Maryland

Most-documented employers

Ordered by the number of federal systems, then records, associated with the entity — an ordering of record volume, not of conduct.

1. Ruppert Landscape, LLCLaytonsville, MD · Administrative, Support & Waste Services5 sources · 26 rec.
2. The Johns Hopkins HospitalBaltimore, MD · Health Care & Social Assistance5 sources · 26 rec.
3. Atlantic Refinishing & Restoration, Inc.Beltsville, MD · Construction5 sources · 15 rec.
4. Piedmont Airlines, Inc.Salisbury, MD · Transportation & Warehousing5 sources · 12 rec.
5. Mclean Contracting CompanyGlen Burnie, MD · Construction5 sources · 10 rec.
6. University of Maryland College ParkCollege Park, MD · Educational Services4 sources · 181 rec.
7. Hughes Network Systems LLCGermantown, MD · Manufacturing4 sources · 97 rec.
8. The Whiting-Turner Contracting Companydba Whiting-TurnerBaltimore, MD · Construction4 sources · 47 rec.
9. Anne Arundel County Public SchoolsAnnapolis, MD · Educational Services4 sources · 39 rec.
10. Baltimore Gas and Electric Companydba Bge An Exelon CompanyBaltimore, MD · Utilities4 sources · 35 rec.
11. Baltimore City Public SchoolsBaltimore, MD · Educational Services4 sources · 35 rec.
12. Towson UniversityTowson, MD · Educational Services4 sources · 32 rec.
13. Clark Construction Group, LLCdba Clark ConstructionBethesda, MD · Construction4 sources · 22 rec.
14. 7-ElevenBaltimore, MD · Retail Trade4 sources · 21 rec.
15. Morgan State UniversityBaltimore, MD · Educational Services4 sources · 18 rec.
16. Concrete General, Inc.Gaithersburg, MD · Construction4 sources · 17 rec.
17. Meritus Medical Center, Inc.Hagerstown, MD · Health Care & Social Assistance4 sources · 16 rec.
18. Medstar Health, Inc.dba Medstar Health Home CareColumbia, MD · Health Care & Social Assistance4 sources · 15 rec.
19. Worcester Eisenbrandt, Inc.Baltimore, MD · Construction4 sources · 13 rec.
20. Structural Preservation Systems, LLCColumbia, MD · Construction4 sources · 12 rec.
21. D M Bowman IncWilliamsport, MD · Transportation & Warehousing4 sources · 12 rec.
22. Giant Food LLCJessup, MD · Retail Trade4 sources · 12 rec.
23. Giant of Maryland LLCdba Giant FoodJessup, MD · Retail Trade4 sources · 12 rec.
24. Gray & Son, Inc.Taneytown, MD · Construction4 sources · 11 rec.
25. Civil Construction, LLCHyattsville, MD · Construction4 sources · 11 rec.
26. Waste Management of Maryland, Inc.dba Waste ManagementGaithersburg, MD · Administrative, Support & Waste Services4 sources · 11 rec.
