Top 100 Contractors in PSC Q517: Pharmacy Services, FY2021

Name: Top 100 Contractors in PSC Q517: Pharmacy Services, FY2021
Creator: GovTribe

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

The top 10 won 61% of FY2021 PSC Q517 contract dollars

Contract obligations: $160,767,357 Net of deobligations, by contracts coded PSC Q517
Contractors: 135 Parent companies with an obligation
Largest contractor: Teamstaff Inc. $59.6 million, 31.8% 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	Teamstaff Inc. Through DLH Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$59,580,760	31.8%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #43 in FY2025; unchanged since FY2020.
2	Luke & Associates, Inc. Top agencies DHA (Defense Health Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$14,413,046	7.7%	Rank history: #2 in FY2022, #2 in FY2023, #8 in FY2024 and not on the FY2025 list; up 5 since FY2020.
3	Provizor Federal Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Army (Department of the Army)	$8,244,011	4.4%	Rank history: #8 in FY2022, #9 in FY2023, #16 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
4	Potomac Healthcare Solutions, LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$6,747,698	3.6%	Rank history: #6 in FY2022, #4 in FY2023, #5 in FY2024 and #4 in FY2025; down 1 since FY2020.
5	Mercalis Inc. Top agencies HHS (Department of Health and Human Services)	$4,844,480	2.6%	Rank history: #7 in FY2022, #3 in FY2023, #4 in FY2024 and not on the FY2025 list; up 1 since FY2020.
6	Abbott Laboratories 2 awardees, including Abbott Rapid DX North America LLC Top agencies DOJ (Department of Justice)	$4,844,344	2.6%	Rank history: #42 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
7	Abbott Rapid DX North America LLC Top agencies DOJ (Department of Justice)	$4,392,352	2.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
8	Distinctive Health Spectrum Care JV LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$4,103,281	2.2%	Rank history: #5 in FY2022, #6 in FY2023, #12 in FY2024 and not on the FY2025 list; down 3 since FY2020.
9	Readiforce Government Solutions LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$3,517,055	1.9%	Rank history: #14 in FY2022, #18 in FY2023, not on the FY2024 list and #72 in FY2025; up 1 since FY2020.
10	Matrix Providers Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$3,106,039	1.7%	Rank history: #10 in FY2022, #7 in FY2023, #7 in FY2024 and #10 in FY2025; up 40 since FY2020.
11	Enterprise Resource Planning International, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$2,290,831	1.2%	Rank history: #12 in FY2022, #8 in FY2023, #18 in FY2024 and #5 in FY2025; up 7 since FY2020.
12	Quality Staffing Solutions Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$2,072,577	1.1%	Rank history: #17 in FY2022, #10 in FY2023, #17 in FY2024 and #11 in FY2025; up 40 since FY2020.
13	Heritage Health Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$1,915,873	1.0%	Rank history: #30 in FY2022, not on the FY2023–FY2024 lists and #32 in FY2025; down 5 since FY2020.
14	Wong Pharmacy Services, Inc. Top agencies VA (Department of Veterans Affairs)	$1,771,884	0.9%	Rank history: #60 in FY2022, #94 in FY2023, #90 in FY2024 and not on the FY2025 list; unchanged since FY2020.
15	Palisade Strategies, LLC Top agencies VA (Department of Veterans Affairs)	$1,741,372	0.9%	Rank history: #16 in FY2022, #20 in FY2023, #24 in FY2024 and #13 in FY2025; up 17 since FY2020.
16	Decypher Technologies Ltd Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$1,579,016	0.8%	Rank history: #23 in FY2022, #25 in FY2023, #11 in FY2024 and #15 in FY2025; up 12 since FY2020.
17	Palisade-Heritage JV LLC Top agencies VA (Department of Veterans Affairs)	$1,571,461	0.8%	Rank history: #20 in FY2022, #12 in FY2023, #10 in FY2024 and #39 in FY2025; up 17 since FY2020.
