| # | Company | Employees |
|---|---|---|
| 1 |
Henry Scheinhenryschein.com
Provides products, services, and technology platforms for healthcare customers globally, supporting operational success and clinical outcomes for practitioners and various healthcare sites. |
10,523 |
| 2 |
Canon USAusa.canon.com
A company uniting employees in contributing to humanity's prosperity and environmental protection through digital imaging solutions and commitment to the common good |
9,585 |
| 3 |
Verintverint.com
The company helps brands build lasting customer relationships by connecting work, data, and experiences to deliver differentiated experiences at scale |
4,354 |
| 4 |
ADI Global Distributionadiglobal.com
Global distributor of security, audiovisual, and smart living solutions, offering a vast product portfolio, end-to-end support, and flexible purchasing options for professionals. |
2,754 |
| 5 |
Levitonleviton.com
A global leader in electrical devices, lighting solutions, networking, security, home automation, and data infrastructure products for residential, commercial, and industrial needs |
2,593 |
| 6 |
Professional Physical Therapyprofessionalpt.com
Specializing in physical therapy, Professional offers customized recovery plans at multiple state-of-the-art facilities and supports athletes with elite performance programs and education |
1,883 |
| 7 |
CSC ServiceWorkscscsw.com
Provider of commercial laundry and air vending solutions serving residential, hospitality, education, and convenience environments across multiple countries. |
1,599 |
| 8 |
GPI / Greenman-Pedersen, Inc.gpinet.com
A leading engineering consulting firm specializing in transportation infrastructure and building projects, providing comprehensive design, planning, and construction services |
1,429 |
| 9 |
Marchon Eyewearmarchon.com
Manufactures and distributes high-quality eyewear and sunglasses globally under prestigious brands, serving over 80,000 accounts in 100+ countries. |
1,402 |
| 10 |
Certified Groupcertifiedgroup.com
Family of laboratory and consulting companies offering expert testing, consulting, and auditing services for various industries across North America |
1,359 |
| 11 |
Newsday Media Groupnewsday.com
A dynamic media organization serving Long Island and NYC with mobile, digital, print, and event products, focused on engaging communities |
1,245 |
| 12 |
H2M architects + engineersh2m.com
A multi-disciplinary consulting and design firm providing architecture, engineering, environmental services, and more with offices in New York and New Jersey |
686 |
| 13 |
Cadexcadexsolutions.com
Simplifying the order-to-cash process by providing solutions to manage every payment and streamline complex interactions in business transactions |
628 |
| 14 |
SupplyHousesupplyhouse.com
A leading online distributor of plumbing, heating, and HVAC supplies, fostering a dynamic culture focused on innovation, teamwork, respect, and generosity |
575 |
| 15 |
Uncle Giuseppe's Marketplaceuncleg.com
A gourmet marketplace offering homemade pastas, sauces, sushi, fresh seafood, imported Italian specialties, full-service catering, gift cards, and gift baskets Quality ingredients and traditional recipes |
556 |
| 16 |
Nikon Microscope Solutionsmicroscope.healthcare.nikon.com
Provides biological microscopy products, services, and advanced imaging technologies for life science, biotech/pharma, and clinical laboratory markets. Specializes in confocal and super-resolution microscopy. |
531 |
| 17 |
Accommodations Plus Internationalapiglobalsolutions.com
provides global crew accommodation solutions using proprietary technology and software, supporting over 20,000 airline crew members worldwide daily |
525 |
| 18 |
Hart Agencyhartagencyny.com
A promotional marketing agency based in NYC, LI, and upstate NY, providing customized solutions to build brand awareness, sales, and buzz |
398 |
| 19 |
United Mortgage Corp.unitedmortgage.com
A mortgage company offering diverse loan programs and strong banking partnerships for loan officers to thrive and grow their business |
373 |
| 20 |
Haugland Group LLChauglandgroup.us
Infrastructure construction company with expertise in energy and civil projects, offering services in engineering, design/build, project management, and project finance since 1999 |
363 |
| 21 |
NMBnmbnow.com
Mortgage company focused on making the home buying process stress-free by educating clients, providing expert advice, and offering various financing options |
355 |
| 22 |
US Mortgage Corporationusmortgage.com
Mortgage lender specializing in educating first-time buyers, refinancing, reverse mortgages, offering competitive rates, customized loans, and superior customer service through advanced technology. |
340 |
| 23 |
The Sage Groupthesagegroup.com
Provides staffing and consulting services in marketing, technology, and business operations with a community for marketing leaders and outsourced projects. |
324 |
| 24 |
