| # | Company | Employees |
|---|---|---|
| 1 |
Long Island Jewish Medical Centerlij.northwell.edu
A leading health care provider offering comprehensive medical services, innovative treatments, and top-quality care to patients of all ages |
1,627 |
| 2 |
OEC Groupoecgroup.com
Global freight forwarding and logistics company providing ocean and air cargo transportation services with competitive rates and extensive worldwide network. |
1,030 |
| 3 |
PM Pediatric Carepmpediatriccare.com
Nation's largest provider of pediatric urgent care for children and young adults ages 0-26, offering coast-to-coast services including telemedicine and mental health care |
1,011 |
| 4 |
Cohen Children's Medical Centerchildrenshospital.northwell.edu
Specializing in pediatric care, this hospital provides top-notch medical services for children from premature babies to adolescents in a child-friendly environment |
676 |
| 5 |
ATC Healthcareatchealthcare.com
A healthcare staffing company with over 50 locations, providing nurses and healthcare professionals with innovative programs and solutions for staffing challenges |
553 |
| 6 |
WellLife Networkwelllifenetwork.org
The organization focuses on promoting the wellness of individuals in New York dealing with disabilities, mental illness, and addiction |
503 |
| 7 |
Parker Jewish Institute for Health Care and Rehabilitationparkerinstitute.org
Providing high-quality healthcare and rehabilitation services with a focus on excellence as the standard practice |
447 |
| 8 |
FlexStaff Careersflexstaff.org
Recruitment agency offering temporary, temporary-to-hire, and direct hire placements in various industries with personalized service for both job seekers and employers |
375 |
| 9 |
ICNA Relief USAicnarelief.org
The organization focuses on building healthy communities, supporting families, creating opportunities, and advocating for basic human needs with dignity |
372 |
| 10 |
M&J Engineeringmjengineers.com
Provider of multi-discipline consulting engineering, environmental, construction, and technology services to a range of clients across various states |
365 |
| 11 |
CareBuilders at Homecarebuildersathome.com
A national network providing non-medical home care services to the elderly and those in need of daily living assistance for over 30 years |
261 |
| 12 |
Dental365godental365.com
A full-service dental practice offering convenient and affordable modern dentistry services from board-certified specialists at multiple locations in the Northeast |
229 |
| 13 |
Herricks High Schoolherricks.org
A comprehensive high school with a competitive, multicultural student body, offering diverse educational programs and services to prepare students for higher education |
222 |
| 14 |
Advanced Dermatology, PCadvanceddermatologypc.com
A comprehensive medical, cosmetic, and surgical dermatology practice offering personalized treatments for skin conditions by board-certified physicians |
184 |
| 15 |
Up & Up Collectiveupandupfestival.com
An organization that organizes college music festivals through a network of student ambassadors, focusing on competition, mentorship, and creating memorable experiences |
183 |
| 16 |
Morstan General Agencymorstan.com
A MGA/Wholesale brokerage representing top industry companies, specializing in commercial and personal lines, workers compensation, life, health, aviation, and commercial auto insurance |
176 |
| 17 |
Mavericks Unitedmaverickslabs.io
Innovative company pushing technology boundaries through software development, hardware creation, and expert consulting services to help clients stay ahead of the curve |
171 |
| 18 |
Vitality Business Support Servicesvitalitybss.com
Specializing in Knowledge and Business Process Outsourcing services for US, UK, and Australian companies, providing cost savings and improved service delivery quality |
170 |
| 19 |
Cornerstone Rehabcornerstonerehab.com
Rehabilitation management and recruitment firm specializing in staffing for short & long term care facilities, actively hiring therapists |
137 |
| 20 |
Wisdom Square Technologieswisdomsquare.net
A global leader in IT services, leveraging a diverse team of experts to transform businesses through technology in India and the US |
61 |
| 21 |
Floors Unlimitedfloorsunl.com
Provider of a wide range of flooring solutions including carpet, wood, porcelain, and vinyl plank since 1928 Specializing in rubber tile and sheet vinyl |
50 |
| 22 |
US Energy Group, A Power-Flo Technologies Companyuse-group.com
A company specializing in energy management solutions and a wide range of electrical, mechanical, and industrial products and services |
27 |
| 23 |
Bullen Insurance Groupgvbullen.com
A boutique insurance brokerage specializing in personal and commercial insurance products, with expertise in advising high net worth individuals and family offices |
11 |
| 24 |
Connie Francisco Real Estate Groupconnierealestategroup.com
An experienced real estate company providing high quality services to help individuals with buying, selling, and renting properties, with a user-friendly website for information |
11 |
| 25 |
iCapitalFundingicapitalfunding.com
Specializes in pairing small and mid-sized businesses with the right lenders, offering fast and flexible financing options without the traditional bank hurdles |
5 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.
The same list elsewhere in United States
- The largest companies in the United States 91,669
- The largest companies in California 12,813
- The largest companies in New York State 10,485
- The largest companies in Texas 8,086
- The largest companies in Florida 4,945
- The largest companies in Illinois 4,175
- The largest companies in Pennsylvania 3,110
- The largest companies in Massachusetts 3,093
- The largest companies in Georgia 2,632
- The largest companies in Ohio 2,618
- The largest companies in New Jersey 2,569
- The largest companies in Virginia 2,503
- The largest companies in Michigan 2,346
- The largest companies in North Carolina 2,174
- The largest companies in Alabama 1,806
- The largest companies in Washington State 1,785
- The largest companies in Colorado 1,774
- The largest companies in Minnesota 1,700
- The largest companies in Maryland 1,527
- The largest companies in Wisconsin 1,482
- The largest companies in New York 6,920
- The largest companies in San Francisco 2,030
- The largest companies in Houston 1,791
- The largest companies in Chicago 1,668