18	UnitedHealth Group Incorporated 2 awardees, including Optum Pharmacy 601, LLC Top agencies VA (Department of Veterans Affairs)	$1,533,955	0.8%	Rank history: #4 in FY2022, #23 in FY2023, not on the FY2024 list and #16 in FY2025; down 9 since FY2020.
19	Dilligas Corp Top agencies USAF (Department of the Air Force)	$1,419,019	0.8%	Rank history: #35 in FY2022, #16 in FY2023, #3 in FY2024 and #3 in FY2025; up 8 since FY2020.
20	Caduceus Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) DOJ (Department of Justice)	$1,315,110	0.7%	Rank history: #21 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
21	Nationwide Pharmaceutical LLC Top agencies VA (Department of Veterans Affairs)	$1,288,236	0.7%	Rank history: #18 in FY2022 and not on the FY2023–FY2025 lists; down 10 since FY2020.
22	Emerge Solutions Group LLC Top agencies USAF (Department of the Air Force)	$1,279,449	0.7%	Rank history: #22 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
23	A-Team Solutions LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$1,249,608	0.7%	Rank history: #11 in FY2022 and not on the FY2023–FY2025 lists; down 7 since FY2020.
24	Eagle Global Scientific, LLC Top agencies Army (Department of the Army)	$1,215,024	0.6%	Rank history: #29 in FY2022, #26 in FY2023, not on the FY2024 list and #25 in FY2025; new, not ranked in FY2020.
25	Optum Pharmacy 601, LLC Top agencies VA (Department of Veterans Affairs)	$1,200,000	0.6%	Rank history: not on the FY2022–FY2025 lists; down 3 since FY2020.
26	Sterling Medical Corporation Through Sterling Medical Associates, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$1,196,900	0.6%	Rank history: #19 in FY2022, #13 in FY2023, #34 in FY2024 and not on the FY2025 list; down 3 since FY2020.
27	Planned Systems International Inc. Through Quarterline Consulting Services, LLC Top agencies USAF (Department of the Air Force)	$1,188,972	0.6%	Rank history: #26 in FY2022, #30 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
28	AB Staffing Solutions LLC Top agencies HHS (Department of Health and Human Services)	$1,180,625	0.6%	Rank history: #13 in FY2022, #11 in FY2023, #9 in FY2024 and not on the FY2025 list; up 18 since FY2020.
29	Maxmed Saratoga JV LLC Top agencies Army (Department of the Army)	$1,178,870	0.6%	Rank history: #32 in FY2022, #22 in FY2023, #45 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
30	Dt-Trak Consulting, Inc. Top agencies HHS (Department of Health and Human Services)	$1,072,112	0.6%	Rank history: #25 in FY2022, #14 in FY2023, #26 in FY2024 and #19 in FY2025; up 26 since FY2020.
31	Appddictionstudio Limited Liability Company Top agencies Army (Department of the Army)	$935,975	0.5%	Rank history: #31 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
32	Millbrook Support Services Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$854,376	0.5%	Rank history: #47 in FY2022, #57 in FY2023, #15 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
33	Soliant Physician Staffing LLC Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$817,594	0.4%	Rank history: #43 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; down 14 since FY2020.
34	MPF Federal, LLC Top agencies Army (Department of the Army)	$718,741	0.4%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
35	Texas TECH University System Through Texas TECH University Health Sciences Center Top agencies VA (Department of Veterans Affairs)	$687,420	0.4%	Rank history: #40 in FY2022, #48 in FY2023, #37 in FY2024 and not on the FY2025 list; up 12 since FY2020.
36	Saratoga Medical Center, Inc. Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency)	$682,925	0.4%	Rank history: #34 in FY2022, #47 in FY2023, #31 in FY2024 and #6 in FY2025; down 23 since FY2020.