27. Mid-Atlantic Baking Company, LLCBaltimore, MD · Manufacturing4 sources · 10 rec.
28. Long FenceCapitol Heights, MD · Construction4 sources · 10 rec.
29. Digging & Rigging, Inc.Hagerstown, MD · Construction4 sources · 10 rec.
30. Lockheed MartinBethesda, MD · Construction4 sources · 10 rec.
31. City of Baltimoredba Baltimore City Police DepartmentBaltimore, MD4 sources · 10 rec.
32. Reliable Contracting Company, Inc.Gambrills, MD · Construction4 sources · 10 rec.
33. Royal FarmsBaltimore, MD · Retail Trade4 sources · 10 rec.
34. Bates Trucking Company IncorporatedBladensburg, MD · Administrative, Support & Waste Services4 sources · 9 rec.
35. Potomac Abatement, Inc.Jessup, MD · Construction4 sources · 9 rec.
36. Rivers Construction Group, Ltd.Jessup, MD · Construction4 sources · 9 rec.
37. Lonza Walkersville, Inc.dba LonzaWalkersville, MD · Manufacturing4 sources · 9 rec.
38. Mcdaniel College, Inc.Westminster, MD · Educational Services4 sources · 9 rec.
39. Flippo Construction Company, Inc.Forestville, MD · Construction4 sources · 8 rec.
40. Tate Access Floors, Inc.dba Tate, Inc.Columbia, MD · Manufacturing4 sources · 8 rec.
41. Machado Construction Company, Inc.Baltimore, MD · Manufacturing4 sources · 7 rec.
42. Miller & Long Co IncBethesda, MD · Construction4 sources · 7 rec.
43. Pessoa Construction CompanyFairmount Heights, MD · Mining, Quarrying, & Oil and Gas Extraction4 sources · 7 rec.
44. Iron Fabrication Services Inc.Annapolis Junction, MD · Manufacturing4 sources · 7 rec.
45. Loyola University MarylandBaltimore, MD · Educational Services4 sources · 7 rec.
46. Joseph Smith & Sons, Inc.dba RecovermatCapitol Heights, MD · Wholesale Trade4 sources · 6 rec.
47. Miscellaneous Metals, Inc.Frederick, MD · Manufacturing4 sources · 6 rec.
48. Southern Insulation Incdba Southern Insulation - National Gallery of ArtHyattsville, MD · Construction4 sources · 6 rec.
49. Fidelity Engineering, LLCdba Fidelity Engineering Corporation Fidelity Power Systems Fidelity MechanicalBeltsville, MD · Construction4 sources · 6 rec.
50. Bill Miller Equipment Sales, Inc.Eckhart Mines, MD · Wholesale Trade4 sources · 6 rec.
51. Mayflower Textile Services, Co.Baltimore, MD · Other Services4 sources · 6 rec.
52. Delaware Elevator, Inc.Salisbury, MD · Construction4 sources · 6 rec.
53. Ati Performance ProductsBaltimore, MD · Manufacturing4 sources · 5 rec.
54. John C. Grimberg Company, Inc.Rockville, MD · Construction4 sources · 5 rec.
55. Hilgartner Natural Stone Co., Inc.Baltimore, MD · Manufacturing4 sources · 5 rec.
56. Tecta America East, LLCBaltimore, MD · Construction4 sources · 5 rec.
57. Kogok CorporationUpper Marlboro, MD · Manufacturing4 sources · 5 rec.
58. Nelson Precast Products, LLCdba Nelson PrecastBaltimore, MD · Manufacturing4 sources · 5 rec.
59. Reglas Painting Co Inc.Baltimore, MD · Construction4 sources · 5 rec.
60. Nationwide Motor Sales Corpdba Nationwide Limousine ServicesTimonium, MD · Retail Trade4 sources · 5 rec.
61. Ligon & Ligon, IncorporatedBaltimore, MD · Construction4 sources · 5 rec.
62. Colossal ContractorsBurtonsville, MD · Construction4 sources · 5 rec.
63. Kci Technologies Inc.dba KciSparks, MD · Professional, Scientific & Technical Services4 sources · 5 rec.
64. Edward T Clark & Sonsdba Clarks Ace HardwareEllicott City, MD · Wholesale Trade4 sources · 5 rec.
65. Maryland PackagingHalethorpe, MD · Accommodation & Food Services4 sources · 5 rec.
66. Beltway IronPrince Frederick, MD · Construction4 sources · 4 rec.
67. Francis O Day Co Incdba F.O. Day Company, IncRockville, MD · Construction4 sources · 4 rec.
68. Lighting MaintenanceHarmans, MD · Construction4 sources · 4 rec.
69. Gms Mine Repair & Maintenance, Inc.dba Gms Mine RepairMountain Lake Park, MD · Mining, Quarrying, & Oil and Gas Extraction4 sources · 4 rec.
70. Perdue Farmsdba Perdue Farms SalisburySalisbury, MD · Agriculture, Forestry, Fishing & Hunting4 sources · 4 rec.
71. Johns Hopkins UniversityBaltimore, MD · Educational Services3 sources · 386 rec.
72. Verizon Maryland IncBaltimore, MD · Information3 sources · 159 rec.
73. University of Maryland BaltimoreBaltimore, MD · Educational Services3 sources · 109 rec.
74. Howard Hughes Medical Institutedba HhmiChevy Chase, MD · Professional, Scientific & Technical Services3 sources · 102 rec.