Echelon Paymentsechelonpayments.com
A leading company in the payments industry, offering partners financial autonomy, legal portfolio ownership, cutting-edge technology, and support for building life-changing portfolios |
322 |
| 25 |
Chyronchyron.com
A pioneer in broadcast titling and graphics systems, the company offers innovative solutions for designing, sharing, and playing live graphics seamlessly |
317 |
| 26 |
Certified Laboratories, Inc.certified-laboratories.com
A leading food industry laboratory offering full service quality testing services across various sectors with expertise in microbiology and FDA nutritional labeling |
313 |
| 27 | 297 | |
| 28 |
Air Techniquesworkforcenow.adp.com
Innovates and manufactures reliable dental equipment since 1962. Products offer exceptional performance, efficiency, and require little maintenance, providing great value in the industry. |
251 |
| 29 |
Lloydlloydstaffing.com
Specializing in talent acquisition since 1971, we provide strategic placements in Accounting & Finance, Healthcare, IT, Life Sciences, and Marketing/Medcomms/Creative Book a consultation today! |
238 |
| 30 |
Gilbertgilbertexperience.com
With over 30 years of experience, we design and create environments for trade show exhibits, retail interiors, millwork, and events, offering turnkey solutions |
219 |
| 31 |
ConnectOne Bank (formerly First National Bank LI庐)connectonebank.com
Local bank founded in 1927 offering lending, deposit, investment, and digital products with a focus on delivering extraordinary service to businesses and consumers |
203 |
| 32 |
East Coast Capitaleastcoastcap.com
Residential financing company offering a variety of loan products to help homebuyers and homeowners achieve their financial goals Hiring experienced Branch Managers & Loan Officers |
190 |
| 33 |
Sunrise Credit Services, Inc.sunrisecreditservices.com
Provider of credit and collection services for credit grantors nationwide, focusing on quality client service, controlled growth, technology, and understanding of the credit process |
177 |
| 34 |
AIP Publishingpublishing.aip.org
AIP Publishing provides research journals, conference proceedings, and essential information for physical scientists globally for over 80 years |
170 |
| 35 |
Allied Physicians Groupalliedphysiciansgroup.com
A partnership of over 150 physicians and 350 support staff dedicated to providing exceptional patient care through innovation, support, and collaboration |
167 |
| 36 |
E&I Cooperative Serviceseandi.org
Member-owned cooperative providing competitively solicited contracts and sourcing solutions to optimize procurement and spending for educational institutions. |
151 |
| 37 |
Food Authorityfoodauthority.com
A dedicated team since 1977, providing top-notch products and services, with three facilities in New York, Maryland, and Massachusetts |
151 |
| 38 |
Big Think Capitalbigthinkcapital.com
This company is a financial service marketplace offering various capital options to help businesses secure the best financing terms |
147 |
| 39 |
ETRMServicesetrmservices.com
A trusted IT partner specializing in Energy Trading and Risk Management services, offering customized solutions for clients globally through a team of experts |
115 |
| 40 |
EGC Groupegcgroup.com
A customer-centric marketing agency specializing in digital strategies to drive brand engagement, loyalty, and sales on a global scale |
106 |
| 41 |
AssuredPartners Northeast, LLC.assuredpartnersne.com
Independent insurance advisory firm offering comprehensive and competitive insurance programs, risk analysis, and loss control services to businesses and individuals nationwide and internationally |
86 |
| 42 |
Spectronics Corporationspectroline.com
Global leader in fluorescent leak detection technology solutions since 1955 Specializing in dyes, additives, and UV lamps for various industries worldwide with a focus on customer satisfaction |
84 |
| 43 |
Engage Partners Inc.engagestaff.com
Offers full-service staffing and AI consulting, connecting employees with businesses. Provides direct hire, temporary placement, executive search, and AI-driven talent analytics across various sectors. |
79 |
| 44 |
Bradley & Parkerbradley-parker.com
A premier insurance, risk management, and financial services firm with a long-standing history of excellence, dedicated to providing optimal coverage and protection for clients |
73 |
| 45 |
NIC Components Corp.niccomp.com
A leading supplier of surface mount and leaded electronic components, offering over 180 product series to OEMs in over fifty countries |
68 |
| 46 |
FNA Insurance Services, Inc.fnainsurance.com
A full-service general agent and employee benefit consultant providing comprehensive insurance consulting, compliance, and administrative services to a network of retail agents |
50 |
| 47 |
Herold & Lantern Investmentsheroldlantern.com