37	The Arora Group, Inc. Top agencies DHA (Defense Health Agency)	$677,870	0.4%	Rank history: #36 in FY2022, #38 in FY2023, #57 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
38	Frontline National LLC Top agencies USAF (Department of the Air Force)	$619,739	0.3%	Rank history: #38 in FY2022, #42 in FY2023, #85 in FY2024 and not on the FY2025 list; down 5 since FY2020.
39	Scriptpro LLC Through Scriptpro USA Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$604,267	0.3%	Rank history: #54 in FY2022, #66 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
40	A2A Integrated Logistics Inc. Top agencies VA (Department of Veterans Affairs)	$601,385	0.3%	Rank history: #44 in FY2022, #28 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
41	Vortex Solutions, LLC Top agencies USAF (Department of the Air Force)	$569,549	0.3%	Rank history: #37 in FY2022, #44 in FY2023, not on the FY2024 list and #9 in FY2025; down 6 since FY2020.
42	Ahs Staffing LLC Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$541,218	0.3%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; up 25 since FY2020.
43	Ghost RX Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$531,855	0.3%	Rank history: #56 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
44	Cyber Synergy & Reef Systems LLC Top agencies Army (Department of the Army)	$531,107	0.3%	Rank history: #33 in FY2022, #41 in FY2023, #75 in FY2024 and #38 in FY2025; new, not ranked in FY2020.
45	Management Enterprise Development & Services Inc. Top agencies Army (Department of the Army)	$504,672	0.3%	Rank history: not on the FY2022–FY2025 lists; down 21 since FY2020.
46	Disabled Veterans Hawaii LLC Top agencies VA (Department of Veterans Affairs)	$487,180	0.3%	Rank history: #85 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
47	Magnificus Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$423,934	0.2%	Rank history: #41 in FY2022, #27 in FY2023, #14 in FY2024 and #24 in FY2025; down 11 since FY2020.
48	Dependable Staffing Services LLC Top agencies HHS (Department of Health and Human Services)	$405,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
49	Bliss Pharmacy Services LLC Top agencies VA (Department of Veterans Affairs)	$377,481	0.2%	Rank history: #28 in FY2022, #29 in FY2023, #30 in FY2024 and #23 in FY2025; up 44 since FY2020.
50	Global Consulting International, Incorporated Top agencies USAF (Department of the Air Force)	$360,594	0.2%	Rank history: #50 in FY2022, #34 in FY2023, #42 in FY2024 and #41 in FY2025; down 10 since FY2020.
51	Stratatech Corporation Through INO Therapeutics LLC Top agencies VA (Department of Veterans Affairs)	$344,127	0.2%	Rank history: not on the FY2022 list, #36 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
52	C & E Pharmacy Services, LLC Top agencies VA (Department of Veterans Affairs)	$334,233	0.2%	Rank history: #58 in FY2022, not on the FY2023 list, #54 in FY2024 and #55 in FY2025; down 11 since FY2020.
53	RES-Care Inc. Through Pharmerica Corp Top agencies AFRH (Armed Forces Retirement Home)	$311,604	0.2%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
54	MEI Services, Inc. Top agencies AFRH (Armed Forces Retirement Home)	$294,019	0.2%	Rank history: #61 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
55	State of Louisiana 2 awardees, including Department of Veterans Affairs Louisiana and Northwest La War Veterans Home Top agencies VA (Department of Veterans Affairs)	$272,234	0.1%	Rank history: not on the FY2022–FY2023 lists, #61 in FY2024 and not on the FY2025 list; down 25 since FY2020.
56	Accredo Health Group Inc. Through Express Scripts Inc. Top agencies HHS (Department of Health and Human Services)	$245,900	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
57	Platinum Business Corporation Top agencies USAF (Department of the Air Force)	$237,421	0.1%	Rank history: #62 in FY2022, #83 in FY2023 and not on the FY2024–FY2025 lists; down 20 since FY2020.
58	Akahi Ingenesis Partners LLC Top agencies USAF (Department of the Air Force)	$227,578	0.1%	Rank history: #63 in FY2022, #15 in FY2023, #22 in FY2024 and #27 in FY2025; up 33 since FY2020.
