in FY2023, #58 in FY2024 and #61 in FY2025; down 5 since FY2021.
81	Cherokee Nation Healthcare Services, L.L.C. Top agencies Army (Department of the Army)	$35,833	0.1%	Rank history: #53 in FY2021 and not on the FY2023–FY2025 lists; down 28 since FY2021.
82	Trident USA Health Services Through Symphony Diagnostic Services NO. 1, LLC Top agencies DHA (Defense Health Agency)	$34,560	<0.1%	Rank history: #92 in FY2021, #80 in FY2023, #80 in FY2024 and not on the FY2025 list; up 10 since FY2021.
83	Cenmed Enterprises Inc. Top agencies WHS (DOD Washington Headquarters Service)	$34,380	<0.1%	Rank history: not on the FY2021 list, #84 in FY2023, #71 in FY2024 and #78 in FY2025; up 37 since FY2021.
84	Management Care Resources LLC Top agencies DOJ (Department of Justice)	$30,100	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
85	ST. Joseph Hospital Inc. Through National Jewish Health Top agencies VA (Department of Veterans Affairs)	$28,716	<0.1%	Rank history: not on the FY2021 list, #88 in FY2023, #75 in FY2024 and not on the FY2025 list; new.
86	Gilman, Carla Top agencies HHS (Department of Health and Human Services)	$26,280	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 16 since FY2021.
87	Onrad, Inc. Top agencies HHS (Department of Health and Human Services)	$25,622	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
88	Prodo Laboratories, Inc. Top agencies HHS (Department of Health and Human Services)	$25,000	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
89	M2S, Inc. Top agencies VA (Department of Veterans Affairs)	$24,820	<0.1%	Rank history: #80 in FY2021, #83 in FY2023 and not on the FY2024–FY2025 lists; down 9 since FY2021.
90	Agfa Healthcare Corporation 2 awardees, including Agfa Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$24,167	<0.1%	Rank history: #99 in FY2021 and not on the FY2023–FY2025 lists; up 9 since FY2021.
91	Edger Associates, Inc. Top agencies VA (Department of Veterans Affairs)	$23,480	<0.1%	Rank history: #85 in FY2021, #75 in FY2023, #70 in FY2024 and #66 in FY2025; down 6 since FY2021.
92	Creative Biolabs Inc. Top agencies HHS (Department of Health and Human Services)	$23,398	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
93	Indicate Technologies, Inc. Top agencies VA (Department of Veterans Affairs)	$22,560	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
94	Covidien LP Through Covidien Sales LLC Top agencies VA (Department of Veterans Affairs)	$21,000	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
95	NOX Health Group, Inc. Top agencies HHS (Department of Health and Human Services)	$20,475	<0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #78 in FY2024 and not on the FY2025 list; new.
96	Modern Insight, LLC Top agencies HHS (Department of Health and Human Services)	$19,936	<0.1%	Rank history: #57 in FY2021 and not on the FY2023–FY2025 lists; down 39 since FY2021.
97	Autoclear LLC Top agencies VA (Department of Veterans Affairs)	$19,000	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 29 since FY2021.
98	1ST American Medical Distributors, Inc. Top agencies VA (Department of Veterans Affairs)	$17,475	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
99	Physician's Mobile X-Ray, Inc. Top agencies Army (Department of the Army)	$17,225	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 10 since FY2021.
100	Zoll Medical Corporation Top agencies DHA (Defense Health Agency)	$16,810	<0.1%	Rank history: not on the FY2021 list, #99 in FY2023 and not on the FY2024–FY2025 lists; new.

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100 of 132 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 $71 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.
Fiscal year 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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 621512 contractors in FY2022?

1. Valor Network, Inc. ($12.8M), 2. Government Imaging Services LLC ($6.63M), 3. Vetmed Group LLC ($3.62M), 4. Diagnostic Imaging Associates, Inc. ($2.88M), 5. Advanced Imaging Management, LLC ($2.31M), 6. Riverside Radiology and Interventional Associates, Inc. ($2.22M), 7. Redhawk Group International, LLC ($2.08M), 8. Mystic Ventures Group LLC ($1.87M), 9. Dt-Trak Consulting, Inc. ($1.78M), 10. Shared Medical Services Inc. ($1.41M).

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