75. Mayor and City Council of Baltimoredba City of BaltimoreBaltimore, MD · Public Administration3 sources · 71 rec.
76. U.S. Postal ServiceBaltimore, MD · Transportation & Warehousing3 sources · 62 rec.
77. University of Maryland, Baltimore CountyBaltimore, MD · Educational Services3 sources · 33 rec.
78. Delmarva Power & Light CoSalisbury, MD · Utilities3 sources · 33 rec.
79. Rummel, Klepper & Kahl, LLPBaltimore, MD · Professional, Scientific & Technical Services3 sources · 31 rec.
80. Baltimore County Public Schoolsdba Dulaney High SchoolBaltimore, MD · Educational Services3 sources · 27 rec.
81. The Henry M. Jackson FoundationBethesda, MD · Professional, Scientific & Technical Services3 sources · 25 rec.
82. Maryland State Highway AdministrationAnnapolis, MD · Public Administration3 sources · 23 rec.
83. Ppe Casino Resorts Maryland LLCdba Maryland Live! CasinoHanover, MD · Accommodation & Food Services3 sources · 22 rec.
84. Prince George'S County Public SchoolsUpper Marlboro, MD · Educational Services3 sources · 21 rec.
85. Dunkin DonutsFrederick, MD · Retail Trade3 sources · 21 rec.
86. University of Maryland Medical System Corporationdba University Specialty HospitalLinthicum, MD · Health Care & Social Assistance3 sources · 20 rec.
87. Montgomery County Governmentdba Montgomery County CorrectionalRockville, MD · Public Administration3 sources · 19 rec.
88. United Therapeutics CorporationSilver Spring, MD · Manufacturing3 sources · 16 rec.
89. Bowie State UniversityBowie, MD · Educational Services3 sources · 16 rec.
90. Asbestos Specialists, Inc.Elkridge, MD · Administrative, Support & Waste Services3 sources · 15 rec.
91. Meso Scale Diagnostics, LLCdba Meso Scale DiscoveryRockville, MD · Manufacturing3 sources · 14 rec.
92. Colonial Electric Company, Inc.Baltimore, MD · Construction3 sources · 14 rec.
93. Jason Pharmaceuticals, Inc.dba MedifastBaltimore, MD · Wholesale Trade3 sources · 14 rec.
94. Rosedale Roofing Company, Inc.Middle River, MD · Construction3 sources · 14 rec.
95. Ruff Roofers, Inc.Baltimore, MD · Construction3 sources · 14 rec.
96. Keller North America, Inc.Hanover, MD · Construction3 sources · 13 rec.
97. St. John Properties, Inc.Linthicum Heights, MD · Construction3 sources · 13 rec.
98. Miller Construction Inc.Laurel, MD · Construction3 sources · 12 rec.
99. Aerotek, Inc.Hanover, MD · Administrative, Support & Waste Services3 sources · 12 rec.
100. Dustin Construction, Inc.Fallston, MD · Construction3 sources · 12 rec.
101. Maryland Environmental ServiceCambridge, MD · Utilities3 sources · 12 rec.
102. Schuster Concrete Ready Mix LLCBaltimore, MD · Manufacturing3 sources · 12 rec.
103. Chaney EnterprisesGambrills, MD · Manufacturing3 sources · 12 rec.
104. Santos Construction, Inc.Baltimore, MD · Construction3 sources · 11 rec.
105. Belfast Valley Contractors, Inc.Baltimore, MD · Construction3 sources · 11 rec.
106. Elite Spice, Inc.Jessup, MD · Manufacturing3 sources · 11 rec.
107. Taylor Farms Maryland, Inc.Annapolis Junction, MD · Manufacturing3 sources · 11 rec.
108. Ecology Services, Inc.Columbia, MD · Administrative, Support & Waste Services3 sources · 11 rec.
109. Adventist Healthcare, Inc.dba Healthcare Facility - HospitalGaithersburg, MD · Health Care & Social Assistance3 sources · 11 rec.