59	Pacific Compounding Pharmacy and Consultations, Inc. Top agencies VA (Department of Veterans Affairs)	$225,825	0.1%	Rank history: #51 in FY2022, #54 in FY2023, #64 in FY2024 and not on the FY2025 list; down 14 since FY2020.
60	RPH Temp Service, Inc. Top agencies HHS (Department of Health and Human Services)	$220,608	0.1%	Rank history: not on the FY2022–FY2025 lists; up 29 since FY2020.
61	GLC On-The-Go, Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$214,092	0.1%	Rank history: #24 in FY2022, #32 in FY2023, #39 in FY2024 and #74 in FY2025; up 15 since FY2020.
62	Certified Technical Experts, Inc. Top agencies USAF (Department of the Air Force)	$198,086	0.1%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
63	1 Sync Technologies, LLC Top agencies USAF (Department of the Air Force)	$194,822	0.1%	Rank history: #67 in FY2022, #49 in FY2023, #46 in FY2024 and #80 in FY2025; down 5 since FY2020.
64	Veterans Healthcare Supply Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$186,238	0.1%	Rank history: #82 in FY2022, #72 in FY2023, #70 in FY2024 and #63 in FY2025; new, not ranked in FY2020.
65	Centralcare, Incorporated Top agencies USAF (Department of the Air Force)	$181,190	0.1%	Rank history: #69 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
66	J.e. Federal Enterprises, Llc. Top agencies VA (Department of Veterans Affairs)	$178,666	0.1%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; up 11 since FY2020.
67	Cimeon Koebel Top agencies DHA (Defense Health Agency)	$176,561	0.1%	Rank history: #72 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
68	KIM Sun BOM Top agencies DHA (Defense Health Agency)	$171,216	0.1%	Rank history: #77 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
69	United Planning Organization Top agencies VA (Department of Veterans Affairs)	$169,433	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Turner Pharmacist Staffing & Consulting LLC Top agencies HHS (Department of Health and Human Services)	$166,400	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
71	Byrd Ralph D Top agencies Navy (Department of the Navy)	$162,864	0.1%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
72	C & A Industries, Inc. Through Aureus Medical Management Services LLC Top agencies HHS (Department of Health and Human Services)	$158,862	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	Stevenson Jessica Marie Top agencies DHA (Defense Health Agency)	$156,600	0.1%	Rank history: #80 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
74	South Dakota Board of Regents Through South Dakota State University Top agencies VA (Department of Veterans Affairs)	$152,391	0.1%	Rank history: #57 in FY2022, #70 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
75	Ihlenfeld Brian L Top agencies DHA (Defense Health Agency)	$149,760	0.1%	Rank history: #81 in FY2022 and not on the FY2023–FY2025 lists; down 7 since FY2020.
76	Returns 'R' US, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$146,618	0.1%	Rank history: not on the FY2022–FY2025 lists; down 64 since FY2020.
77	Southwest Louisiana Veterans Home Top agencies VA (Department of Veterans Affairs)	$142,167	0.1%	Rank history: #76 in FY2022, #75 in FY2023, #74 in FY2024 and #73 in FY2025; down 2 since FY2020.
78	Career Medical Associates, Inc. Top agencies HHS (Department of Health and Human Services)	$138,148	0.1%	Rank history: #48 in FY2022, #37 in FY2023, #47 in FY2024 and #56 in FY2025; new, not ranked in FY2020.
79	Donald L. Mooney Enterprises, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$126,265	0.1%	Rank history: #73 in FY2022, #82 in FY2023, #88 in FY2024 and #59 in FY2025; new, not ranked in FY2020.
80	SA Solutions Inc. Top agencies Army (Department of the Army)	$115,780	0.1%	Rank history: #92 in FY2022, #99 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
81	GHR Healthcare, LLC Top agencies DOJ (Department of Justice)	$113,880	0.1%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
82	Davis Roger A Top agencies HHS (Department of Health and Human Services)	$106,901	0.1%	Rank history: not on the FY2022–FY2025 lists; down 10 since FY2020.