A national financial services firm offering personalized guidance and education to help clients achieve their financial goals through smart technology and investment strategies |
39 |
| 48 |
NAI Long Island & NAI Queensnailongisland.com
A full-service commercial real estate organization providing sales, leasing, tenant/landlord representation, property management, and consulting services since 1980 Proud NAI Global representative |
36 |
| 49 |
GdB Geospatial - A SAM Companygdbgeospatial.com
A leading geospatial services provider for A/E/C professionals, government agencies, and the general public, recognized for expertise and growth |
35 |
| 50 |
CosmoCom (An Enghouse Interactive Company)cosmocom.com
An innovative cloud contact center solution provider empowering businesses to unify customer interactions across various channels and locations worldwide |
33 |
| 51 |
Lighthouse Financial Network, LLClfnllc.com
A national network of independent firms providing wealth management services with a focus on building relationships based on trust |
31 |
| 52 |
Canon BioMedicalcanon-biomedical.com
The company focuses on developing, manufacturing, and marketing innovative technologies for biomedical research and healthcare, aiming to advance science and improve health |
30 |
| 53 |
CIVLcivlapp.com
A platform for managing members, recruiting new ones, and increasing engagement for organizations, groups, charities, and campaigns |
28 |
| 54 |
Marco Polo International, LLCmar-pol.com
A global distributor of plastic resins, specializing in commodity and engineered materials, sustainable solutions, and innovative logistics with rapid growth |
23 |
| 55 |
Direct Response Group, LLCdirectresponsegroup.com
This company offers SEO services, PPC advertising, and social media consulting to help businesses generate revenue and value through online marketing strategies |
22 |
| 56 |
SHRM-LI Society for Human Resource Management, Long Islandshrm-li.clubexpress.com
A non-profit chapter providing HR professionals on Long Island with education, networking, and ethical standards to enhance their expertise and profession |
21 |
| 57 |
Point Wealth Managementpointwealth.com
A values-driven wealth management firm committed to providing unparalleled service, integrity, and disciplined financial strategies to help clients achieve their goals |
20 |
| 58 |
United Public Adjusters & Appraisers, Inc.unitedpublicadjusters.com
Company provides expert public adjusting services for property damage claims, specializing in preparing, filing, negotiating, and managing insurance claims for policyholders |
18 |
| 59 |
StayMarquisstaymarquis.com
A premier vacation rental company managing luxury properties in various markets, offering stress-free rental experiences for owners and exceptional hospitality for guests |
17 |
| 60 |
APS Pension and Financial Servicesapspension.com
Leading financial group specializing in retirement planning, portfolio management, estate planning, and insurance benefits with expertise in investments, family business preservation, and asset protection |
16 |
| 61 |
Atlantic Property Services, LLCatlanticproperty.com
A boutique firm in NY Metro area offering real estate solutions since 1995 for commercial and industrial properties through successful transactions |
11 |
| 62 |
Kosakoff & Cataldo LLPkcllp.net
A law firm in Melville, NY providing litigation and legal services, specializing in commercial, construction, and professional liability defense cases Also offers transactional services |
11 |
| 63 |
IT & EBusiness Consulting Services, Inc.itecsus.com
Offering IT services combining staff augmentation and project-based professional services to meet clients' technology needs efficiently and cost-effectively using global Solution Centers |
11 |
| 64 |
Keen-Summit Capital Partners LLCkeen-summit.com
Keen-Summit Capital Partners specializes in real estate and business strategies to maximize value, minimize liabilities, and assist clients across North America |
9 |
| 65 |
Robert C. Bill Associates, Inc.rbarisk.com
Full-service insurance broker specializing in property and casualty coverage for the construction industry, representing clients with integrity and striving for excellence |
9 |
| 66 |
Accurate Inventory & Salvage Corp.weareaccurate.com
Specializing in listing and valuing personal and business property for insurance claims across the United States, with a focus on efficient, cost-effective solutions |
6 |
| 67 |
Fass & D'Agostino, P.C.fdnylawfirm.com
A law firm providing personalized legal representation for personal injury, medical malpractice, products liability, real estate transactions, and criminal law cases |
5 |
| 68 |
Mannino Realty Group, LLCmanninorealty.com
Prestigious property management firm in NY Metro Area specializing in residential, commercial, and mixed-use properties, focusing on client and tenant satisfaction |
1 |
Turn this list into pipeline
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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