110. Bragunier Masonry Contractors, Inc.dba Bragunier MasonryClear Spring, MD · Construction3 sources · 11 rec.
111. University of Maryland Medical CenterLinthicum, MD · Health Care & Social Assistance3 sources · 10 rec.
112. Atlas Container CorporationSevern, MD · Manufacturing3 sources · 10 rec.
113. Cumberland Concrete CorporationLavale, MD · Manufacturing3 sources · 10 rec.
114. Under Armour, Inc.Baltimore, MD · Wholesale Trade3 sources · 10 rec.
115. Schmidt Baking CompanyHalethorpe, MD · Manufacturing3 sources · 10 rec.
116. Brawner Builders, Inc.Gwynn Oak, MD · Construction3 sources · 10 rec.
117. Seh Excavating, Inc.Finksburg, MD · Construction3 sources · 10 rec.
118. Mccormick & Company, Inc.Hunt Valley, MD · Manufacturing3 sources · 10 rec.
119. Callas Contractors, Inc.Hagerstown, MD · Construction3 sources · 9 rec.
120. Thomas, Bennett and Hunter, Inc.dba TbhHagerstown, MD · Manufacturing3 sources · 9 rec.
121. Southern States CooperativeCentreville, MD · Retail Trade3 sources · 9 rec.
122. Carter Machinery Company, IncorporatedMyersville, MD · Other Services3 sources · 9 rec.
123. Independent Can CompanyBelcamp, MD · Manufacturing3 sources · 9 rec.
124. Dairy Maid Dairy, LLCFrederick, MD · Manufacturing3 sources · 9 rec.
125. Melwood, Inc.Upper Marlboro, MD3 sources · 9 rec.
126. Curtis Bay Energy, IncBaltimore, MD · Administrative, Support & Waste Services3 sources · 9 rec.
127. Frederick Health Hospital, Inc.Frederick, MD · Health Care & Social Assistance3 sources · 9 rec.
128. State of MarylandAnnapolis, MD · Public Administration3 sources · 9 rec.
129. Johnson Crane Service, Inc.Beltsville, MD · Construction3 sources · 9 rec.
130. David A. Bramble, Inc.Chestertown, MD · Construction3 sources · 9 rec.
131. H&S Bakery, Inc.Baltimore, MD · Manufacturing3 sources · 9 rec.
132. Miller, Long & Arnold Co., Inc.Baltimore, MD · Construction3 sources · 8 rec.
133. Lindy'S Seafood IncWoolford, MD · Retail Trade3 sources · 8 rec.
134. Knorr Brake Company LLCWestminster, MD · Manufacturing3 sources · 8 rec.
135. The Poole and Kent CorporationBaltimore, MD · Construction3 sources · 8 rec.
136. W.M. Schlosser Co., Inc.Hyattsville, MD · Construction3 sources · 8 rec.
137. Novavax, Inc.Gaithersburg, MD · Manufacturing3 sources · 8 rec.
138. Brothers Services CompanyHampstead, MD · Construction3 sources · 8 rec.
139. Evapco IncTaneytown, MD · Manufacturing3 sources · 8 rec.
140. Interior Specialists, Inc.Baltimore, MD · Construction3 sources · 8 rec.
141. Potomac Construction IncHagerstown, MD · Construction3 sources · 8 rec.
142. W.R. Grace & Co. - Conn.Baltimore, MD · Manufacturing3 sources · 8 rec.
143. University of MarylandCollege Park, MD · Educational Services3 sources · 7 rec.
144. Products Support, LLCJessup, MD · Manufacturing3 sources · 7 rec.
145. Moscoso General Construction LLCFulton, MD · Construction3 sources · 7 rec.
146. Chevy Chase Contractors, Inc.Baltimore, MD · Construction3 sources · 7 rec.
147. Grunley Construction Company, IncRockville, MD · Construction3 sources · 7 rec.
148. WestatRockville, MD · Professional, Scientific & Technical Services3 sources · 7 rec.
149. Gilbert Foods Incdba Hearn KirkwoodHanover, MD · Wholesale Trade3 sources · 7 rec.
150. Duvinage LLCHagerstown, MD · Manufacturing3 sources · 7 rec.