83	Takeda Pharmaceutical Company Limited Through Takeda Pharmaceuticals America, Inc. Top agencies DOJ (Department of Justice)	$106,858	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	Southeast Louisiana Veterans Home Top agencies VA (Department of Veterans Affairs)	$106,537	0.1%	Rank history: #59 in FY2022, not on the FY2023–FY2024 lists and #68 in FY2025; new, not ranked in FY2020.
85	Metro Accounting & Professional Services, LLC Top agencies USAF (Department of the Air Force)	$102,221	0.1%	Rank history: #90 in FY2022, #80 in FY2023, #79 in FY2024 and not on the FY2025 list; down 7 since FY2020.
86	International Business Machines Corporation 2 awardees Top agencies VA (Department of Veterans Affairs)	$90,900	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
87	Mitchell Consulting Services Group Inc. Top agencies HHS (Department of Health and Human Services)	$90,852	<0.1%	Rank history: #93 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
88	Kasey Badgett Pharmacy Services LLC Top agencies HHS (Department of Health and Human Services)	$89,900	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
89	R & M Reyes Enterprise, LLC Top agencies VA (Department of Veterans Affairs)	$78,000	<0.1%	Rank history: #94 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
90	Global Empire LLC Top agencies DOJ (Department of Justice)	$76,570	<0.1%	Rank history: not on the FY2022 list, #81 in FY2023, #81 in FY2024 and #95 in FY2025; up 8 since FY2020.
91	Mednovations Inc. Top agencies VA (Department of Veterans Affairs)	$72,641	<0.1%	Rank history: #95 in FY2022, #85 in FY2023, not on the FY2024 list and #97 in FY2025; down 20 since FY2020.
92	Reliable Pharmaceutical Returns, LLC Top agencies DHA (Defense Health Agency)	$63,066	<0.1%	Rank history: #91 in FY2022, #74 in FY2023, not on the FY2024 list and #83 in FY2025; new, not ranked in FY2020.
93	Crassociates, Inc. Top agencies DOJ (Department of Justice)	$59,852	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
94	Global Dynamics LLC Top agencies VA (Department of Veterans Affairs)	$55,643	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 41 since FY2020.
95	General Healthcare Resources Inc. Through GHR Healthcare, LLC Top agencies DOJ (Department of Justice)	$54,843	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
96	Challis Pharmacy Services LLC Top agencies HHS (Department of Health and Human Services)	$54,410	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 15 since FY2020.
97	Seqirus USA Inc. Top agencies DOJ (Department of Justice)	$52,783	<0.1%	Rank history: #97 in FY2022, not on the FY2023 list, #73 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
98	Outdate RX LLC Top agencies VA (Department of Veterans Affairs)	$48,500	<0.1%	Rank history: #78 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
99	Eppy's I.v. Inc. Top agencies VA (Department of Veterans Affairs)	$47,400	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
100	Omnicell, Inc. 2 awardees, including Enlivenhealth, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$45,982	<0.1%	Rank history: not on the FY2022–FY2023 lists, #78 in FY2024 and #49 in FY2025; down 27 since FY2020.

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100 of 135 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 $188 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 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 Q517 contractors in FY2021?

1. Teamstaff Inc. ($59.6M), 2. Luke & Associates, Inc. ($14.4M), 3. Provizor Federal Inc. ($8.24M), 4. Potomac Healthcare Solutions, LLC ($6.75M), 5. Mercalis Inc. ($4.84M), 6. Abbott Laboratories ($4.84M), 7. Abbott Rapid DX North America LLC ($4.39M), 8. Distinctive Health Spectrum Care JV LLC ($4.1M), 9. Readiforce Government Solutions LLC ($3.52M), 10. Matrix Providers Inc. ($3.11M).

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